Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Crawlers, Dozers, Loaders & Backhoes Discussion Forum

jdemaris-cannonball -others JD 410 TLB

Welcome Guest, Log in or Register
Author 
LENRAY

05-19-2004 17:11:25




Report to Moderator

I have a 1977 JD 410 backhoe that I use for my own use. The front pump has been leaking and has started to leak quite a bit more. It is leaking from around the shaft that goes back to the engine.
I was wondering what would be the best solution for this problem.
Can they be repaired--get a rebuilt or do I have to go for a new one.
I just use it for personal use.
Are there any tricks to getting the pump out--I know I will have to remove the hood and radiator etc.
Any help and suggestions would be very much appreciated.
Thankyou
len in central michigan

[Log in to Reply]   [No Email]
jdemaris

05-19-2004 20:18:11




Report to Moderator
 Re: jdemaris-cannonball -others JD 410 TLB in reply to LENRAY, 05-19-2004 17:11:25  
To remove - on a farm tractor easiest way is to pull the front end off and remove pump from the bottom. With the hoe, best best is probably to pull the radiator and take the pump out from the top-front. Some hoes you can just barely squeeze the pump out with the radiator in, but it's close. The pump is fairly simple to work on. Even easier if all you want to do is fix the leak. The shaft in the pump rides in adjustable Timken style bearings. The shaft has two oil seals. The one on the outside is a dust and residual oil seal - NOT a high pressure oil seal. The high-pressure oil seal is inside the pump, and the pump must be removed and taken apart to replace. You must buy a new seal kit for the pump, you will need all new o-rings and seals because the pump must be taken completely apart. Remove pump. Then, take out the eight big piston plugs that circle the pump. It is advisable to mark each cap and pump housing next to it, so the old parts can go back in the same place. Main issue is, after removing the caps, and springs, you then stick you finger in hole and pull out each piston. These pistons ought to go back in the bore they came from simply because they are worn, and the wear will match the bore they've been in. Now, check, with the eight pistons and springs out, check the splined input shaft for end-play. If it does not feel loose fine. If it is loose, it will need to be tightened. If you can put a dial indicator on it, some guess work will be eliminated. Should have .002-.004" end play. So, let's say you find it has .008" end-play - then you'd need a .006" shim to tighten down to .002" end play, etc. Next, take the four bolt cover off of the pump. The bearing shims are there. Once the cover is off, pull the pump shaft out. Then, on the seal side of the pump, a snap-ring holds in the external low-pressure oil seal. Deeper inside, is a square sided o-ring with a teflon backup washer. That is the high-pressure seal. Replace and tighten things as you put it all back together with new seals and o-rings. The eight piston caps get new o-rings on them, and then teflon sheaves over the o-rings. That's because Deere had problems with those o-rings getting cut when tightening the caps.

[Log in to Reply]  [No Email]
lenray

05-20-2004 12:59:47




Report to Moderator
 Re: Re: jdemaris-cannonball -others JD 410 TLB in reply to jdemaris, 05-19-2004 20:18:11  
Thanks jdemaris for the help.
My ability is to be able to take the pump off of the tractor I don't think I would be able to do the repair.
I stopped at Worthington Tractor today they send the pumps to Missouri for a rebuild. It would be 1K for a rebuild of my pump or I could give them my old pump and get a rebuilt one also for 1K.
the pump has provided all of the power that I have ever needed but have been worried about the leak doing damage to the pump or other componets.
1000.00 seems like more than I want to put into it for what little use I have for the hoe.
But it isn't doing me much good if I can't use it also.

[Log in to Reply]  [No Email]
jdemaris

05-21-2004 05:31:37




Report to Moderator
 Re: Re: Re: jdemaris-cannonball -others JD 410 in reply to lenray, 05-20-2004 12:59:47  
I don't know what to tell you. Not including labor to remove and reinstall the pump, it should be a $100-$150 repair. I've done many of them. At one Deere dealership I did all the "bench" repairs or rebuilds for starters, alternators, fuel injection pumps, hydraulic pumps, steering and selective control valves. The eight piston pump is a routine job and takes about an hour to take apart and put back together - escpecially if it's just a reseal and tighten job. Only thing I'd advise to add is a new stroke control valve if it hasn't been replaced recently. It's a high wear item and costs around $50. When it starts to get worn, the pump will make hammering noises and/or make the engine crank hard when hot.

[Log in to Reply]  [No Email]
G.Lewis

05-21-2004 06:13:24




Report to Moderator
 Re: Re: Re: Re: jdemaris-cannonball -others JD in reply to jdemaris, 05-21-2004 05:31:37  
Jdemaris is right as always on your problem. Just finished overhauling a pump for a friend on an old 310. It is really an easy repair, just a lot of stuff to get out of the way. The biggist obstacle is the weight of the pump, it is beast being a piston type pump. You might need some overhead assistance when you swing it out. As jdemais said, replace the stroke control valve as they can give you fits when they get worn. This particular one that I did was giving problems. Also while you are in there, make sure you replace the fan belt. Use the JD belt, it will probably cost more than the pump seals but it will usually outlast other aftermarket ones. You don't want to go back in there anytime soon.

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy