Posted by Vaughn [172.69.22.95] on Saturday, May 23, 2020 at 19:22:41 :
In Reply to: Re: another timing question.. posted by Howard [162.158.62.172] on Saturday, May 23, 2020 at 18:57:31 :
The pump drives the distributor and there is a slot in the pump that the distributor shaft slips into. When #1 cylinder is TDC, the pump must be timed to the cam for proper timing of the distributor.
Install Oil Pump.
- Crank engine by hand and hold thumb tightly over number one cylinder spark plug hole, or install a compression gauge in the number one spark plug hole to determine when the piston is rising on the compression stroke.
- When compression is felt by thumb or shows on gauge, turn crank until piston is on top dead center as indicated when the indicator points to “DC” on fan pulley.
- Turn pump drive shaft until the slot in the end of the drive shaft lines up with the holes in the mounting flange.
- Then turn the shaft gear one tooth counterclockwise.
- Carefully install the pump while holding it in this position. Do not turn the drive gear while installing the pump.
If you're off a tooth it places the dist. slot at the bolt when timing the ignition spark.