Power steering pump gear torque vs set distance

[snoop]

I have read a few contradicting resources that say to torque the gear nut to 54 pounds, FSM included. However I read else where to measure the distance of the gear on the old pump before removing and set it the same on the new pump so the gear meshes with the engine. Some have indicated a clicking sound when the distance is not the same. Torquing it to 54 pounds does not equate to the same distance on the old pump so I am not sure what to set it to.

I am imagining that the taper is the part that sets the distance and the torque of 54 dictates where it should reside on the taper.

 

[baldilocks]

Setting the distance and the retention nut torque are two very different functions. Achive gear position then install the rention nut to the correct torque.

 

[davidp14]

I measured the distance to the top of the gear on the old pump and then beat the new one with a bfh until it matched. No noises.

The nut didn't really do anything for the gear position.

 

[snoop]

Setting the distance and the retention nut torque are two very different functions. Achive gear position then install the rention nut to the correct torque.

The nut mates to the face of the gear, therefore when tightening the nut the gear will slide down the taper.

 

[baldilocks]

Yes, but using the retention nut is not necessarily the way to set the gear.

 

[snoop]

Yes, but using the retention nut is not necessarily the way to set the gear.

The concern I have is that my gear is set further down the taper than the old pump. I did not hammer the gear on like I have seen others, i just set the gear on and torqued it. The only thing I can do to get the measurement right is under torque it.

 

[baldilocks]

Same gear same pump? New parts? Are you following the fsm? Let’s start over from the beginning.

 

[snoop]

I pulled an unknown pump from the truck. I don't know how to identify if the old pump is OEM. It looks the same as the new one from Toyota. The gear is reused from old the pump. I am following the FSM, it does not mention anything about measuring the distance of the gear, hence I wanted to double check here on this process.

 

[ajax1]

I never measured the gear just torqued it down and installed. No noise no issues. I have also just rattled it on with impact and no issues

 

[baldilocks]

Same here.

 

[Rifleman]

Since the shaft is tapered the pump gear can only go on so far, you need to tighten the nut to 54 foot pounds, and install the pump. If after you install it, you hear a clicking noise, the most likely cause of that noise is due to the bolt holding your harmonic balancer in place, not being correctly torqued to 304 foot pounds.

 

[Tennessee80]

Just installed a rebuilt/reman power steering pump and forgot to measure the distance of the gear on the old pump.

I have a clicking sound when I start up the rig. Do I need to pull the dang thing and tap the gear down farther on the shaft? This is going to get messy, ha

 

[Malleus]

If it's ticking, the gear probably has a nick on it. Those things are ridiculously easy to scratch.

 

[Tennessee80]

If it's ticking, the gear probably has a nick on it. Those things are ridiculously easy to scratch.

Interesting.... so it probably won't smooth out by running it....

 

[Malleus]

Nope

 

[Malleus]

You have two choices: live with it or buy a new gear. It'll work fine until the engine dies, it will just bug the crap out of you...unless your stereo goes to 11.

 

[Tennessee80]

You have two choices: live with it or buy a new gear. It'll work fine until the engine dies, it will just bug the crap out of you...unless your stereo goes to 11.

Ha. Well

I’m going to pull the pump and reseat the gear. Fingers crossed!

 

[mudgudgeon]

Ha. Well

I’m going to pull the pump and reseat the gear. Fingers crossed!

New gear is cheap. $40 maybe.

 

[Rifleman]

Just installed a rebuilt/reman power steering pump and forgot to measure the distance of the gear on the old pump.

Ha. Well

I’m going to pull the pump and reseat the gear. Fingers crossed!

Just as an FYI, that gear has a tapered bore, and is mounted on a tapered shaft, So when you remount that gear it's going to stop at the same spot as it's sitting at right now,

 

[1973Guppie]

Just as an FYI, that gear has a tapered bore, and is mounted on a tapered shaft, So when you remount that gear it's going to stop at the same spot as it's sitting at right now,

Exactly. I am confused on why this is an issue? If you are using a used pump maybe where the taper might of gotten messed up? but don't use a used pump then? I don't think there is any way to adjust how deep it sits anyhow.