Komatsu 830E-AC Shop Manual page 629

22. Screw the adjusting bolt (1, Figure 6-32) into the
adjusting collar finger tight, until fully seated into
the parking piston.
23. Remove the safety wire.
24. Press a new parking piston boot into each cali-
per housing until fully seated. Snap the inner lip
of the parking piston boot into the groove of the
parking piston adjusting bolt.
NOTE: The end plates have left and right orientation.
Verify that the end plates are correctly installed to
match the contour of each brake lining backing plate.
Verify that the lining assembly slides freely in the end
plates and is not binding.
FIGURE 6-32. PARK PISTON
1. Parking Piston Adjust-
ing Bolt
J06025 10/06
2. Caliper
Armature Speed Rear Disc Brakes
25. Install end plates (2, Figure 6-33) and end plate
cap screws into each caliper half. Tighten the
cap screws to 515-624 N·m (380-460 ft lb).
26. Install a new lining assembly (1) into the caliper
half. Position the threaded hole into each lining
assembly backing plate, to align with the hole in
the parking piston adjusting bolt.
27. Secure the lining assembly to the caliper hous-
ing using safety wire so that it cannot move.
Secure the lining assembly to the caliper housing
using safety wire so that it cannot move. Move-
ment of the lining assembly after the next steps
will affect the parking piston adjustment which
may cause the brake to drag after installation.
The lining must remain tight against the caliper
housing until the brake is installed onto the
truck.
FIGURE 6-33. END PLATES
1. Brake Lining 2. End Plate
J6-25