Pinion Bumper change advice
Thread Starter
Instructor
Joined: Jun 2010
Posts: 120
Likes: 1
From: CT
Pinion Bumper change advice
Removed the old Pinion Bumper on my 71. To do this I removed the forward most pinion bracket bolt from the differential housing to allow some access to remove the bumper and bolt which worked well.
Upon re-installation of the new bumper, I could not compress it enough even with an impact wrench to get the pinion angle to support re-installation of the forward bracket bolt. Could not line up the bracket with the forward bolt bore of the differential.
The ONLY way to get the forward bracket bolt back in was to remove the pinion bumper again and then install the forward bracket bolt without the bumper installed.
Now there is hardly a 1/4" between the pinion bracket where the bumper should go and the frame crossmember - hardly close to the 1.5" or so I would need to wedge the bottom of the bumper in.
ANY SUGGESTIONS??
Upon re-installation of the new bumper, I could not compress it enough even with an impact wrench to get the pinion angle to support re-installation of the forward bracket bolt. Could not line up the bracket with the forward bolt bore of the differential.
The ONLY way to get the forward bracket bolt back in was to remove the pinion bumper again and then install the forward bracket bolt without the bumper installed.
Now there is hardly a 1/4" between the pinion bracket where the bumper should go and the frame crossmember - hardly close to the 1.5" or so I would need to wedge the bottom of the bumper in.
ANY SUGGESTIONS??
Thread Starter
Instructor
Joined: Jun 2010
Posts: 120
Likes: 1
From: CT
The struggle is that the differential is rotated a few degrees on the axle axis, sending the snout of the pumpkin and therefore the bracket further in the upward position such that there is little clearance between the bracket and the cross member. The differential mount assembly to the frame is the only portion that will have any give in it but it is difficult to find purchase for the crow bar to rotate the bracket and pumpkin downward with the necessary force to provide enough space to slide the bumper in.
Le Mans Master
Joined: May 2002
Posts: 5,086
Likes: 786
From: Lebanon Township New Jersey
How about putting a jack under the center of the leaf spring where it bolts up to the cover on the back end of the differential. As you lift there it might rotate the front of the differential downward.
