automatic transmission DODGE RAM 2003 Service Repair Manual

(55) Install the manual shift lever from the trans-
mission. Torque the retaining cross-bolt to 16 N´m
(140 in.lbs.).
INSTALLATION
(1) Check torque converter hub and hub drive flats
for sharp edges burrs, scratches, or nicks. Polish the
hub and flats with 320/400 grit paper and crocus
cloth if necessary. Verify that the converter hub
o-ring is properly installed and is free of any debris.
The hub must be smooth to avoid damaging pump
seal at installation.
(2) If a replacement transmission is being
installed, transfer any components necessary, such as
the manual shift lever and shift cable bracket, from
the original transmission onto the replacement trans-
mission.
(3) Lubricate oil pump seal lip with transmission
fluid.
(4) Align converter and oil pump.
(5) Carefully insert converter in oil pump. Then
rotate converter back and forth until fully seated in
pump gears.
(6) Check converter seating with steel scale and
straightedge (Fig. 53). Surface of converter lugs
should be at least 13mm (1/2 in.) to rear of straight-
edge when converter is fully seated.
(7) Temporarily secure converter with C-clamp.
(8) Position transmission on jack and secure it
with chains.
(9) Check condition of converter driveplate.
Replace the plate if cracked, distorted or damaged.
Also be sure transmission dowel pins are seatedin engine block and protrude far enough to
hold transmission in alignment.
(10) Apply a light coating of MopartHigh Temp
Grease to the torque converter hub pocket in the rear
pocket of the engine's crankshaft.
(11) Raise transmission (Fig. 54) and align the
torque converter with the drive plate and transmis-
sion converter housing with the engine block.
(12) Move transmission forward. Then raise, lower
or tilt transmission to align the converter housing
with engine block dowels.
(13) Carefully work transmission forward and over
engine block dowels until converter hub is seated in
crankshaft. Verify that no wires, or the transmission
vent hose, have become trapped between the engine
block and the transmission.
(14) Install two bolts to attach the transmission to
the engine.
(15) Install remaining torque converter housing to
engine bolts. Tighten to 68 N´m (50 ft.lbs.).
(16) Install transfer case, if equipped. Tighten
transfer case nuts to 35 N´m (26 ft.lbs.).
(17) Install rear support to transmission. Tighten
bolts to 47 N´m (35 ft.lbs.).
(18) Lower transmission onto crossmember and
install bolts attaching transmission mount to cross-
member. Tighten clevis bracket to crossmember bolts
to 47 N´m (35 ft.lbs.). Tighten the clevis bracket to
rear support bolt to 68 N´m (50 ft.lbs.).
(19) Remove engine support fixture.
(20) Connect gearshift cable to transmission.
Fig. 53 Checking Torque Converter Seating - Typical
1 - SCALE
2 - STRAIGHTEDGE
Fig. 54 Install Transmission
1 - ENGINE
2 - TRANSMISSION
21 - 510 AUTOMATIC TRANSMISSION - 45RFE/545RFEDR
AUTOMATIC TRANSMISSION - 45RFE/545RFE (Continued)

(21) Connect wires to solenoid and pressure switch
assembly (Fig. 55) connector, input (Fig. 56) and out-
put (Fig. 57) speed sensors, and line pressure sensor
(Fig. 58). Be sure transmission harnesses are prop-
erly routed.
CAUTION: It is essential that correct length bolts be
used to attach the converter to the driveplate. Bolts
that are too long will damage the clutch surface
inside the converter.(22) Install torque converter-to-driveplate bolts.
Tighten bolts to 31 N´m (270 in. lbs.).
(23) Install starter motor and cooler line bracket.
(24) Connect cooler lines to transmission.
(25) Install transmission fill tube.
(26) Install exhaust components, if necessary.
Fig. 55 Connect Transmission Solenoid
1 - TRANSMISSION
2 - TRANSMISSION SOLENOID/TRS ASSEMBLY
Fig. 56 Connect Input Speed Sensor
1 - TRANSMISSION
2 - INPUT SPEED SENSOR
Fig. 57 Connect Output Speed Sensor
1 - TRANSMISSION
2 - OUTPUT SPEED SENSOR
Fig. 58 Connect Line Pressure Sensor
1 - TRANSMISSION
2 - LINE PRESSURE SENSOR
DRAUTOMATIC TRANSMISSION - 45RFE/545RFE 21 - 511
AUTOMATIC TRANSMISSION - 45RFE/545RFE (Continued)

(27) Install the engine collar (Fig. 59) onto the
transmission and the engine. Tighten the bolts to 54
N´m (40 ft.lbs.).(28) Align and connect propeller shaft(s).
(29) Adjust gearshift cable if necessary.
(30) Install any skid plates removed previously.
(Refer to 13 - FRAMES & BUMPERS/FRAME/
TRANSFER CASE SKID PLATE - INSTALLATION)
(31) Lower vehicle.
(32) Fill transmission with MopartATF +4, Auto-
matic Transmission Fluid.
Fig. 59 Transmission Collar
1 - ENGINE
2 - ENGINE TO TRANSMISSION COLLAR
3 - TRANSMISSION
21 - 512 AUTOMATIC TRANSMISSION - 45RFE/545RFEDR
AUTOMATIC TRANSMISSION - 45RFE/545RFE (Continued)

SCHEMATICS AND DIAGRAMS
HYDRAULIC SCHEMATICS
HYDRAULIC FLOW IN PARK/NEUTRAL
DRAUTOMATIC TRANSMISSION - 45RFE/545RFE 21 - 513
AUTOMATIC TRANSMISSION - 45RFE/545RFE (Continued)

HYDRAULIC FLOW IN NEUTRAL OVER 8MPH
21 - 514 AUTOMATIC TRANSMISSION - 45RFE/545RFEDR
AUTOMATIC TRANSMISSION - 45RFE/545RFE (Continued)

HYDRAULIC FLOW IN REVERSE
DRAUTOMATIC TRANSMISSION - 45RFE/545RFE 21 - 515
AUTOMATIC TRANSMISSION - 45RFE/545RFE (Continued)

HYDRAULIC FLOW IN REVERSE BLOCK
21 - 516 AUTOMATIC TRANSMISSION - 45RFE/545RFEDR
AUTOMATIC TRANSMISSION - 45RFE/545RFE (Continued)

HYDRAULIC FLOW IN FIRST GEAR (FROM N OR OD)
DRAUTOMATIC TRANSMISSION - 45RFE/545RFE 21 - 517
AUTOMATIC TRANSMISSION - 45RFE/545RFE (Continued)

HYDRAULIC FLOW IN FIRST GEAR (AFTER LAUNCH FROM REST)
21 - 518 AUTOMATIC TRANSMISSION - 45RFE/545RFEDR
AUTOMATIC TRANSMISSION - 45RFE/545RFE (Continued)

HYDRAULIC FLOW IN FIRST GEAR (FROM K/D)
DRAUTOMATIC TRANSMISSION - 45RFE/545RFE 21 - 519
AUTOMATIC TRANSMISSION - 45RFE/545RFE (Continued)