Jump to content

Loose Oil Pump Drive Gear


Recommended Posts

Found the drive gear on the oil pump/distributor shaft is loose (rotates a few degrees).  The gear for the PI metering unit is fine.  I see the main suppliers still stock replacement Mills pins, so is this a common problem? 

I assume that the pin should be driven out with a small punch (tapping on the end of the pin which still has a slightly conical end).  I will try to support the gear to avoid damage, but any other advice?

Can I expect to find wear on the pin, or a slightly enlarged hole in the shaft? If the latter, then any suggestions as to how to remove the slop?                         

Link to post
Share on other sites
56 minutes ago, ed_h said:

Use a spring roll pin instead of the Mills pin. The "spring" will take up the slop.

Ed

SDC12868a.JPG

 

I think a sprung roll pin is sound advice. The only problem I see is that if the gear has been moving a few degrees on the shaft for some time, the holes on the gear could be slightly out of round and slightly larger than in the pin itself. I would say re-drilling both with a slightly larger pin might be a better solution.

Kevin

Edited by boxofbits
Link to post
Share on other sites

The gear on mine was loose, too, but the holes didn't appear to be oversized.  The spring pin in its relaxed state is a little larger than the holes.  It can expand into a hole that may be slightly oversized.  In my case, the pin tightened up the joint very well.  If it hadn't, I might have tried a larger pin or something else.

Ed

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...

Important Information

Please familiarise yourself with our Terms and Conditions. By using this site, you agree to the following: Terms of Use.