2003 DODGE TOWN AND COUNTRY Service Manual

TPMS reset fuel tank removal low beam adblue ECU climate settings

Page 1449 of 2177

DODGE TOWN AND COUNTRY 2003 Service Manual Power Transfer Unit Components
21 - 2 POWER TRANSFER UNITRS
POWER TRANSFER UNIT (Continued)
ProCarManuals.com

Page 1450 of 2177

DODGE TOWN AND COUNTRY 2003 Service Manual OPERATION
The Transfer Unit provides the power to the rear
wheels through a hypoid ring gear and pinion set.
DIAGNOSIS AND TESTING
SEAL IDENTIFICATION
For accurate seal diagnosis, repair seal name and

OPERATION
The Transfer Unit provides the power to the rear
wheels through a hypoid ring gear and pinion set.
DIAGNOSIS AND TESTING
SEAL IDENTIFICATION
For accurate seal diagnosis, repair seal name and
location is critical. Refer to (Fig. 1), (Fig. 2), (Fig. 3)
and (Fig. 4) for correct seal name and location.
FLUID LEAK DIAGNOSIS
When diagnosing fluid leaks on the Power Transfer
Unit two weep holes are provided to diagnose certain
seal leaks. These holes are located on the bottom side
of the assembly (Fig. 5).
If fluid leak is detected from either weep hole, seal
replacement is necessary.Do not attempt to repair
the leak by sealing weep holes,they must be kept
clear of sealants for proper seal operation.
If fluid is leaking from weep hole A (Fig. 5) the
type of fluid leaking will determine which seal needs
to be replaced. If the fluid leaking is red in color
(transmission fluid) this indicates that the Transmis-
sion differential carrier seal should be replaced. If
the fluid leaking is light brown (gear lube) this indi-
cates that the Power Transfer Unit input seal should
be replaced. For replacement of these seals refer to
Power Transfer Unit Service Procedures.
1 - PLUG 18 - CASE-PTU 35 - SHIM
2 - WASHER FLAT 19 - PINION-PTU 36 - TAPERED ROLLER BEARING
3 - SEAL RING 20 - O-RING 37 - SHAFT ASSY. FRONT L.H.
4 - SNAP RING 21 - SHIM 38 - SEAL RING
5 - BALL BEARING 22 - TAPERED ROLLER BEARING 39 - OIL WIPER
6 - SEAL RING 23 - COVER-PTU CASE REAR 40 - RETAINER DIFFERENTIAL BEARING
7 - COVER-PTU CASE END 24 - FLANGE TUBE-PTU-OUTPUT ASSY. 41 - SHAFT DIFFERENTIAL PINION
8 - TAPERED ROLLER BEARING 25 - LOCK NUT-HEX FLANGE 42 - PIN
9 - SEAL RING 26 - O- RING 43 - CASE DIFFERENTIAL
10 - SEAL RING 27 - RETAINER PLATE 44 - TAPERED ROLLER BEARING CONE
11 - HEX HEAD SCREW 28 - O-RING 45 - SEAL RING
12 - SHAFT-PTU INPUT 29 - BRACKET 46 - SEAL RING
13 - GEAR-PTU RING 30 - THRUST WASHER 47 - PLUG
14 - TROUGH-PTU (RT.) 31 - SIDE GEAR-DIFFERENTIAL 48 - O-RING
15 - TROUGH-PTU (LT.) 32 - FINAL DRIVE GEAR 49 - SHIM
16 - TAPERED ROLLER BEARING 33 - PINION DIFFERENTIAL 50 - MAGNET
17 - HEX HEAD SCREW 34 - WASHER DIFFERENTIAL PINION 51 - DOWEL
52 - SHAFT ASSY. FRONT R.H.
53 - HEX HEAD SCREW
Fig. 1 Seal
1 - INPUT SHAFT
2 - P.T.U. CASE
3 - MAGNET
4 - INPUT SHAFT END SEAL
5 - OUTPUT SHAFT
6 - RING GEAR
7 - REAR COVER
Fig. 2 Seal Location
1 - REAR COVER
2 - END COVER
3 - OUTER HALFSHAFT SEAL
4 - P.T.U. CASE
5 - P.T.U. OUTPUT SEAL
RSPOWER TRANSFER UNIT21-3
POWER TRANSFER UNIT (Continued)
ProCarManuals.com

Page 1451 of 2177

DODGE TOWN AND COUNTRY 2003 Service Manual If fluid is leaking from weep hole B (Fig. 5) the
type of fluid leaking will determine which seal is
leaking. If the fluid leaking is red in color (transmis-
sion fluid) this indicates that the input

Page 1452 of 2177

DODGE TOWN AND COUNTRY 2003 Service Manual (3) Fluid level should be within 3/16º from bottom
of inspection hole. Add MopartGear and Axle Lubri-
cant 80W-90 as necessary with suitable suction gun
(Fig. 7).
(4) Install inspection plug and torq

Page 1453 of 2177

DODGE TOWN AND COUNTRY 2003 Service Manual (4) Remove propeller shaft assembly (Fig. 10).
(Refer to 3 - DIFFERENTIAL & DRIVELINE/PRO-
PELLER SHAFT - REMOVAL)
(5) Remove cradle plate (Fig. 11).
(6) Remove the Power Transfer Unit mounting
bracke

Page 1454 of 2177

DODGE TOWN AND COUNTRY 2003 Service Manual ADJUSTMENTS
OUTPUT FLANGE SHIM SELECTION
This procedure is used when the output flange is
replaced. Replacement of the output flange requires
installation of the correct size shim to maintain bear-
in

ADJUSTMENTS
OUTPUT FLANGE SHIM SELECTION
This procedure is used when the output flange is
replaced. Replacement of the output flange requires
installation of the correct size shim to maintain bear-
ing preload.The shim must protrude from the
new output flange the same distance that the
original shim protruded from the original
flange.
(1) Stand the original output flange on end with
shim side pointing up.
(2) Place original shim into groove in top of flange.
(3) Place a straight edge across the shim.
(4) Using feeler gauge, measure the distance
between the straight edge and the top of the flange
(Fig. 15). Record this measurement.
(5) Repeat steps Step 1 through Step 4using the
new flange and the original shim.Record this
measurement.
(6) If measurements are not equal, use a new shim
that protrudes from new output flange. Make sure it
protrudes the same amount.
(7) For Example: The original shim protrudes
0.075 inch from the original output flange. Place the
original shiminto the new output flange. The pro-
trusion of the shim in the new flange is 0.085 inch.
This indicates that a 0.010 inch thinner shim is
required to maintain the original protrusion.(8) Install output flange and torque flange nut to
244 N´m (180 ft. lbs.).
(9) Check the turning torque of the pinion before
installing the rear cover into the P.T.U. The turning
torque should be between 2.0 N´m and 2.5 N´m (17
in. lbs. and 22 in. lbs.).
SPECIFICATIONS
TORQUE
DESCRIPTION...................TORQUE
End Cover................ 28N´m(250 in. lbs.)
Fill Plug................. 27N´m(240 in. lbs.)
Flange Nut............... 162N´m(120 ft. lbs.)
Inspection Plug............ 20N´m(180 in. lbs.)
Rear Cover............... 28N´m(250 in. lbs.)
Ring Gear................. 94N´m(70ft.lbs.)
Fig. 14 P.T.U. Upper Mounting Bolts
1 - P.T.U. UPPER MOUNTING BOLTS
2 - P.T.U.
Fig. 15 Output Flange Shim Measurement
1 - MEASURE THIS DIMENSION
2 - SHIM
3 - O-RING
4 - OUTPUT FLANGE
RSPOWER TRANSFER UNIT21-7
POWER TRANSFER UNIT (Continued)
ProCarManuals.com

Page 1455 of 2177

DODGE TOWN AND COUNTRY 2003 Service Manual SPECIAL TOOLS
SDP POWER TRANSFER UNIT
5049-a Seal Puller
5065 Bearing Installer
6514 Bearing Remover
6522 Bearing Remover
7794-a Bearing Remover
C-4171 Handle
C-4171-2 Handle
C-4657 Seal Installer
MD9

Page 1456 of 2177

DODGE TOWN AND COUNTRY 2003 Service Manual DIFFERENTIAL CARRIER SEAL
REMOVAL
The Power Transfer Unit must be removed from
the vehicle to replace this seal.
(1) Remove P.T.U. from vehicle.
(2) Use a pry bar to remove seal from retainer
plate (F

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