Parking Brake Lining Clearance and Lever Travel Adjustment on Isuzu Vehicles

This guide explains how to adjust the parking brake lining clearance and lever travel on Isuzu vehicles.

ISUZU TRUCK DIAGNOSTIC KIT (MX2) with ISUZU IDSS 2019V G-IDSS and E-IDSS Software

Adjusting the Parking Brake Lining Clearance

1. Jack Up the Vehicle:
   • Raise the rear axle until the wheels can turn freely.
     
2. Remove Check Hole Cover:
   • Remove one of the two check hole covers from the parking brake drum.
3. Align Check Hole:
   • Rotate the brake drum to align the check hole with the adjusting screw.
4. Center the Brake Shoes:
   • Move the camshaft lever from side to side several times to center the brake shoes.
5. Adjust the Brake Shoes:
   • Insert a screwdriver into the check hole.
   • Rotate the adjusting screw by pushing it upward until the brake shoes begin to drag on the drum.
     
6. Back Off the Adjusting Screw:
   • Back off the adjusting screw the specified number of notches to achieve the correct clearance.
     
7. Reinstall Check Hole Cover:
   • Reinstall the check hole cover.
8. Lower the Vehicle:
   • Lower the rear wheels to the floor.

Adjusting the Parking Brake Lever Travel

1. Set and Release the Parking Brake Lever:
   • Fully set and release the parking brake lever several times.
   • Leave the parking brake lever in the released position.
2. Loosen the Control Wire Lock Nut:
   • Loosen the parking brake control wire lock nut (1).
3. Adjust Lever Travel:
   • Turn the adjuster (2) to adjust the lever travel to the specified notches.
     
4. Retighten the Lock Nut:
   • Retighten the control wire lock nut (1).
5. Check Lever Travel:
   • Check the parking brake lever travel, measured in notches, to ensure proper adjustment.

Reference Diagram

• Legend:
  1. Screwdriver
  2. Adjusting screw
  3. Brake drum
  4. Brake shoe
  5. Clearance
  6. Direction of brake shoe expansion (for 178 mm, 190 mm)
  7. Reinstall check hole cover