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injector pump seal

Let me know what you find out. I have the same problem on a 450D. I have replaced every seal I can find. I even replaced the transfer pump. Still leaks.
 
Well...I have ask several shops near me...they scratch their headhsas and say they have no idea. Problem is, it's a good old tractor I use for working hay. It makes a great raking tractor with the narrow front end.
It is one of the ones I kept when dad passed on and I just refuse to get rid of it.
It's not pretty...but will work the tires off a lot of the new ones.
 
If it's a CAV pump, you can take the top cover off the pump (no need to remove entire pump) and put in new seals with a cost around $20.
 
i dont know what kind of narrow front end your talking about on a wd9. they are a standard tractor and came with the standard front end.they are not a farmall that can be wide or narrow.
 
See you haven't gotten much help. I looked in my book which doesn't cover that exact pump, but it sure looks like you can take off the lever and there should be a washer, felt washer and then a lip seal installed from the outside which you could then measure up and find a replacement. I think I understand the question correctly that you have a leak to the outside right.
 
Your question seems to indicate that you have a leak of fuel into the pump sump. Maybe I am not reading you correctly. Anyway, I can say this that if you have the model B series pump on your 450 with out the scavenging pump (or maybe it is the A series also) that there is an 0-ring inside that does not normally come in the repair kits for them pumps. Couple of years ago I took a pump in to D K Diesel in Watertown S.D. for a customer. It still filled sump with fuel after they repaired it. They inturn got ahold of the "old guy" that used to repair them and he informed them of this so after a return trip and tear down they got it repaired. I used to do a lot of adjusting and minor repairs on those pumps but never did the complete rebuild. A complete tear down is very costly though.
 
Pete, Plow Hand
Only put a seal there one time several years ago, so no expert. From what I seem to remember is the splines where the throttle lever goes are bigger than the rest of shaft, so the washer or seal won't come off until the shaft is removed. I may have removed more parts than necessary to get the shaft out, I just can't remember. Think the governor shaft, primary pump at the least. Maybe plumger and rack also has to come off. The lever on the inside has a tapered bolt with nut something like a water pump drive on H,M ETC. to hold lever to shaft. I had the whole pump apart so can't say exactly what needs removed to just get the shaft out.
 
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