Diagnosis And Testing (Continued) - Dodge ram truck 3500 1996 Service Manual

21 - 274 AUTOMATIC TRANSMISSION—46/47RE
D I A G N O S I S A N D T E S T I N G ( C o n t i n u e d )
BR
CONDITION POSSIBLE CAUSES CORRECTION
6. Valve Body Manual Lever Shaft
Seal Leaks/Worn.
7. Rear Bearing Access Plate Leaks.
8. Gasket Damaged or Bolts are
Loose.
9. Adapter/Extension Gasket
Damaged Leaks/Damaged.
10. Neutral Switch Leaks/Damaged.
11 Converter Housing Area Leaks.
12. Pump Seal Leaks/Worn/
Damaged.
13. Torque Converter Weld
Leak/Cracked Hub.
14 Case Porosity Leaks.
6. Replace shaft seal.
7. Replace gasket. Tighten screws.
8. Replace bolts or gasket or tighten
both.
9. Replace gasket.
10. Replace switch and gasket.
11. Check for leaks at seal caused
by worn seal or burr on converter
hub (cutting seal), worn bushing,
missing oil return, oil in front pump
housing or hole plugged. Check for
leaks past O-ring seal on pump or
past pump-to-case bolts; pump
housing porous, oil coming out vent
due to overfill or leak past front band
shaft access plug.
12. Replace seal.
13. Replace converter.
14. Replace case.
NOISY OPERATION IN FOURTH
GEAR ONLY
1. Overdrive Clutch Discs, Plates or
Snap Rings Damaged.
2. Overdrive Piston or Planetary
Thrust Bearing Damaged.
3. Output Shaft Bearings Scored/
Damaged.
4. Planetary Gears Worn/Chipped.
5. Overdrive Unit Overrunning
Clutch Rollers Worn/Scored.
1. Remove unit and rebuild clutch
pack.
2. Remove and disassemble unit.
Replace either thrust bearing if
damaged.
3. Remove and disassemble unit
Replace either bearing if damaged.
4. Remove and overhaul overdrive
unit.
5. Remove and overhaul overdrive
unit.
SERVICE PROCEDURES
FLUID IEWEI CHEC1
Transmission fluid level should be checked monthly
under normal operation. I f the vehicle is used for
trailer towing or similar heavy load hauling, check
fluid level and condition weekly. Fluid level is
checked with the engine running at curb idle speed,
the transmission in NEUTRAL and the transmission
fluid at normal operating temperature.
FLUID LEVEL CHECK PROCEDURE
(1) Transmission fluid must be at normal operat­
ing temperature for accurate fluid level check. Drive
vehicle i f necessary to bring fluid temperature up to
normal hot operating temperature of 82°C (180°F).
(2) Position vehicle on level surface.
(3) Start and run engine at curb idle speed.
(4) Apply parking brakes.
(5) Shift transmission momentarily into all gear
ranges. Then shift transmission back to Neutral.
(6) Clean top of filler tube and dipstick to keep
dirt from entering tube.
(7) Remove dipstick (Fig. 22) and check fluid level
as follows:
(a) Correct maximum level is to MAX arrow
mark. Correct acceptable level is to O K mark in
Crosshatch area.
(b) Incorrect level is at or below M I N line.