Roosa Master Injection pump 63 or 64 172CI Engine Ford 4000

(quoted from post at 10:21:29 05/25/08) I have a DBGVCC 429 4AL on my 63 or 64 Ford 4000. I think the govenor ring is going out. It will surge to high RPM's and the throttle will not respond well at all. Just a slight tap down it will die, slight tap up it will rev up too high. Will a leak in the fuel return line cause this? Does anyone know if a DBGVCC 435 16AP pump will work in place of this one. I do know the plunger size is bigger but what other differences are there. I recently cleaned the fuel tank, changed the filter so I am dealing with good fuel delivery. It's wierd though, one day I can start it up and it runs great just like it should and another time start it up and it wants to run crazy. Will the govenor ring cause that?

Thanks

Dan

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(quoted from post at 13:23:20 05/26/08) Shattered plastic governor dampener ring sends small pieces of plastic all through the pump and often creates overly high housing pressure - which result in the problems like you describe.
Often leads to engine shut-down.

I had to fix many - out in the woods and field when I was a Deere mechanic. Deere,Case,IH, Ford, AC, Hercules, et. al. all use some versions of the same pump.

A complete seal kit with a new dampener is $12. A person with experience can pull the pump all apart, reseal and put back togeher - in one hour.

There is an updated dampener that can be installed and it will never come apart again - for an extra $40 (EID retainer). Stanadyne used it in all the pumps after 1985.

If your pump has high hours - you can assume it will need a few more parts than just the seal kit - if you want to replace them while apart. Main wear items are -

front drive bushing where the shaft-seals ride - new one cost $10.

fuel metering-valve - $12

fuel pump vanes and liner - $16.

That's about it - most pumps that get "rebuilt"
at a Stanadyne-certified only get those parts plus a seal kit. $50 in parts total. Cleaned up, put on a test-stand, fuel delivery and timing advance checked - and then a $350-$650 repair bill.

If you are careful - no adjustments get altered. You can, however, check the max. fuel delivery setting while apart with a 2" micrometer.
Timing advance can be checked on a running machine with a $8 plastic timing window - or a conventional timing light hooked to a piezo-pickup on an injector line.

Click to expand...

(quoted from post at 19:53:38 05/26/08) Pump has to come off the engine and then separated into two halves to get to the governor weight assembly for repair. Here's a few photos.

<a href="http://s104.photobucket.com/albums/m162/jdemaris/?action=view¤t=weightretainerringoldstyle.jpg" target="_blank"><img src="http://i104.photobucket.com/albums/m162/jdemaris/weightretainerringoldstyle.jpg" border="0" alt="Photobucket"></a>

<a href="http://s104.photobucket.com/albums/m162/jdemaris/?action=view¤t=DBDisassembledPump-1.jpg" target="_blank"><img src="http://i104.photobucket.com/albums/m162/jdemaris/DBDisassembledPump-1.jpg" border="0" alt="Photobucket"></a>

<a href="http://s104.photobucket.com/albums/m162/jdemaris/?action=view¤t=dbsideways.jpg" target="_blank"><img src="http://i104.photobucket.com/albums/m162/jdemaris/dbsideways.jpg" border="0" alt="Photobucket"></a>

Click to expand...

(quoted from post at 13:23:20 05/26/08) Shattered plastic governor dampener ring sends small pieces of plastic all through the pump and often creates overly high housing pressure - which result in the problems like you describe.
Often leads to engine shut-down.

I had to fix many - out in the woods and field when I was a Deere mechanic. Deere,Case,IH, Ford, AC, Hercules, et. al. all use some versions of the same pump.

A complete seal kit with a new dampener is $12. A person with experience can pull the pump all apart, reseal and put back togeher - in one hour.

There is an updated dampener that can be installed and it will never come apart again - for an extra $40 (EID retainer). Stanadyne used it in all the pumps after 1985.

If your pump has high hours - you can assume it will need a few more parts than just the seal kit - if you want to replace them while apart. Main wear items are -

front drive bushing where the shaft-seals ride - new one cost $10.

fuel metering-valve - $12

fuel pump vanes and liner - $16.

That's about it - most pumps that get "rebuilt"
at a Stanadyne-certified only get those parts plus a seal kit. $50 in parts total. Cleaned up, put on a test-stand, fuel delivery and timing advance checked - and then a $350-$650 repair bill.

If you are careful - no adjustments get altered. You can, however, check the max. fuel delivery setting while apart with a 2" micrometer.
Timing advance can be checked on a running machine with a $8 plastic timing window - or a conventional timing light hooked to a piezo-pickup on an injector line.

Click to expand...