Help, Jd 410 backhoe won't move fast

   / Help, Jd 410 backhoe won't move fast #1  

jdm0125

Member
Joined
May 23, 2011
Messages
42
Location
North Carolina
Tractor
Ford 3000
Hey everyone I got a new project which is a straight JD 410 backhoe. Completely rebuild the entire motor 4cyl diesel. But the mot back in and now she doesn't want to move. She will go into all gears (1-8) and slightly "jerks" like it wants to move but doesn't. I have to put the pedal to the metal before it will start inching forward or backward regardless of the gear. Changed fluids, return filter trans filter and trans screen. Have 162 psi at reverser (with semi warm fluid). Checked linkage into reveres from clutch. Had wife on machine and I used vise grips on link bar to turn. It is going all the way back. I am stuck on this one. The book says it is not susposed to go into reverse in high gear but it does. Book also says when shifting in high gear from stop it should stall in 5 sec which it does not do that either.

I got a steal on this hoe but could not use it when I got it due to motor. Any ideas before I break this thing in half again?
 
   / Help, Jd 410 backhoe won't move fast
  • Thread Starter
#2  
I also checked the pressure release spring in reverser. I don't think it's the trans pump because hydrolic are working great so I'm getting fluid to hydrolic pump and breaks and steering are good
 
   / Help, Jd 410 backhoe won't move fast #3  
Does it have 160#s in forward? Maybe disconnect clutch(parts key 4) is slipping.
 

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   / Help, Jd 410 backhoe won't move fast
  • Thread Starter
#4  
Yes there is very little pressure change when switching from forward to reverse and neutral it's been a few days since I did test but I had pressure I do know I had 160# on reverser tap port on bottom rear of reverser

Update

I did the pressure test again had 162 # at idol in neutral when I switch to forward and reverse with tires up in air pressure drops all the way down and jumps right back up to 162#. When I put tires on the ground pressure drops to 75# when switching to forward or reverse and slowly drops to 10-20 lbs. when I go full throttle with tires on the ground the pressure then jumps back up to about 160 and tractor slowly tries to creep forward. I checked pressure gauge and noticed it was seeping fluid so I went to snug it up a little more and it stripped out. Now I need to buy another cover.

Any ideas while I'm waiting on cover?
 
Last edited:
   / Help, Jd 410 backhoe won't move fast
  • Thread Starter
#5  
So if clutch is slipping and I disconnect linkage then it will move at low rpm if that's the problem?

I did put a brand new clutch and pressure plate and throw out bearing when I put motor in
 
   / Help, Jd 410 backhoe won't move fast
  • Thread Starter
#6  
Ok so I justed pressure in gear to reverser and I'm peaking out at 75# then slow drops in forward and reverse
 
   / Help, Jd 410 backhoe won't move fast #7  
There are two test ports on top of the clutch control valve. Those will give pressures to fwd and reverse individually. Give those a test and report back. There are a few known issues w that machine but start with the top test ports.
 
   / Help, Jd 410 backhoe won't move fast
  • Thread Starter
#8  
Thanks Cpjlube I will do that. JD is closed today but planning on ordering new reverser cover tomorrow
 
   / Help, Jd 410 backhoe won't move fast #9  
Remember it's just a test port. Unless the housing is broken, you could retap to another size and just plug it up. Just a suggestion. It's not a critical part. Just needs to seal. It's 3/8 -24 I think? Just tap it for course thread and oring the top of the bolt. If it tightens, that's all you need. At least then you could continue with tests. Depending on outcome, reverser might be coming out anyway.........
 
   / Help, Jd 410 backhoe won't move fast
  • Thread Starter
#10  
Cpjlube
I did try and retap but it was still seeping fluid. New cover will be here tomorrow morning (wed) so I will have the results from test tomorrow evening. After work. Is there anything else I should check tomorrow?
 

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