Thread: Power steering pump pulley bolt thor

Sounds like The problem is the bearing in the pump has released its grip on the shaft, which causes the shaft as a whole to walk out the front of the pump. it is pressed on during manufacture. A new pump is the best remedy....

JC

Thanks JC, I can see that the pulley creeps forward off the pump shaft, the shaft doesn't seem to be coming out of the pump?

I have added more photos. I have put the pulley back on the pump shaft and installed a 25mm M8 high tensile bolt to hold the pulley on along with a spring washer and two flat washers. Its running and idling fine, and not coming off anymore, but I still don't understand why there's was no bolt there originally.

Originally Posted by glenhendry

Thanks JC, I can see that the pulley creeps forward off the pump shaft, the shaft doesn't seem to be coming out of the pump?

I have added more photos. I have put the pulley back on the pump shaft and installed a 25mm M8 high tensile bolt to hold the pulley on along with a spring washer and two flat washers. Its running and idling fine, and not coming off anymore, but I still don't understand why there's was no bolt there originally.

Errr, sorry I should've read more carefully, thor engine. Yes the pulley should be a tight press fit on the shaft,no bolt required as far as I remember. What you have done will probably help in the short term, but basically the pulley should be a pressfit. Eventually it'll rotate.
Knurling and loctite may work?
JC

Just a quick update, all is going well so far after a couple of days of driving. The bolt seems to be holding, I am a little concerned that the rotation of the pulley and the shaft may work the bolt loose. I still don't see how a woodruff key isn't a better design.

Another update for posterity, after three months it still seems fine. I still think a new pump is in the near future.