Parking Brake Shoe Drag
PARKING BRAKE SHOE DRAGINSPECT AND SERVICE PARKING BRAKE
CAUTION:
The EPB Module must be set into 'Mount Mode'; use IDS with DVD115 Patch File 4 or later.
CAUTION:
A Midtronics PSC-550 Vehicle Power Supply must be connected to the vehicle battery during IDS diagnosis / module programming.
1. Connect the Midtronics PSC-550 Vehicle Power Supply to the vehicle battery.
NOTE:
IDS must be loaded with latest DVD Patch File.
2. Connect the IDS to the vehicle and begin a new diagnostic session by entering the correct VIN for the current vehicle.
3. Place EPB Module into 'Mount Mode'.
4. Remove EPB 30A fuse 'LINK FL8' from the Battery Junction Box.
NOTE:
Global Technical Reference (GTR) lookup sequence is as follows:
^ GTR Home > NAS > Model > Service Information > Model Year > Workshop Manuals > 2: Chassis > 206: Brake Systems > 206-05: Parking Brake Actuation
5. Refer to Workshop Manual (GTR) Section 206-05 (70.40.09) to remove the parking brake shoes.
6. Inspect the general condition of the parking brake shoes, springs, and back plate:
^ Look for evidence of brake drag. This may be evident through excessive shoe lining or drum wear. There may also be evidence of heat build-up on the shoes, drums or other internal components.
^ Ensure shoe hold-down clips are not damaged.
^ Remove any build-up of brake dust from the drum / shoe interface. ('A' - Figure 1)
^ Inspect shoe lining minimum thickness (2.0 mm [0.08 in]).
> If there is evidence of damage due to heat build-up (brake shoe lining separation, significantly discolored discs), replace parking brake shoes, brake discs, and / or holddown clips as a separate claim.
CAUTION:
Do not over-compress the hold down clips during installation. Ensure parking brake shoes are held against the back plate.
NOTE:
Use Molyguard GS2039 (SYL500050) to grease the parking brake shoe / back plate platforms. ('B' - Figure 1)
7. Inspect parking brake cables:
^ Inspect cable ends for heat damage.
^ Check that the brake cables are correctly attached by releasing the outer cable retaining nuts from the back plates, and pulling on the cables. The cables should not detach from the brake.
^ Ensure the E-clips are installed to the outer brake cable ends in the correct groove. (Figure 2)
^ Install the outer cable retaining nuts and tighten to 8 Nm (6 lbf. ft).
^ If necessary, replace parking brake cables, without replacing the EPB Module, as a separate claim.
8. Refer to Workshop Manual (GTR) Section 206-05 (70.40.09) to install the rear brake discs and calipers.
9. Install EPB 30A fuse 'LINK FL8' into the Battery Junction Box.
CAUTION:
The parking brake shoe and lining adjustment procedure must be carried out completely.
10. Refer to Workshop Manual (GTR) Section 206-05: Parking Brake and Actuation (70.40.11) and perform the Parking Brake Shoe and Lining Adjustment procedure.
11. Use IDS to clear all DTCs from the EPB Module fault memory.