Chrysler 1998 Voyager Service Manual page 1639

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GENERAL INFORMATION
POWER TRANSFER UNIT . . . . . . . . . . . . . . . . 165
DIAGNOSIS AND TESTING
FLUID LEAK DIAGNOSIS . . . . . . . . . . . . . . . . . 167
SEAL IDENTIFICATION . . . . . . . . . . . . . . . . . . . 165
REMOVAL AND INSTALLATION
DIFFERENTIAL CARRIER SEAL . . . . . . . . . . . . 170
END COVER BALL BEARING . . . . . . . . . . . . . . 178
END COVER SEAL . . . . . . . . . . . . . . . . . . . . . . 169
HALF SHAFT INNER SEAL . . . . . . . . . . . . . . . . 175
INPUT SHAFT COVER SEAL . . . . . . . . . . . . . . 174
INPUT SHAFT END SEAL . . . . . . . . . . . . . . . . . 177
GENERAL INFORMATION
POWER TRANSFER UNIT
The Power Transfer Unit (P.T.U.) is attached to a
modified automatic transaxle case where the right
half shaft extension housing would normally be
located. The Transfer Unit provides the power to the
rear wheels through a hypoid ring gear and pinion
set.
The Power Transfer Unit is sealed from the tran-
saxle and has its own oil sump. The Unit uses SAE
85W-90 gear lubricant and holds 1.15 liters (1.22
quarts).
The Power Transfer Unit fill plug is located on the
end cover (Fig. 1). Do not mistake the black plas-
tic inspection plug located on the P.T.U. case
for the fill plug.
Fig. 1 Fill Plug Location
TRANSAXLE AND POWER TRANSFER UNIT
POWER TRANSFER UNIT
INDEX
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ADJUSTMENTS
SPECIFICATIONS
SPECIAL TOOLS
bearings, case, covers, or pinion carrier fail the entire
unit must be replaced.
DIAGNOSIS AND TESTING
SEAL IDENTIFICATION
location is critical. Refer to (Fig. 2), (Fig. 3), (Fig. 4)
and (Fig. 5) for correct seal name and location.
INPUT SHAFT SEAL . . . . . . . . . . . . . . . . . . . . . 169
OUTER HALF SHAFT SEAL . . . . . . . . . . . . . . . 177
POWER TRANSFER UNIT (P.T.U.) . . . . . . . . . . 167
POWER TRANSFER UNIT OUTPUT SEAL . . . . 171
REAR COVER O-RING . . . . . . . . . . . . . . . . . . . 171
OUTPUT FLANGE SHIM SELECTION . . . . . . . . 180
TORQUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
SDP POWER TRANSFER UNIT . . . . . . . . . . . . 181
Service of the Power Transfer Unit is limited to:
• Seals
• Gaskets
• One ball bearing
• Output flange
If the ring gear and pinion, any tapered roller
For accurate seal diagnosis, repair seal name and
Fig. 2 Seal Location
21 - 165
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