73 IH fuel pump timing to engine

Derl Hicks · Oct 24, 2008

How do you time a newley rebuilt fuel pump to the engine. Or how do you know if the timing is off??

Janicholson · Oct 24, 2008

Model and engine are needed to make a reasonable answer. help us. JimN

cole in mo. · Oct 24, 2008

If you're talking about a tractor diesel injector pump its not hard. Look at the end of the shaft that drives the pump, you will see a dot near one end of the flat surface, there will be a matching dot inside the pump hole, turn the pump untill the dots will match as you slide the pump onto the shaft. Remove the two screws and the plate on the side of the pump, then slowly turn the engine in the correct rotation. If you have a pump with a stationary mark turn the engine untill the mark on the rotor lines up with it, then tighten the pump bolts. Depending on which tractor and pump you have timing marks will differ.

JDemaris · Oct 25, 2008

Static timing, or dynamic timing? Lining up marks when bolting a pump onto your engine only sets the intial "static" timing and does not verify timing when an engine is running. Most pumps also have a timing advance that changes with RPMs and/or load. To check advance, you need some special tools and it depends on the engine or pump. Timing light hooked to a line-pulse adapter, timing window on Roosamaster pumps, luminosity probe for glow plug engines, etc.

Derl Hicks · Oct 26, 2008

This is a robertbosch fuel pump CR and was recently rebuilt and since I reinstalled it on the tractor I can not keep it running. This pump has the timing window. Could this thing just be air bound? When I removed it the marks were lined up and did not move. Not sure about the timimg marks on the pump when reinstalled.

73 IH fuel pump timing to engine

Derl Hicks

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Janicholson

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cole in mo.

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JDemaris

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Derl Hicks

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