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John Deere Tractors Discussion Forum
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61 vs 63 4010, one has drain line from hyd pump to

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4010 question o

05-10-2007 08:45:51




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the brake master cylinder line to the transmission sump and one doesn't...the 1963, doesn't, the 1961 did, at least until the fire.....

So should I just plug the outlet in the pump on the 1961, or is it better to have that drain line running from the front pump back to dump into the transmission sump via the master cylinder drain line to sump.

Was that a service bulletin that came out later, and just hasn't been applied to the 1963 tractor I have? Or was it done on the early tractors but discontinued...I see JDPARTS still shows the kit to put it on, so I am thinking its a service bulletin for some reason or another.

Oh and I have the tractor that burnt up and running, rebuilt injection pump, radiator, new lift pump, rebuilt generator, original starter, new (used) tires, batteries, all new wiring, new hoses, one scv I put new seals in and it's in the shop getting adjusted as it had a high pressure leak before and still does, the other scv seems to be working fine, I rebuilt one of the breakaway couplers and need to get a kit to rebuild the other...new oil pan gasket, timing cover gasket and front crank seal, new (used) dampener.

I had to pull the steering valve out and tear the top and bottom off it, put new top seals in it and use the welder to build up the cotter pin holes and redrill them in the bottom of the bottom shaft as pre-fire it appeared the cotter pin had failed and the castle nut had backed off and was in the process of being chewed up and chewing up the bottom of that shaft, I have that back together and the steering works good, no leaks. I used safety wire 4 ways on that this time, looks very secure now.

The tractor actually starts and sounds better than ever, courtesy of the newly rebuilt injector pump I am sure.

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skip33652

05-10-2007 16:51:16




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 Re: 61 vs 63 4010, one has drain line from hyd pum in reply to 4010 question of the day, 05-10-2007 08:45:51  
the original tractors did not have the bleed line.also if memory serves correct the pump housings were different.if the pump housing has been updated it must have bleed line.If it is original pump housing there is no place to put bleed line without drilling hole.Paul



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G/MAN

05-10-2007 13:47:20




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 Re: 61 vs 63 4010, one has drain line from hyd pum in reply to 4010 question of the day, 05-10-2007 08:45:51  
You have to have a bleed line from the main pump to sump. If you don't, oil that gets past the quad-ring gets trapped behind the outer seal and will force it out. Putting the '61 back to the way it was before the fire is your best bet. If it was fine before with that line set-up, it will be fine after.



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