Komatsu 830E Shop Manual page 579

CLUTCH ASSEMBLY INSTALLATION
1. Insert square key (1, Figure 9-13) into the keyway
in the clutch hub. Allow the key to protrude about
4.5 mm (0.18 in.) from the outer edge of the hub.
Use petroleum jelly to hold the key in place.
FIGURE 9-18.
1. Thin Wall Socket
2. Place the clutch assembly into position on the
compressor. Align the square key with the key-
way on the shaft.
M09010 05/02
2. Clutch Hub Holding
Tool
Air Conditioning System
for HFC 134a Refrigerant
3. Thread drive plate installer (1, Figure 9-18) onto
the shaft of the compressor. Spacer (2) should be
in place under the hex nut on the tool.
0.040 ± 0.017 in.
FIGURE 9-19.
4. Press the clutch onto the compressor using
installer (1). Continue to press the clutch plate
until a 2 mm (0.079 in.) gap remains between the
clutch friction surface and the pulley friction sur-
face. Refer to Figure 9-19.
NOTE: The outer threads of installer (J-9480-01) are
left handed threads.
5. IInstall locknut (4, Figure 9-10) and tighten the nut
until it seats. The gap should now measure 1.02 ±
0.043 mm (0.040 ± 0.017 in.). If the gap is not
within the specification, check for proper installa-
tion of the square key.
10. Install the drive belt onto the compressor. Ensure
that the proper tension on the belt is attained.
Refer to the belt tension chart in the appropriate
engine manual for the proper specifications.
11. After assembly is complete, burnish the mating
parts of the clutch by operating the air condition-
ing system at maximum load conditions with the
engine at high idle. Turn the air conditioning con-
trol "ON" and "OFF" at least 15 times for one sec-
ond intervals.
12. Install the belt guard if no further servicing is
required.
M9-23