belly pump, seal replacement

47farmallM · Nov 29, 2012

how do i replace the seal on my m belly pump, its leaking really bad whenever i move the lever

iowa steve · Nov 29, 2012

is it leaking at the driven seal or at the control lever? if it just leaks when your under pressure i might check the pipe fittings as they may have gotten loose or the threads may be worn.

David G · Nov 29, 2012

You need to take the coupling off the front, it screws onto the shaft. Mine still leaked after changing seal, needed speedy sleeve.

47farmallM · Nov 29, 2012

when the lever is pulled back it pour from the seal. which was does the coupling screw on? and how did you get it off? i have tried everything so far and no luck

David G · Nov 30, 2012

I had to take mine out, apart and put a bar between the gears to get it loose. The threads are right hand. I thing some people have been able to get the threads loose without taking it apart.

MisterT · Nov 30, 2012

Build an adapter so you can use an impact wrench. The coupler will come right off.

pete 23 · Nov 30, 2012

Don't overlook the groove where seal runs on
coupler, like said, may need speedy sleeve or new
coupler nut. Also, they have either a bushing or
needle bearing depending on vintage and they
definately wear out. If shaft is loose seal will
not hold. To get coupler off, I usually try a few
good wacks in counter clockwise direction with
hammer and brass drift. If that does not work I just
pull them apart and clamp gears in vise. Not unusual
to find good reason inside for taking them apart.

belly pump, seal replacement

47farmallM

Member

iowa steve

Member

David G

Well-known Member

47farmallM

Member

David G

Well-known Member

MisterT

Member

pete 23

Well-known Member

Similar threads