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TimS/TxJim

J

Jethro Lilley

Member
I have a 2510, ser# 6630 that my father bought new in 1966. The injector pump was
replaced a few years ago and has leaked fuel into the crankcase at the rate of one
quart every 10/12 hours or so. Doesn't leak when not running and rpms or work load
has no effect on the rate of leakage.The JD dealership changed hands soon after
replacement and would not honor previous work repairs. I have replaced the transfer
pump with no success. I feel like the tech pinched a seal when he attached the pump.
The area around the pump/engine connection stays damp from fuel. Not wet, just damp.
Getting tired of changing oil so often. I use Rotella 15/40. 7 quarts in, 8 quarts
out. I use the tractor about 30 hrs per year for farmstead maintenance.

What I would like to know is... What would be the procedure to R&R the pump to
replace the seal which prevents fuel from leaking into the crankcase? Should I be
able to simply back the pump out and replace the seal, or will I need to do a re-time
etc? Also need to know the # of the seal. The JD Parts site doesn't show it.
Thanks.Jethro.
 
I presume your tractor has a DBG inj pump. Seals are parts key 21 T11290 Seal - SEAL, DRIVE SHAFT ADD 5.28 USD 10.56 USD
I suggest to set engine on #1 tdc although I'm not sure it's really necessary as long as one doesn't change rotation of engine or inj pump.
mvphoto24871.gif
 
Thanks Jim for the quick reply... you could have finished your breakfast first.
The local dealer has them in stock for $5.60 each. Since there is no spark plug hole to
stick my finger in, how do I find TDC on a diesel? I've never needed to do it before.
 

There's a timing window on RH side of clutch housing that has a cover held in place by 2 slot headed screws and there's a timing window on the IP that also is held in place by 2 screws.
 
Yes,,pay more attention to the mark on the pump,,blow the lines and pump area clean, you may be able to leave a couple lines in place and still get the pump out,, when you lift the pump out pull the shaft out of the pump, take note on the dot on the end of the shaft and see how it mates with one in the pump,, remove and replace the seals, they will be opposed to each other, one keeps fuel in the other keeps engine oil out,, use your finger to check the brass Barrel, or sleeve in the pump, if the seal has a groove worn into it you will need to take it to a pump shop and have it changed out,,after satisfying that slip the shaft back in,,keeping the 'dots' in line, and being earful not to turn the upper one inside out as you go in...a bit of lube helps with this..
 
Don't worry about the timing. Scratch a mark on the pump base
corresponding with a scratch mark on the engine plate. Just don't
turn the engine.
 
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