Komatsu 830E-AC Shop Manual page 612

Dump truck, serial numbers a30001-a30035
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CALIPER
Disassembly
1. Open all bleeder screws and allow the fluid to
drain from the assembly into an approved con-
tainer.
2. Plug all openings to prevent contamination.
Thoroughly clean the exterior of the brake
assembly with an approved solvent.
3. Place the assembly, with the housing opening
down, onto a service bench that has sufficient
load bearing capacity.
4. Use a suitable Allen wrench to remove plug (3,
Figure 6-4) from the center of the parking piston
cap (1).
FIGURE 6-4. CALIPER
1. Parking Piston Cap
2. Spanner Wrench
Holes
5. Use a long 3/16-in. Allen wrench through the
hole in the center of the parking piston cap to
loosen the shoulder bolt that attaches the park-
ing piston adjusting bolt to the lining assembly.
J6-8
3. Plug
Armature Speed Rear Disc Brakes
6. Separate the two lining end plates from the cali-
per housing half by removing the six cap screws
(1, Figure 6-5), three from each end plate.
FIGURE 6-5. END PLATE
1. Cap Screws
7. Remove the brake lining.
8. Use a suitable spanner wrench (Figure 6-6) to
remove the parking piston cap. Two holes in
each cap are provided for this purpose.
FIGURE 6-6. SPANNER WRENCH
1. 101.5 mm (4 in.)
2. Wrench
2. 6.35 mm (0.25 in.) Dia.
10/06 J06025

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