Park Brake Adjustment
Adjustment Check Procedure
Caution
Ensure that the vehicle is properly supported and squarely positioned.
To help avoid personal injury when a vehicle is on a hoist, provide additional support
for the vehicle on the opposite end from which the components are being removed.
Notice
On new vehicles (less than 50 miles) and on vehicles which have just had the
rear brake serviced, before performing Park Brake Adjustment procedures, apply and
release the brake pedal 20 times. This allows the adjuster to position the brake linings
and prevents premature wear of the brake linings due to improper park brake adjustment.
- Raise the vehicle on a hoist.
- There should be no drag at the rear wheels with the park brake lever in
the rest position.
- Pull the park brake lever to the fourth click. There should be heavy brake
drag to no rotation at both the rear wheels when turned by hand.
Important
If both rear wheels do not exhibit similar drag in step 3, check for
damaged or incorrectly installed drum brake assembly installation of drum assembly
components, park brake cables, and/or park brake lever assembly. The park brake
is adjusted correctly if it meets the specifications explained in steps 2
and 3.
- Adjust if necessary. Refer to
Park Brake Adjustment
.
Adjustment Procedure
Notice
On new vehicles (less than 50 miles) and on vehicles which have just had the
rear brake serviced, before performing Park Brake Adjustment procedures, apply and
release the brake pedal 20 times. This allows the adjuster to position the brake linings
and prevents premature wear of the brake linings due to improper park brake adjustment.
- Lift the park brake lever.
- Remove the screw on the right-hand side of the park brake cover. Remove
the cover by sliding it forward.
Caution
R-134a service equipment or vehicle a/c systems should not be pressure tested
or leak tested with compressed air. Some mixtures of air/R-134a have been
shown to be combustible at elevated pressures. These mixtures are potentially dangerous
and may result in fire or explosion causing injury or property damage. Additional
health and safety information may be obtained from refrigerant and lubricant manufacturers.
- Raise the vehicle on a hoist.
- Pull the park brake lever to the first click.
- Tighten the adjuster
nut until moderate drag is felt at both rear wheels when turned by hand.
Important
After installation of any new park brake system component(s), the park brake
system must be set prior to performing final park brake adjustment. To set park
brake system after performing initial adjustment, pull up on park brake lever three
or four times with approximately 445 N (100 lbs) of force. It will require approximately
445 N (100 lbs) of force to reach the twelfth or thirteenth click position after
initial adjustment.
- Apply and release the park brake several times. There should be no drag when
the park brake lever is in the rest position.
- Pull the park brake lever to the first click. There should be moderate
drag at both rear wheels when turned by hand.
- If necessary, repeat steps 5 through 7 until the adjustment
is correct.
Notice
Do not overtighten screw or it may pull through cover.
Important
If both rear wheels do not exhibit similar drag in steps 5 through 7,
check for damaged or incorrectly installed drum brake assembly components, park
brake cables, and/or park brake lever assembly. Correct as necessary; return to
step 5 of this procedure.
- Install the park brake cover. Secure with the screw on right hand-side of cover.