Buda injector pump timing

55deere70 · Jan 12, 2013

We have a Buda 6DT-468 on our sawmill. I have to remove the injector pump to replace a leaking freeze plug. Does anyone know how these pumps (American Bosch) are timed so I don't lose the timing when I remove the pump? I have a manual on order, but I don't know if this info is in it.

Billy Shafer · Jan 12, 2013

If you have what I think you do. Should be a small cover held on by two screws. Remove it and you will see a line. Rotate the engine by hand. You should see the front piece rotate. There is a line on it. When the two lines or lined up. You can then pull the pump. Don't move the engine after you do

55deere70 · Jan 12, 2013

I have removed the access cover opposite the pump drive and don't see what I would recognize as timing marks. I can't see where the gears mesh through the access hole. The pump is bolted to the gear with three bolts and it looks like some type of marks between the hub and the gear. The problem is, I don't think it comes apart that way, I think the gear comes out the back with the pump. I may be wrong, just wondering if anyone else knows about these.

Ian Beale · Jan 12, 2013

55deere70,

FWIW

Our Allis 45 grader has the supercharged 516 engine and American Bosch rotary pump. From the service manual (in short form)

Renoving pump -

No 1 near TDC, engine shutoff off.

Turn crank slowly till FPI line in window on bellhousing (top LHS on ours) lines up with pointer. Pump timing pointer (under a cover on top of the timing chest over the pump drive gear) should be lined up with centre timing mark.

Disconnect lines etc. Remove the 3 mounting bolts and remove pump. Keep it lined up just like that or you'll need to do some internal timing too on the head gears in the pump.

When reinstalling on ours this pump drive has an adjusting shaft through the pump drive gear (which is held on with 3 bolts that allow turning to match the timing marks) This is through the supercharger belt drive pulley assembly on the front so we haven't got a cover there. You can probably move the gear instead as you put the pump in - ours now has bolts not studs and you can slide the pump in, engage the gear and then turn the body to line the timing marke and bolt it up.

HTH

55deere70 · Jan 12, 2013

Thanks Ian, that may be of some help. When I go back out to the mill, I'll look for additional marks.

Buda injector pump timing

55deere70

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Billy Shafer

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Ian Beale

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