G 20 3/4 Ton Van V8-305 5.0L VIN H 4-bbl (1984)
Idler Arm: Technical Service Bulletins
Steering - Idler Arm Inspection
CHEVROLET NUMBER: 87-T-87
SECTION:
3B - Steering
DATE:
March, 1987
SUBJECT:
INSPECTING G AND M VAN IDLER ARMS
MODELS:
ALL 1983-1987 G AND M VANS
Sometimes an idler arm check is made because of a shimmy complaint. In these cases, be sure to check the other possible causes such as dynamic
wheel/tire imbalance, wheel runout, road surface irregularities, etc. A number of G and M van idler arms have been replaced that inspection has revealed
were not defective. To help prevent the unnecessary customer dissatisfaction involved in replacing these idler arms, the inspection procedure below
should be followed.
NOTE:
The equipment necessary to perform the inspection procedure is as follows:
^
A spring scale capable of reading 110 N or 25 lbs (Kent-Moore P/N J- 34913).
^
Dial indicator with magnetic base or suitable scale for measuring deflection.
Figure No. 1 -Checking G Van Idler Arm Movement
