CB injection pump leak

Roger in Iowa · Jan 30, 2017

1970 4020 with a CB injection pump leaking where the throttle lever attaches to the vertical tube coming out of the top of the injection
pump. Can this be fixed without taking the injection pump off?

M w J · Jan 30, 2017

Yes o rings But it has been years since I did it . I think that throttle control is like rack and pinion maybe spring loaded . I have done it on the tractor .

Dieseltech · Jan 30, 2017

Probably best in the long run to reseal the complete pump. Been caught too many times with minor repairs springing other leaks later on..

travis miranowski · Jan 30, 2017

I have repaired several of these by just replacing the o-rings in the throttle throttle plunger. Not hard to do. less than $10 worth in parts. Not out much if it decides to start leaking else ware later.

thepumpguysc · Jan 31, 2017

Easy enough to do.. 2 orings, 1 on each side.
Just pay attention to the throttle angle.. Idle at 12:00??
It can go back many different ways..
Probably a REAL GOOD TIME to flip the gear also..

CB injection pump leak

Roger in Iowa

Well-known Member

M w J

Member

Dieseltech

Well-known Member

travis miranowski

Member

thepumpguysc

Member

Similar threads