Dodge RAM TRUCK 1500 1995 Service Manual page 1687

24 - 1 1 HEATING AND AIR CONDITIONING
urn
J8924-25
Fig. 8 Rotor Installer Set
J8924-26
Fig. 9 Tool Set Driver
bottoms against the compressor front housing hub.
Listen for a distinct change of sound during the tap­
ping process.
(8) Install external front housing snap ring.
(9) Check that original clutch shims are in place
on compressor shaft and install clutch plate. On the
diesel engine install shaftkey and use Shaft Protec­
tor Tool 6141-2, to insatll clutch plate on compressor
shaft (Fig. 10).
(10) Replace compressor shaft hex nut. Tighten the
hex nut to 14.4 N-m (10.5 ft. lbs.) torque.
(11) Check air gap with feeler gauge (Fig. 11). The
specification is 0.41-0.79 mm (0.016-0.031 inch). If air
gap is not consistent around the circumference,
lightly pry up at the minimum variations. Lightly
tap down at points of maximum variation.
J8924-27
Fig. 10 Clutch Plate installation
J8924-28
Fig. 11 Check Air Gap
The air gap is determined by the spacer
shims. When installing the original or a new
clutch assembly, try the original . shims first.
When installing a new clutch onto a compressor
that previously did not have a clutch, use 0.040,
0.020, and 0.005 shims from the clutch accessory
sack.
(12) If the air gap does ndt meet the specification
given, add or subtract shims as required.
CLUTCH BREAK-IN
After a new clutch has been installed cycle the A/C
clutch 20 times (5 sec. on and 5 sec. off). During this
procedure, set the system to the A/C mode, engine
RPM at 1500 - 2000 and high blower speed. This pro­
cedure (burnishing) will seat the opposing friction
surfaces and provide a higher clutch torque capabil­
ity.