| [GMCnet] Building the GMC to sell. Shimming the rear suspention. [message #333414] |
Tue, 12 June 2018 12:20 |
glwgmc
Messages: 1014
Registered: June 2004
Karma:
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Senior Member |
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I would offer a slightly different slant - pun intended. The shims are used to correct toe if both wheels on one side are parallel with each other, but not with the frame. They are also used to correct camber if both wheels on one side are out of adjustment by the same amount. If one is out of alignment and the other is in proper alignment with the frame, then the arm must be bent to bring it into alignment with the good wheel and with the frame. Most often camber is correct on both, but one will be bent in from hitting a curb at some point. Those forged bogy arms look and are stout, but they will bend using a port-a-power. Bend slowly and let off the pressure to see how far they moved when at rest. Keep doing this forcing them out about 1/4 inch at a time until at rest they are where you want them. While under pressure peening with a hammer will help the bogy arm take shape and will relieve internal stress. it is a slow, repetitive process. If you are pressing against the frame with your port-a-power be sure to use a stout piece of wood or metal to spread the load as you do not want to bend the frame.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed and hand crafted in the 1907 former Masonic Temple building in historic Kerby, OR
glwork@mac.com
http://jerrywork.com
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Message: 5
Date: Tue, 12 Jun 2018 06:30:07 -0700
From: Todd Sullivan
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Building the GMC to sell. Shimming the rear
suspention.
Message-ID:
Content-Type: text/plain; charset="UTF-8"
I believe the bogie shims are primarily for camber as the ones I removed
from my 77 were along the top mounts only. Assuming no bent frame or arms
camber is likely the only adjustment needed at the rears. As Ken H stated
toe can be adjusted with pushing or pulling on the arm(s) in question.
Sully
Bellevue.
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Jerry & Sharon Work
78 Royale
Kerby, OR
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