Komatsu 830E Shop Manual page 576

Before a compressor is dismissed as being seized, a
check for proper voltage to the coil should be per-
formed. In addition, the coil should be ohm checked for
proper electrical resistance. The coil should fall within
the following range:
12.0 ± 0.37 Ohms @ 68° F (20° C)
16.1 ± 0.62 Ohms @ 240° F (116° C)
The temperatures specified above are roughly typical
of a summer morning before first start-up and the heat
beside an engine on a hot day. At temperatures in
between those listed above, the correct resistance is
proportionate to the difference in temperature.
Servicing the Compressor Clutch
* RECOMMENDED TOOLS FOR COMPRESSOR
CLUTCH REMOVAL AND INSTALLATION
J-9399 Thin Wall Socket
**J-9403 Spanner Wrench
**J-25030 Clutch Hub Holding Tool
Clutch Plate and Hub Assembly
J-9401
Remover
J-8433 Pulley Puller
J-9395 Puller Pilot
***J-24092 Puller Legs
J-8092 Universal Handle
J-9481 Pulley and Bearing Installer
J-9480-01 Drive Plate Installer
J-9480-02 Spacer, Drive Plate Installer
*Tools are available though your local Kent-Moore dealer.
** These tools are interchangeable.
***For use on multiple groove pulleys.
Use the proper tools to remove and replace clutch
components. Using the recommended tooling
helps prevent damage to compressor components
during maintenance.
M9-20
Do not drive or pound on the clutch plate, hub
assembly, or shaft. Internal damage to the com-
pressor may result.
1. Remove the belt guard from the front of the air
conditioning compressor.
1. Belt Pulley
2. Clutch Hub/Drive Plate
2. Remove the drive belt from compressor belt pulley
(1, Figure 9-10).
1. Thin Wall Socket
2. Clutch Hub Holding Tool
Air Conditioning System
for HFC 134a Refrigerant
FIGURE 9-10.
3. Shaft
4. Locknut
FIGURE 9-11.
3. Clutch Hub
05/02 M09010