Chrysler 1991 Service Manual Supplement page 138

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AIR CONDITIONING (5.9L DIESEL) 24 - 5
(8) Install external front housing snap ring with
spread type snap ring pliers.
(9) Install front plate assembly.
• Check that original clutch shims are in place on
compressor shaft.
• Replace compressor shaft key.
• Align front plate keyway to compressor shaft key.
(10) Using shaft protector, tap front plate to shaft
until it has bottomed to the clutch shims (Fig. 12).
Listen for a distinct change of sound during the tap-
ping process.
J8924-27
Fig. 12 Install Front Plate to Shaft
(11) Replace shaft hex nut. Tighten the hex nut to
37 N*m (27 ft. lbs.) torque.
(12) Check air gap with feeler gauge. The specifi-
cation is 0.406-0.787 mm (0.016-0.031 inch). I f air
gap is not consistent around the circumference,
lightly pry up at the minimum variations (Fig. 13).
Lightly tap down at points of maximum variation.
The air gap is determined by the spacer shims.
When installing the original or a new clutch as-
sembly, try the original shims first. When install-
ing 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.
(13) I f the air gap does not meet the specification
given, add or subtract shims as required.
COIPiESSOl SHIFT SEAL
REMOVAL
(1) Insert the 2 pins of the front plate spanner into
any 2 threaded holes of the clutch front plate (Fig.
2). Hold clutch plate stationary. Remove hex nut
with 19 mm (3/4 inch) socket.
J8924-28
Fig. 13 Check Air Gap
(2) Remove clutch front plate using puller (Fig. 3).
Align puller center bolt to compressor shaft. Thumb
tighten the 3 puller bolts into the threaded holes.
(3) Turn center bolt clockwise with 19 mm (3/4
inch) socket until front plate is loosened.
Shaft seal replacement should be done on the
bench. Never use any old parts of the shaft seal
assembly. Rebuild the complete assembly.
(4) Using either of the snap ring tools, insert the
tool points into the 2 holes of the felt ring metal re-
tainer and lift out the felt ring (Fig. 14).
FELT RING J8924-29
Fig. 14 Remove Felt Ring
(5) Remove the clutch shim. Use O-ring hook and a
small screwdriver to prevent shim from binding on
shaft (Fig. 15).