[AT] Injection pump rebuild

[Bo Hinch]

Cecil , you did good , next time I need one rebuilt I`m coming to see
you [?] but
don`t think I will be doing any mechanic work anymore as my hands are nice
and soft and clean and sure don`t want to get them full of grease again .

Bo Hinc in s/w louisiana


On Sun, Jul 27, 2014 at 7:01 PM, <jtchall at nc.rr.com> wrote:

> Glad to hear a success story! Never had the need to go into one. Same story
> here, must be a super clean environment with all sorts of testing
> equipment,
> ordinary folks shouldn't open them up. Ever looked through a service manual
> for an older model tractor? A lot of them tell you everything you need to
> know. It just looks like there may be some specialized tools required and
> the need may arise for testing equipment. If the situation should ever
> arise, I may try it myself one day. Wonder if the repair shops charge more
> for pumps that are already taken apart?
>
> John Hall
>
>
> -----Original Message-----
> From: Cecil R Bearden
> Sent: Sunday, July 27, 2014 6:31 PM
> To: Antique tractor email discussion group
> Subject: Re: [AT] Injection pump rebuild
>
>
> > My JD 2270 swather was built in early to mid 70's.    I bought itabout
> > 3 months ago locally and spent a lot of time and about $1000 of parts
> > to get it back into shape.  When I bought it the PO said that the inj.
> > pump would plug with some little pieces of rubber at times and he
> > would just clean it out.  It would plug in the check valve in the top
> > cover of the Roosa Master pump.   I did not remember what this symptom
> > was at the time, but a week or so later, it came to me.  The Governor
> > drive ring in the pump  is made of 2 pieces with a rubber gasket like
> > piece that fits over some rivets on each piece to drive the governor.
> > Low Sulfur diesel and the new additives in fuel now tends to eat on
> > the rubber.  A new one made of polyethylene or ?? is the replacement.
> > I found a forum discussion about injection pumps on the tractor by net
> > forum ( I think) and got a email address for US Diesel who supplies
> > the parts.  There is a replacement governor ring that is solid, so I
> > ordered it.  A swather runs at a constant speed, so it would not need
> > a cushion between those plates.  I also ordered the seal kit and a bit
> > to remove the timing screw that is special to JD.  I put the parts up
> > and bought 2 repair manuals on the pump. one from IHC and the other
> > from ALLis.  2 days ago I started in the field and the swather cut
> > great, and traveled about 7 mph cutting 3-4 ft tall Johnson Grass,
> > clover and prairie grass mixed.  Great!!  Got to the end of a 3/8 mile
> > run and turned around to go back.  After about 250 ft, it began to run
> > down like it was out of fuel.  I worked with it for about an hour in
> > 105 deg heat.  It would run for about 45 seconds then just run down
> > until it died.  I opened up the pump and tied the shut off solenoid
> > with a wire to determine if that was the problem.  Same thing.  I made
> > a call to a diesel shop where I know the owner, and he said the
> > governor ring was shot.  He also said if I would take off the fitting
> > in the tip cover and let some fuel spill I could get it back home.  I
> > did, and got it home.
>
> I dug out my parts and searched for the manuals.  I could not find
> them.  I found a site on the internet where I could download the JD
> repair manual for the pump for $9 for the next 24hrs.  I got it and
> pulled the pump off and started working on the rebuild.  A lot of the
> parts included in the seal kit were just like a carb kit, you don't use
> all of them.  This morning I installed the pump and with a little work
> on getting the air bled, it worked great!   If I had wanted to go back
> together with the original type of governor ring, I would have only
> needed the seal kit.  $14 + shipping and the $12 bit to take out the
> timing screw.   As it turned out, I spent $85 on parts, and 5 hours on
> the overhaul, and it Works!!    Injection pumps have been such a mystery
> around here, there were never any books available and no parts.  It was
> always $500 to get one thru a shop no matter what the problem was.  I
> have a White 2-105 that has had the pump worked on 3 times because the
> top cover will leak after about 3 years.  $450 each time.  The same $14
> seal kit fits that pump........    Pump shops make those of us with the
> old equipment pay for their new test stands for the new stuff.........
> I had checked with the local pump shop here, and to rebuild this pump
> would have cost a minimum of $450 + parts.
>
> Just had to share this small victory.   I have wanted to be able to
> repair my inj pumps for years, finally it happened.
>
> Cecil in oKla
>
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