Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1986CAPRICE WAGON V8-305 5.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSBRAKE SIGNALTECHNICAL SERVICE BULLETINSPOWERMASTER BRAKE SYSTEM - SERVICE KITS
1986 Chevrolet Caprice Wagon V8-305 5.0L
Powermaster Brake System - Service Kits
1986 Chevrolet Caprice Wagon V8-305 5.0LSECTION Powermaster Brake System - Service Kits
87chevy18 REISSUE
Number: 87-125
Section: 5
Date: June, 1987
Subject: POWERMASTER SERVICE KITS
Model and Year: 1986 CAPRICE WAGON
TO: ALL CHEVROLET DEALERS
This bulletin cancels Chevrolet Dealer Service Bulletin 86-24 (Section 5) dated January, 1986, and revises Chevrolet Dealer Service Bulletin 87-125 (Section 5) dated April, 1987. All copies of 86-24 and 87-125 should be destroyed. Bulletin 87-125 Reissue provides additional information relating to repair parts available to Powermaster Brake Systems.
The following repair kits have been released to assist in servicing the Powermaster Brake units. The labor times indicated include time for the functional system check and diagnostic procedure.
Labor
Labor Time
Oper. Allow-
Part Number Description Number ance
18011279 Pump and Motor Assy. Pkg. H0980 .8
18014977 Pressure Switch Assy. Pkg. H0778 .4
18014978 Accumulator Assy. Pkg. H0985 .3
18013293 Reservoir --- --
Servicing procedures for these kits can be found in Section 5D4 of the 1986 Caprice Service Manual.
In addition to the repair kits, effective May, 1987 the warranty exchange unit became available as a regular service part.
Part Number Description
18013682 Powermaster Unit
Number: 87-125
Section: 5
Date: June, 1987
Subject: POWERMASTER SERVICE KITS
Model and Year: 1986 CAPRICE WAGON
TO: ALL CHEVROLET DEALERS
This bulletin cancels Chevrolet Dealer Service Bulletin 86-24 (Section 5) dated January, 1986, and revises Chevrolet Dealer Service Bulletin 87-125 (Section 5) dated April, 1987. All copies of 86-24 and 87-125 should be destroyed. Bulletin 87-125 Reissue provides additional information relating to repair parts available to Powermaster Brake Systems.
The following repair kits have been released to assist in servicing the Powermaster Brake units. The labor times indicated include time for the functional system check and diagnostic procedure.
Labor
Labor Time
Oper. Allow-
Part Number Description Number ance
18011279 Pump and Motor Assy. Pkg. H0980 .8
18014977 Pressure Switch Assy. Pkg. H0778 .4
18014978 Accumulator Assy. Pkg. H0985 .3
18013293 Reservoir --- --
Servicing procedures for these kits can be found in Section 5D4 of the 1986 Caprice Service Manual.
In addition to the repair kits, effective May, 1987 the warranty exchange unit became available as a regular service part.
Part Number Description
18013682 Powermaster Unit
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.