Komatsu 830E Shop Manual page 577

3. Remove locknut (4) using thin wall socket (1, Fig-
ure 9-11) or the equivalent. Use clutch hub hold-
ing tool (2), spanner wrench (J-9403), or the
equivalent to hold clutch plate (3) while removing
the locknut. It is recommended that the locknut be
replaced after it has been removed.
FIGURE 9-12.
1. Clutch Assembly
4. Thread clutch plate and hub assembly remover (2,
Figure 9-12) into the hub of clutch assembly (1).
Hold the body of the remover with a wrench and
tighten the center screw to pull the clutch plate
and hub assembly from the compressor.
FIGURE 9-13.
1. Square Key
M09010 05/02
2. Clutch Plate & Hub
Assembly Remover
2. Keyway in Shaft
Air Conditioning System
for HFC 134a Refrigerant
5. Remove square key (1, Figure 9-13) from the key-
ways.
FIGURE 9-14.
1. Clutch Hub
6. Inspect the friction surface on the clutch hub and
the friction surface on the pulley. Scoring on the
friction surfaces is normal. DO NOT replace
these components for this condition only.
Inspect the steel friction surface on the clutch and
ensure that it is not damaged by excessive heat.
Inspect the other components near the clutch for
damage due to heat. If signs of excessive heat are
evident, it may be necessary to replace the com-
pressor. Excessive heat may cause leakage in the
seals and damage to internal components as well
as external components.
2. Pulley
M9-21