Originally Posted by hpeer
Interesting about removal
. MY pump requires the engine mount to come off. Ditto the fuel
must have a different configuration. Mine is on the other side from the injection pump under the alternator
. It was simple to remove and replace.
Now the rebuild
was a little more difficult. I would say it would not be a repair
I would like to do underway. I am glad this is my spare pump.
It took about a1.5 hours to do in my shop on land.
Notable in the rebuild:
To remove the gear to replace the bearing behind the gear requires a press
(Not an item I have on my boat.)
If you only need to replace seals
the gear does not need to be removed.
The snap ring is difficult to remove through the slots in the gear. You will need a very good snap ring pliers.
Once the snap ring is out the shaft and bear can be removed. It is easily driven out with a soft drift punch (aluminum in my case) and hammer
Seal can be removed with a punch once the shaft is out, being careful not damage the seal bores.
Replace in the seals
requires several seal drivers. I used a large socket for the oil seal
. But had to fabricate a driver for the mechanical seal out of a pcv pipe coupler.
I would say the job is doable if you have the tools and bit of experience with replace seals and remove snap rings and if replacing bearings have access to a press or a shop that has a press to remove and replace the gear. It is unfortunate, that Yanmar
used a pump that so difficult to rebuild.
Thanks for all that provided comments.