model c roosamaster injection pump leaking fuel at throttle pinion lever.

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cwheat
40C crawler
40C crawler
Posts: 22
Joined: Mon Oct 01, 2012 4:32 pm
Location: Brookhaven, MS.

model c roosamaster injection pump leaking fuel at throttle pinion lever.

Post by cwheat » Wed Oct 18, 2023 5:24 am

Hello all,
I have one of the small obsolete cbc roosamaster on a straight 350 dozer and the pump is leaking at the throttle control lever. Wondering if any one could tell me the steps to replace the oring seal especially how to keep the rack and pinion in time or syncronized. The exploded view shows a seal on the engine side of the pivot shaft and looks like the pinion that the rack gear meshes with would have to be removed. Hoping someone with experience can tell me how to disassemble it. The pump is running the engine perfectly, just leaking a small amount when running.

cwheat
40C crawler
40C crawler
Posts: 22
Joined: Mon Oct 01, 2012 4:32 pm
Location: Brookhaven, MS.

Re: model c roosamaster injection pump leaking fuel at throttle pinion lever.

Post by cwheat » Sun Oct 29, 2023 1:12 pm

any one???

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LeonardL
350 crawler
350 crawler
Posts: 869
Joined: Thu Oct 06, 2011 7:11 pm
Location: Missouri

Re: model c roosamaster injection pump leaking fuel at throttle pinion lever.

Post by LeonardL » Tue Oct 31, 2023 6:33 am

I don't have much experience on the C model injection pumps. A friend of mine had to send his pump to a rebuilder to get that seal replaced. He said it takes a special tool to install it. Sorry you haven't gotten any replies to this. When I saw you hadn't I reached out to my friend and that is what he said.
40 plus years working on JD 350s, 400Gs, 450s and other equipment both Ag and Construction.

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77 Ford
1010 crawler
1010 crawler
Posts: 477
Joined: Tue Nov 22, 2011 7:52 pm
Location: Missouri

Re: model c roosamaster injection pump leaking fuel at throttle pinion lever.

Post by 77 Ford » Tue Oct 31, 2023 7:39 am

I will second it's better to send them off and have the whole unit rebuilt. All the seals are the same age as the one that is leaking...
JD- 450C track loader
Serial #208336T

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