Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Brake Master Cylinder: All Technical Service Bulletins
Brake Master Cylinder Cover - Leakage
CORPORATE NUMBER: 665003R NUMBER: 86-T-196
GROUP:
5-Brakes
IMPORTANT - All Service Personnel Should Read
DATE:
November, 1986
SUBJECT:
BRAKE MASTER CYLINDER COVER LEAKAGE
MODELS:
1985-1986 M, G, AND P MODELS EQUIPPED WITH GASOLINE ENGINES
THIS BULLETIN CANCELS TRUCK SERVICE BULLETIN 86-T-183 ALL COPIES OF 86-T-183 SHOULD BE DESTROYED;
THEY CONTAIN AN INCORRECT PART NUMBER.
FIGURE NO. 1 - BRAKE MASTER CYLINDER ASSEMBLY
In the event the brake master cylinder cover does not appear to be sealing properly, the cover should be inspected for the following:
^
Bowed or deformed edges on the reservoir cover.
^
Cracked reservoir cover.
^
Unsnapped reservoir cover.
1.
If any of these conditions are noted, the reservoir cover and diaphragm assembly should be removed and discarded.
Note:
Clean the cover before removal to prevent dirt from entering the system.
2.
Refill the reservoir with brake fluids Delco Supreme II DOT-3, P/N 1052535, or equivalent
3.
Install kit, P/N 18014184, which includes a new cover and diaphragm assembly.
^
Inspect diaphragm to assure that is is completely seated in cover.
^
Make sure the cover and diaphragm assembly is firmly snapped to the reservoir.
