Brakes - Modified Brake Bleeding Tool

91chevy07

Number: 91-226-5


Section: 5


Date: March 1991


Corporate Bulletin No.: 165002R


Subject:


BRAKE BLEEDING TOOL MODIFICATION


Model and Year: 1985-91 M VANS, 1989-91 S/T TRUCKS, 1988-91 RN C/K TRUCKS, 1990-91 L VANS WITH KELSEY HAYES BRAKE COMBINATION VALVE AND ANTI-LOCK BRAKES 1991 CAPRICE EQUIPPED WITH KELSEY HAYES BRAKE COMBINATION VALVE AND BOSCH ANTI-LOCK BRAKES


MODELS: 1985-91 M VANS, 1989-91 S/T TRUCKS, 1988-91 RN C/K TRUCKS, 1990-91 L VANS, EQUIPPED WITH KELSEY HAYES BRAKE COMBINATION VALVE AND ANTI-LOCK BRAKES AND 1991 CAPRICE EQUIPPED WITH KELSEY HAYES BRAKE COMBINATION VALVE AND BOSCH ANTI-LOCK BRAKES


This bulletin describes a modification which must be made to existing tool J-35856 which must be used when pressure bleeding the brake system. J-35856 "Proportioning Valve Depressor" has been replaced and superseded by J-39177 "Combination Valve Pressure Bleeding Tool" for the Kelsey Hayes combination valve on the above mentioned cars and trucks.


IMPORTANT: Failure to modify or replace J35856 may result in an ineffective bleed or damage to the combination valve.

Figure 1-Bleed Valve Tool J-35856:

Dealers may order J-39177 to replace J-35856 or modify all J-35856 tools in the following manner (Figure 1).

1. Remove the red plastic handle from the tool.


2. Clamp the tool carefully but securely in a bench vise with the three prongs accessible.


3. File down the raised "dimple" from the center prong until the surface area is smooth.


The removal of the "dimple" is all that is necessary to modify the tool. The attached label should be applied to any modified J - 35856.