Install of Oil pump drive shaft gear (1 Viewer)

[musthave]

Installing the pump drive shaft gear on a new block. I notice that it is free spinning. Not keyed. Is that correct?

Installed oil pump drive shaft gear, crankshaft rotor, and crankshaft timing gear. It still spins freely.

I don't see anything in the FSM that says it should/shouldn't spin freely.

If it spins freely, how does it turn things like power steering gear, oil pump, etc.?

 

[midfat]

Is your crank bold installed and tightened?

 

[musthave]

I did a bunch of searching and found @cruiserdan post that says it's not keyed. Which means that it should spin freely until the pulley is put on I suppose?

1994 FJ80 oil pump drive gear

Getting ready to put the 1FZFE back together and the oil pump drive gear key and keyway have lot of slop in their mating...has anyone dealt with this when overhauling the beast....

forum.ih8mud.com

 

[musthave]

Is your crank bold installed and tightened?

No, the timing cover is still off and the crank pulley is off, as is the bolt. It sounds like the bolt against the pulley puts the pressure needed onto the pump drive shaft gear.

 

[midfat]

Yup. Hence the 304 Ft-lb torque load. The balancer is keyed, but the drive gear is a compression fit.

 

[cruiserdan]

The gear is clamped by the crank pulley. That's where the 309 lb-ft torque comes in.


EDIT: posted at exacly the same time.

 

[musthave]

The gear is clamped by the crank pulley. That's where the 309 lb-ft torque comes in.


EDIT: posted at exacly the same time.

Excellent! Thank you!

 

[midfat]

The gear is clamped by the crank pulley. That's where the 309 lb-ft torque comes in.


EDIT: posted at exacly the same time.

Go with his number. CDan is more right.

 

[cruiserdan]