Rc4wd 870k wheel loader unboxing and review.

[liftmys10]

https://youtu.be/EBi2B8o7gTs
All the previous unboxing videos I've seen on youtube came with a nice wooden box. Wanted to show how the recently shipped boxes come now. Also notice the front bucket ram PIN is installed where as before you would need to put that on yourself.
Now the new foam box is very well packed as you can see in the video.
My initial reaction was, wow this is heavy, especially the rear end. That's probably why it has so much lifting power.
There is no sound module card (that's expected from rc4wd) but there is a speaker installed already with wires coming out from it.  So installing a card should be a piece of cake.

It looks very well built.  They revised the colors. The rear radiator grill and engine handle bars are now Gray instead of yellow. I think that really changed the way the machine looks.

I already filled it up with oil and started her up. The pump noise is much louder than my pc700 and cat740. The valve control is not that precise compared to my pc700 equipped with Premacon valves.

It's hard to describe but when you move the stick very slightly, the rams don't move and I can hear the pump noise struggling so slightly. If you move the stick a little more, the cylinders start to move but not at the expected slow speed you want. This is the same for all 3 valves. Full disclosure, I am running mobil dte24 (ISO 32) and when I asked around including Mr Tang from eagle, he said it will be ok as long as it's not too cold outside. I live in Los Angeles so I think I should be fine with that. Here is a video of the valve control. https://youtu.be/eyyLs9oaXl8
(Update to the above issue, I unscrewed the pressure relief valve maybe half a turn and that solved the issue above)

Now comparing to my pc700 or cat740, the stick movements reflect 100% on the cylinders movement as one would expect.
This review was based on 10minutes of run time. So I will edit as more running time goes on.

[bigpipespete]

I like the grill painted gray, now you need to get some puppet drivers for your machines. When you find some let me know cause I could use a few.

[Northern Farmer]

I like the grill painted gray, now you need to get some puppet drivers for your machines. When you find some let me know cause I could use a few.

Check out the Walking dead figures. They make great drivers :cool:

[bigpipespete]

Check out the Walking dead figures. They make great drivers :cool:

I saw one yesterday but didn't think Michonne would look right operating a D10 :D

[Northern Farmer]

I saw one yesterday but didn't think Michonne would look right operating a D10 :D

Lol these are the two I picked up
http://i66.tinypic.com/20fp7av.jpg

[bigpipespete]

Is that the seat from rc4wd excavator ?

[Northern Farmer]

Is that the seat from rc4wd excavator ?

No this isn’t the 360L interior. I bought this interior from TTM for my 4200XL since it doesn’t come with one.

https://www.ttm-shop.de/ttm-produkte/modelle/bagger/zubehoer/bagger-inneneinrichtung-fuer-ttm-bagger

[liftmys10]

No this isn’t the 360L interior. I bought this interior from TTM for my 4200XL since it doesn’t come with one.

https://www.ttm-shop.de/ttm-produkte/modelle/bagger/zubehoer/bagger-inneneinrichtung-fuer-ttm-bagger

That looks good!!

[Northern Farmer]

That looks good!!

Thanks bud here it is installed
http://i67.tinypic.com/4vh89l.jpg

But anyhow I’m done highjacking your thread, I left you a comment about the radio tuning on your video :cool:

[markturbo]

Congrats on the loader, she looks good.

[skeeter]

Northern Farmer, that cab interior looks awesome!

[bigpipespete]

He looks in scale with that machine, I will try and track one down after Christmas.

[jack van]

i got 2 drivers from rcb min i think 1/14 scale

[skeeter]

Thanks bud here it is installed
http://i67.tinypic.com/4vh89l.jpg

But anyhow I’m done highjacking your thread, I left you a comment about the radio tuning on your video :cool:

That bucket looks different than the stock bucket that came with mine. Where did you source it from?

[Northern Farmer]

It’s the RC4WD Siberian bucket powdercoated black with custom machined steel teeth instead of the aluminum teeth that come with it. There’s also a quick coupler on there. Check out my company Tremblay Excavation for more info :cool:

http://rctruckandconstruction.com/showthread.php?t=11012&page=3

[liftmys10]

I made 2 videos today. One showing how I setup my radio and the other mimic practicing loading/dumping dirt.
One thing I don't mention in the video is I moved all the fwd/rev and steering on the right stick. The boom and bucket is on the left stick.
The room is small so the pump noise is a lot louder than what it would sound outdoors.
https://youtu.be/3iA42F_aj68
https://youtu.be/YO8kvgzzAs8

[skeeter]

Northern Farmer, TYVM for the info

[skeeter]

WOW! That thang has a LOT of reach! How tall is that paper bag?

[bigpipespete]

Sure doesn't take you long to operate your machines in a realistic manner. Cant wait to see it outside.

[Northern Farmer]

I made 2 videos today. One showing how I setup my radio and the other mimic practicing loading/dumping dirt.
One thing I don't mention in the video is I moved all the fwd/rev and steering on the right stick. The boom and bucket is on the left stick.
The room is small so the pump noise is a lot louder than what it would sound outdoors.
https://youtu.be/3iA42F_aj68
https://youtu.be/YO8kvgzzAs8

Great job Shawn! Thanks for demo. I’m sure it’s going to help out a lot of owners to see how you tuned your loader :cool:

Brandon

[liftmys10]

Sure doesn't take you long to operate your machines in a realistic manner. Cant wait to see it outside.
Thanks Mike. It sure wasn't like this with the default settings from factory. I was barely able to control it.
JD customs has built a good machine, but the radio settings and some of the mechanical settings like the pressure relief valve were questionable. Once these were massaged, it was much more predictable and controllable. I prefer having all the drive sticks on the right side (similar to how a plane flys) and the bucket and arm left stick.
I will add to this that the pump motor, speed control and servos work much cooler now. You can touch the pump motor with your finger for as long as you want after running it for half an hour. Now I know why they took the rear fan out. Plus it makes room for the Lipo.
Surprisingly the electronics run very efficient. Only the drive esc and motor will get warm if you use it in 2nd gear which is expected and totally normal.

Great job Shawn! Thanks for demo. I’m sure it’s going to help out a lot of owners to see how you tuned your loader :cool:

Thanks Brandon. I'm pretty sure if I kept the default settings, parts would start to fail.

[liftmys10]

WOW! That thang has a LOT of reach! How tall is that paper bag?
Standard grocery bag is just over 17".
Max reach to the bucket pivot point according to rc4wd is 18"
I did some rough dimensions comparing to the dimensions of full size cat 980h (pretty much the same as liugong clg888) and the result is 870k is much closer to 1:12 scale. Not 1:14 as advertised. :cop:

[Northern Farmer]

Standard grocery bag is just over 17".
Max reach to the bucket pivot point according to rc4wd is 18"
I did some rough dimensions comparing to the dimensions of full size cat 980h (pretty much the same as liugong clg888) and the result is 870k is much closer to 1:12 scale. Not 1:14 as advertised. :cop:

I’m not surprised as when you see the 870K next to other loaders that are 1/14 it’s all together a bigger machine. Gotta love that extra reach though :cool:

[liftmys10]

I put her in the dirt. I get better operating on the 2nd video. Surprisingly the Lipo lasted approx 35min each and I stopped it at 11.5v Very efficient. Used 5800mah lipo.
1st time in dirt: https://youtu.be/I0XeHrY7c_s
2nd time in dirt: https://youtu.be/SaeX06onUxY

[Northern Farmer]

Awesome videos Shawn :cool:

[bigpipespete]

Once again your video quality is awesome , are you going to get some decals made up for the 870K ?

[liftmys10]

Once again your video quality is awesome , are you going to get some decals made up for the 870K ?
Thanks all.
I'm debating on what model to make it. It already has CASE colors so maybe a 1221F?
But just recently i saw someone who made a whole new engine hood and converted to CAT 980. It looked great! Here is a link to the video: https://www.youtube.com/watch?v=EVfm7Jk3tIA&index=1&list=FLR_DbdkND2V87JesLCevhOg

[Northern Farmer]

Thanks all.
I'm debating on what model to make it. It already has CASE colors so maybe a 1221F?
But just recently i saw someone who made a whole new engine hood and converted to CAT 980. It looked great! Here is a link to the video: https://www.youtube.com/watch?v=EVfm7Jk3tIA&index=1&list=FLR_DbdkND2V87JesLCevhOg

I agree, the guy did an awesome job converting his loader :cool:

[bigpipespete]

This is your opportunity to have the first Case loader out there.

[lenny]

The 1121G with the grey wheels is a slick looking ride and different then most. Thinking I'm going to make a new engine cover. Eliminate the gray crossover under the hood, fix the air cleaner and ext to the hood and gain much more Batt space.

[jack van]

so i went and got 4 zippy5800 mah lipo battery seems they have different type of connectors than the 870 loader is there a set of adapters from bullet con to the connecters for the zippy batteries

[skeeter]

Yes, search evilbay, they have several kinds/styles. Or you can take it to your LHS & have them solder on new ends fir you, or do them yourself

[liftmys10]

Just installed Beier USM-RC-2 sound/light card. I'm using default settings with a prerecorded liebherr L586.
Haven't fine tuned it yet. I have to reverse the back up beeper noise. The software has a learning curve.
https://youtu.be/c7EtgRxznL4

[Northern Farmer]

Just installed Beier USM-RC-2 sound/light card. I'm using default settings with a prerecorded liebherr L586.
Haven't fine tuned it yet. I have to reverse the back up beeper noise. The software has a learning curve.
https://youtu.be/c7EtgRxznL4

Can’t beat that sound unit! Has lots of potential. You must have seen these videos before

https://youtu.be/0IR4jyELMO0
https://m.youtube.com/watch?v=1OWF9nibiD0

[liftmys10]

Can’t beat that sound unit! Has lots of potential. You must have seen these videos before

https://youtu.be/0IR4jyELMO0
https://m.youtube.com/watch?v=1OWF9nibiD0

The pump is so loud on the first video. I've seen the 2nd video before. Thanks!
So after messing with mine, I finally decided on this sound. It sounds throatier in person compared to the video.
https://youtu.be/k1f48dYiKKg

[liftmys10]

Adjusted the turbo noise. It was too loud before. Now it sounds better. https://youtu.be/SYTcsaYZOOQ

[jack van]

so my 870 loader is a 50 lbs piece of crap rc4wd is crap

[skeeter]

so my 870 loader is a 50 lbs piece of crap rc4wd is crap

Details please, & thanks.

[jack van]

problem is i do not think i can take that much of the machine apart and get it back together again lol i am sure it is the wire from hydro pump it is only thing not turning on and mortor for wheels do not move

[skeeter]

PM sent

[Northern Farmer]

problem is i do not think i can take that much of the machine apart and get it back together again lol i am sure it is the wire from hydro pump it is only thing not turning on and mortor for wheels do not move

Odd, didn’t you just receive the loader a couple weeks ago ? Wasn’t working when you got it ? Repairs should still be covered by the warranty.

[TheBennyB]

Just ordered an 870 from Tang, Hope he can send it off before Chinese new years. I've been going over this thread again and appreciate everything posted to look out for and troubleshooting if need be.

[lenny]

Nice move Benny your going to love the 870k. With just over a year of run time on mine that machine still surprises me with how strong she is. Congrats again

[liftmys10]

Jack van, did you figure it out with your 870k? Can you describe in more detail the issues and when it started acting up? Supposedly it's checked twice before shipping them off.

[TheBennyB]

Nice move Benny your going to love the 870k. With just over a year of run time on mine that machine still surprises me with how strong she is. Congrats again

Good to hear Lenny. Had a Magom bruder loader and it was just a bit small to go with my other piece's. Loved it and it is a little beast with no problems, just time to go bigger.

[jack van]

Odd, didn’t you just receive the loader a couple weeks ago ? Wasn’t working when you got it ? Repairs should still be covered by the warranty.

yes i got around dec 20 but was trying to get the custom battery as of last check still out of stock i had ordered 2 battery before machine soon as i order machine 2 days later baterry order canceled now i am doing email tag with rc4wd for 3 days up to 35 email so far with a little progress but not much not to happy you think they would keep 1 battery for every machine at least

[jack van]

i am supposed to get an email with a vid to hepl me fix it but so far nothing not holding my breath.I told them i have the box to send the piece of crap back and they give money back but they want me to jump through some hoops alittle longer i think rc4wd keeps this up they might be next to go under with stuff like this happening

[skeeter]

i am supposed to get an email with a vid to hepl me fix it but so far nothing not holding my breath.I told them i have the box to send the piece of crap back and they give money back but they want me to jump through some hoops alittle longer i think rc4wd keeps this up they might be next to go under with stuff like this happening

I requested video of the repairs they said I needed ot make to the 4200. I actually received the part (It came on a SLOW boat) 2 weeks before I got the video in my inbox. I hope that you get your video faster then I did mine.

[jack van]

i ended up getting tireed of waiting on battery got 4 4 zippy 5800 battery recommend from this site and had the thing run on battery going back and forth but no hydro work so now itis a 4700 canadian static model that pisses me off everytime i look at it

[jack van]

hehe i told them all i want to do is take a sledge hammer to it will see but as far as i see i will def think twice before i recomend rc4wd to anyone

[Northern Farmer]

i ended up getting tireed of waiting on battery got 4 4 zippy 5800 battery recommend from this site and had the thing run on battery going back and forth but no hydro work so now itis a 4700 canadian static model that pisses me off everytime i look at it

I understand your frustration, it’s only understandable. Eagle Machinery’s customer service is quite good, I doubt very much they will leave you hanging. How come you said the motor for the wheels isn’t working if the loader goes forward and back ? Have you checked the wires for the pump’s esc ? Maybe there’s a loose wire.

[jack van]

the hydrolic motor does not work but motor for wheels does.there is no hydralic at all but machine moves forward and backwards but does not turn and bucket does not move.I should in no way have to take machine totaly apart after i pay almost 5000 canadian to get a ready to run machine ?you might think it is a deal but i dont

[jack van]

to bad the customer service does not start when they build it hehe rc4wd will see what happens to me so far only they can prove if there worth anything all i can say now is those of you that can get anything good from the are LUCKY and i bet alot of those supposed rtr machines had alot of work done by the customer just so they can use it we should do a poll how many orders of machines from rc4wd work perfect right out of the box with no work

[TheBennyB]

Any idea what % the pump motor is running at on your TX? Just wondering if somehow it got turned to 0 before shipment? Also for eliminating variables you could plug the pump esc into the channel for fwd/back just to see if the pump comes on when you hit that stick. Yea, very frustrating for sure. I kinda put myself in a mind set to begin with that these are entry level machines assembled and tested by 12yr olds.

[TheBennyB]

to bad the customer service does not start when they build it hehe rc4wd will see what happens to me so far only they can prove if there worth anything all i can say now is those of you that can get anything good from the are LUCKY and i bet alot of those supposed rtr machines had alot of work done by the customer just so they can use it we should do a poll how many orders of machines from rc4wd work perfect right out of the box with no work

I doubt many. Sorry to hear you've had such a time with it. Eagle stuff is entry level and do take a bit to iron out but nothing like the experience your having. Hoping we can still help you figure out something and get you moving material.

[jack van]

can not blame a chilld it is the teachers fault lol

[TheBennyB]

BIG note on the testing on the fwd/rev channel, Just do a quick check. The motor may spin a way to suck fluid into your tank and not the block so be johnny on the spot about unplugging it from the RX. This is just a test to see if the pump motor physically works.

[TheBennyB]

can not blame a chilld it is the teachers fault lol

Teacher? You mean the dude telling him this is what he does to get his portion of food for the day?

[Northern Farmer]

the hydrolic motor does not work but motor for wheels does.there is no hydralic at all but machine moves forward and backwards but does not turn and bucket does not move.I should in no way have to take machine totaly apart after i pay almost 5000 canadian to get a ready to run machine ?you might think it is a deal but i dont

Not quite sure what you were expecting when you bought the loader. Construction models are for experienced users only, it even says it in the description. You were going have to take your model apart and work on it sooner or later, it’s the nature of this hobby. Components won’t last forever. Members are trying to help you out here, threatening the manufacturer your going to smash your model because it’s not working won’t solve a thing.

[jack van]

hmmm a model that works for one would have been nice and you have to start somewhere and well i can fix most things that i break lol and even build stuff haha just dont like paying for crap that bothers the s**t out of me should have just order it in kit form for alot less ?

[scottyk]

You actually cannot get it in any form other than RTR, I have tried with Tang and no luck. Also you could have bought a Lesu loader which is the same price if not more by the time your done, in kit form, not even painted or anything. but hey if anyone wants to unload their junk loader let me know! I wouldnt mind picking one up

[liftmys10]

i bet alot of those supposed rtr machines had alot of work done by the customer just so they can use it we should do a poll how many orders of machines from rc4wd work perfect right out of the box with no work
Mine worked right out of the box and I got mine same time as you did. I made some slight changes to my radio to fit my preferences and made a video on YouTube on it. Other than the loose muffler tip, I would say it was near perfect out of box for me.
My only "fix" was lowering the pump speed and unscrewing the pressure relief valve to make the hydros smoother running.
Also minimize using the diff lock as it puts a lot of stress on the gears. Frank mentioned that to me as a tip and just passing that along now.

[jack van]

well so far as i can figure it there are 4 switches and none are working includeing the switch for pump hehe funny thing they sent me 2 videos on the radio set up haha there idea of help was he pressed every button as many times as possible with blury screen and did not say a word about what he was doing lol :mad:

[liftmys10]

well so far as i can figure it there are 4 switches and none are working includeing the switch for pump hehe funny thing they sent me 2 videos on the radio set up haha there idea of help was he pressed every button as many times as possible with blury screen and did not say a word about what he was doing lol :mad:

Ok it's time for you to make a video and post on YouTube for us to see what is going on. Show in the video step by step what you are doing. Video all the wires and how it's all connected.

[lenny]

Agreed on the video, remember shipping can be a rough ride. Hate to see the sledge come out. But I've been there before.

[jack van]

so i am happy to announce that i got the machine to runlol just long enough to blow a hydro line i believe it is on left side lol this machine is amazeing and not in good way

[liftmys10]

Super bowl morning digging with sound.
https://youtu.be/6tJ1S08B7nw

[Northern Farmer]

Super bowl morning digging with sound.
https://youtu.be/6tJ1S08B7nw

New video is sweet Shawn :cool:

[trucker n]

What engine sound is that

[TheBennyB]

so i am happy to announce that i got the machine to runlol just long enough to blow a hydro line i believe it is on left side lol this machine is amazeing and not in good way

Man, so what did you have to do to get pump motor rolling? Has the hydro line that is leaking completely off? May just need to tighten it down or take it off and check washer. Gotta make sure all the fittings are snugged down and have a washer.

[TheBennyB]

Yea, sound on that is awesome Shawn. Have you had to adjust the diff lock cable at all?
According to tracking mine just arrive in Hawaii. Phew...glad it got out before New Years.

[jack van]

yes the sound is very nice i have ordered the light set up since i have to do a total tear down on my machine to replace hydro line on left steareing hope the cylinder is ok if not they will have to send a new one of those as well

[liftmys10]

New video is sweet Shawn :cool:
Thanks!!

What engine sound is that
Volvo truck. Had to change alot of the parameters on the software.


Yea, sound on that is awesome Shawn. Have you had to adjust the diff lock cable at all?
According to tracking mine just arrive in Hawaii. Phew...glad it got out before New Years.

Thanks!! Congrats! I haven't adjusted. I checked to see if it was working properly and it was so I left it as is.
yes the sound is very nice i have ordered the light set up since i have to do a total tear down on my machine to replace hydro line on left steareing hope the cylinder is ok if not they will have to send a new one of those as well

Glad to hear you got it all sorted out for the most part.

[TheBennyB]

looked through manual and the forum but couldn't fine the size of the fluid tank on the 870K. How much fluid are people putting in on first arrival?

[jack van]

instruction says about half a tank or to bottom of the filler line is where mine is at when not leaking from broken line lol

[TheBennyB]

Ddidn’t notice a fill line. In the full tube?

[Rimrock]

One can count the tube as the fill line, say the bottom - half way up the tube.
If one need to put the machine on the side, don't forget to temporary seal off the air intake hose next to the filler tube) A suitable self tapping screw will do

[TheBennyB]

One can count the tube as the fill line, say the bottom - half way up the tube.
If one need to put the machine on the side, don't forget to temporary seal off the air intake hose next to the filler tube) A suitable self tapping screw will do


Right on, thought that was the case. Ended up taking around 40Ml to get to the bottom of the fill tube. Thanks.

[liftmys10]

Right on, thought that was the case. Ended up taking around 40Ml to get to the bottom of the fill tube. Thanks.

Check again once you cycle thru each cylinder.

[lenny]

One thing I did with mine was protect the clear line from the tank. As it enters the body section it was rubbing on somewhat of a rough edge. A little file work and a rubber slip over boot, all good. Next will be bushings for the tilt pins.

[TheBennyB]

One thing I did with mine was protect the clear line from the tank. As it enters the body section it was rubbing on somewhat of a rough edge. A little file work and a rubber slip over boot, all good. Next will be bushings for the tilt pins.

Nice catch, mine's rubbing on the one side as well. Will get a file in there and give it some room.

[Northern Farmer]

Nice catch, mine's rubbing on the one side as well. Will get a file in there and give it some room.

So far how you liking the loader ?

[TheBennyB]

So far how you liking the loader ?
Just arrived this afternoon. Only had it on the bench to change out battery connector, change some channels on the RX to my liking and start the one over on screws, fittings, and such. Drove it for functions test after changing channels and first impressions are great. 2nd gear is wicked fast, probably spend most time in 1st and locked diff 1st gears. She's a heavy girl, more than the 4200 by a bit, more in the lines of the Eagle dozer. Pump motor is noticeably louder than the dozer or 4200 even at 8% endpoint. So far I'm happy! Nice detailing and arrived without a scratch. May get in the dirt this weekend or next at the latest. Still frozen here though. Have the light kit to install at some point.

[liftmys10]

Just arrived this afternoon. Only had it on the bench to change out battery connector, change some channels on the RX to my liking and start the one over on screws, fittings, and such. Drove it for functions test after changing channels and first impressions are great. 2nd gear is wicked fast, probably spend most time in 1st and locked diff 1st gears. She's a heavy girl, more than the 4200 by a bit, more in the lines of the Eagle dozer. Pump motor is noticeably louder than the dozer or 4200 even at 8% endpoint. So far I'm happy! Nice detailing and arrived without a scratch. May get in the dirt this weekend or next at the latest. Still frozen here though. Have the light kit to install at some point.
Congrats! Gotta make some videos. What hydraulic fluid are you using? If I recall I have 5% or 6% endpoint on the pump. What was it set by default?

[TheBennyB]

I'm using the oil from RC4WD so far so good in my other machines. Right now I have mine at 8%. 6% seemed a bit slow for me. I think out of the box it was set at 60%! Good thing I checked before starting it up. Anyone have experience putting the light unit it? Know Frank has a vid or 2 but looking more for actual operation of changing the functions. If they are all cycled via the one switch, multiple inputs, etc? Also mine seems to be reversed cause i get backup lights and reverse beep sound when I get forward. I see 2 dip switches on the unit and was wondering if that could reverse anything. Rather not have to reverse the channel and reverse motor wiring but not that big a deal.

[liftmys10]

Also mine seems to be reversed cause i get backup lights and reverse beep sound when I get forward. I see 2 dip switches on the unit and was wondering if that could reverse anything. Rather not have to reverse the channel and reverse motor wiring but not that big a deal.
I had a similar experience when I installed the beier sound card. The backup beep was going on when I traveled forward. So I ended up reversing the motor wiring and changed the rev/norm setting on the radio for the esc. Problem solved.

[TheBennyB]

The RC4WD light kit has 2 dip switches. For giggles I switched both and it reversed the throttle setting just for the lights and reverse beep. Pretty cool that I didn't have to rewire the motor.

[ditchdigger]

The RC4WD light kit has 2 dip switches. For giggles I switched both and it reversed the throttle setting just for the lights and reverse beep. Pretty cool that I didn't have to rewire the motor.

Those who are knowledgeable are the ones that learn by experience. ;)

[Cat966c]

Would it be too much to ask for you to post a pic of the drive shaft and how it connects to the axles (if there’s any vertical angles in it)?

[TheBennyB]

Would it be too much to ask for you to post a pic of the drive shaft and how it connects to the axles (if there’s any vertical angles in it)?

I'll get some pics this weekend, but it's horizontal.

[jack van]

so i have a question about hydro steering on the cylincer for the maachine on left side back of cylinder hose goes on fitting and there is a brass ring to hold it together well the pressure of the pump pushes hose of as soon as i turn is there a trick to this i do not know of lol.oh on my radio the factory settingwas at 100% on all in theend points excep ch 5 wich was 100% and 15% and ch 2 was 95% and 120% and ch 7 80% and 80% lol

[jack van]

i put my hydro pump ch 5 at 10% on both now hope that stop pushing line off

[Cat966c]

I'll get some pics this weekend, but it's horizontal.

Cool, thanks man. What do you all mean about the pump and it going too hard? I thought the esc controlled that? Or do I need to control the speed through a switch on the transmitter and how do I do that if so?

[Rimrock]

so i have a question about hydro steering on the cylincer for the maachine on left side back of cylinder hose goes on fitting and there is a brass ring to hold it together well the pressure of the pump pushes hose of as soon as i turn is there a trick to this i do not know of lol.oh on my radio the factory settingwas at 100% on all in theend points excep ch 5 wich was 100% and 15% and ch 2 was 95% and 120% and ch 7 80% and 80% lol

Sometimes helps to cut off a bit of the hose, say 1/8" lenght, press it back on the fitting, hope for a tighter fit. Otherwise, some kind of clue maybe)

[liftmys10]

Remember that lowering the pump speed does not necessarily lower the pressure. In order to lower the pressure, you need to unscrew the pressure relief valve very slightly. Unfortunately the 870k does not come with a pressure gauge. So what I did was held the bucket down and try to lift my hand. Again keep in mind you'll be digging dirt and it does not weigh 70lbs (max lifting power) so lower the pressure relief valve to a point where you think that's plenty to carve into a dirt pile. Hope this makes sense. This will also prevent hoses from blowing off the nipples, lowers hydro temperature and wear. We aren't in a competition for heavy lifting. I actually lowered mine so much that it struggles sometimes when I'm trying to pull out a boulder. It makes it look and feel real. Just another tip, try to avoid extending and retracting the cylinders to the maximum travel. That way the pressure does not hit the hoses.

[TheBennyB]

Remember that lowering the pump speed does not necessarily lower the pressure. In order to lower the pressure, you need to unscrew the pressure relief valve very slightly. Unfortunately the 870k does not come with a pressure gauge. So what I did was held the bucket down and try to lift my hand. Again keep in mind you'll be digging dirt and it does not weigh 70lbs (max lifting power) so lower the pressure relief valve to a point where you think that's plenty to carve into a dirt pile. Hope this makes sense. This will also prevent hoses from blowing off the nipples, lowers hydro temperature and wear. We aren't in a competition for heavy lifting. I actually lowered mine so much that it struggles sometimes when I'm trying to pull out a boulder. It makes it look and feel real. Just another tip, try to avoid extending and retracting the cylinders to the maximum travel. That way the pressure does not hit the hoses.

Yes, adjusting pump motor speed is going effect flow, not pressure so much. When you are talking about a pressure relief valve, are you talking about the small screw on the fixture that holds the black relief tube off the fluid tank? Mine seems to either have to be tighten down or just spins pretty freely. Doesn't really seem to want to hold a position.

[jack van]

it is a crappy product thats all i can say DO NOT BUY ONE

[TheBennyB]

I wouldn't go that far. I've only read a few cases of people having issues out of the box and for the most part they were corrected pretty quickly. Unfortunately sounds like you may received one that my have been overlooked at QC before it shipped out. I've had this happen to me on my Eagle Mach 4200. RC4WD was quick to send replacement parts and I had it operating smoothly pretty quickly. Since then I go directly to Tang at Eagle Mach and have had no problems with the Dozer and 870K I ordered from him.

[jack van]

nothing but crap and they never checked anything out not even once and i have to wait another month for parts such good service for what you pay for crap

[TheBennyB]

nothing but crap and they never checked anything out not even once and i have to wait another month for parts such good service for what you pay for crap

Everything is good but one fitting right? Once you get that fitting settled you'll be good to go?

[jack van]

hope so

[liftmys10]

When you are talking about a pressure relief valve, are you talking about the small screw on the fixture that holds the black relief tube off the fluid tank? Mine seems to either have to be tighten down or just spins pretty freely. Doesn't really seem to want to hold a position.
No, what you're describing is the air vent tube.
What I'm talking about looks like this and it is located above the left steering cylinder. You can see from underneath the machine looking up towards the cabin. https://store.rc4wd.com/Pressure-Relief-Valve-for-Earth-Digger_p_2114.html

[TheBennyB]

No, what you're describing is the air vent tube.
What I'm talking about looks like this and it is located above the left steering cylinder. You can see from underneath the machine looking up towards the cabin. https://store.rc4wd.com/Pressure-Relief-Valve-for-Earth-Digger_p_2114.html

Ahh yes. That's the pressure regulator not a relief valve right? On my other Eagle machines you have the pressure regulator and an actual relief valve with a needle screw that is adjusted to let pressure out if needed.

https://store.rc4wd.com/Ventilation-Sealing-Unit-for-Hydraulic-Oil-Tank_p_1823.html

[liftmys10]

New video.
https://youtu.be/Ng2dQPOM3rk

[Cat966c]

Do I have to have a pressure release valve? Is it absolutely necessary? My loader is going to run the small m3 magom pump

[jack van]

wow yours is still working your lucky haha

[Rimrock]

Do I have to have a pressure release valve? Is it absolutely necessary? My loader is going to run the small m3 magom pump

Yes. Concerning the small Magom pump, the pressure release valve is placed in the same block as the pump

[liftmys10]

wow yours is still working your lucky haha
Like a champ. Not a single issue yet. And you can see in the youtube video, how I use it. It's really moving dirt.
I also have another video on the same day which was 25min long. I purposely put the shorter one on YouTube.

[Cat966c]

Yes. Concerning the small Magom pump, the pressure release valve is placed in the same block as the pump

So it’s already built in??

[TheBennyB]

Like a champ. Not a single issue yet. And you can see in the youtube video, how I use it. It's really moving dirt.
I also have another video on the same day which was 25min long. I purposely put the shorter one on YouTube.

Nice vid, looks like your moving some good amounts of material! Mine is also still running great.

[TheBennyB]

wow yours is still working your lucky haha

What you going on now Van?

[jack van]

so has anybody have recomendation for cheap hydrolic oil

[Bo Wallen]

Do NOT use cheap hydraulic oil, Use high-quality oil, and keep it clean. The amount you will use does not break any bank.