Info - Release of Revised Park Brake Pump/Reservoir Assembly
| Subject: | Release of Revised Park Brake Pump/Reservoir Assembly |
| Models: | 1999-2000 Chevrolet and GMC C6-7 Series Conventional Medium Duty Models |
| 1997-2000 Chevrolet and GMC F6-7 T Series Medium Duty Tilt Models |
| With Power Operated Parking Brake (RPO J71) |
| Built Prior to October 7, 1999 and the following VIN Breakpoints: |
Division | VIN Breakpoint |
|---|---|
Chevrolet | YJ506784 |
GMC | YJ506765 |
A revised park brake pump assembly and reservoir kit have been released and are available as a service replacement for parking brake systems (RPO J71) that may become contaminated by water or moisture.
Park Brake Pump w/Reservoir- Former F Model (Typical)
Park Brake Pump Reservoir -- Current and Former
This park brake pump assembly incorporates a four-point reservoir mount. This new design features a four fastener reservoir attachment around the O-ring seal (1). This new design is different from the previous single-point reservoir attachment (2). The seal area of the reservoir has also been redesigned. These changes should provide improved sealing in the reservoir attachment area.
C-Model Conventional Trucks can be upgraded by just replacing the reservoir. F Model tilt trucks will require a complete pump/reservoir assembly upgrade. The pump O-ring seal, P/N 15156687, is also available separately as a service part. Refer to the parts information listed below.
Parts Information
Part Number | Description |
|---|---|
15743820 | Pump Asm., Park Brk (w/motor) (C Models) |
12478148 | Reservoir Kit, Park Brk Pump (includes reservoir, cap, fasteners, and O-ring seal) (C Models) |
15743821 | Pump Asm., Park Brk (w/motor) (F Model Tilt) |
12478149 | Reservoir Kit, Prk Brk Pump (includes reservoir, cap, fasteners, and O-ring) (F Model Tilt) |
15156687 | Seal, Park Brk Pump (O-ring) |
Parts are currently available from GMSPO.
