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General Information => General => Topic started by: rallydiesel on May 15, 2007, 10:00:01 pm

Title: Does the lock pin for IP always set TDC?
Post by: rallydiesel on May 15, 2007, 10:00:01 pm

Just curious, do the locking holes for the injection pump line up exactly at TDC? I'm just getting ready to tilt the pump forward so I have access to injector 2 and am wondering if the hole in the sprocket and the one in the bracket always align to TDC?

Title: Does the lock pin for IP always set TDC?
Post by: RabbitJockey on May 16, 2007, 03:44:50 am

i didn't know the pump needed to be titled forward to get to injector 2?

Title: Does the lock pin for IP always set TDC?
Post by: rallydiesel on May 16, 2007, 07:52:47 am

My pump is very close to the engine. The LDA prevents me from getting a socket over the injector. I am going to tilt it forward and move it over one tooth so I can get at injector 2 and do a proper compression test.. Last time I had to take the pump top off and by that time the engine was cold  :oops:

Title: Does the lock pin for IP always set TDC?
Post by: Vincent Waldon on May 16, 2007, 08:23:48 am

Nope, the alignment holes are only a rough guess at best.... actual timing is done with a dial gauge etc etc etc.

Most people would just scribe a couple of marks between the pump and the bracket so that they can move the pump back into position when they are done.  I usually just check the timing anyways with the dial gauge.

Vince