Voyager L4-153 2.5L SOHC Turbo (1989)
Technical Service Bulletin # 211690
Date: 900604
A-604 A/T Oil Cooler - Flushing & Flow Testing
Models
1989-1990 AA, AC, AG, AJ, AS, & AY Bodies
Subject
A-604 Transaxle Oil Cooler Flushing And Flow Testing
Index
TRANSMISSION
Date
June 4, 1990
No.
21-16-90
(C21-10-0)
P-1649
BODY CODE LEGEND
AA - ACCLAIM/SPIRIT/LEBARON
AC - DYNASTY/NEW YORKER LANDAU/SALON
AG - DAYTONA
AJ
- LEBARON COUPE/LEBARON CONVERTIBLE
AS - CARAVAN/GRAND CARAVAN/CARAVAN C/V
VOYAGER/GRAND VOYAGER/TOWN & COUNTY
AY -
IMPERIAL/NEW YORKER FIFTH AVENUE
Discussion
The purpose of this bulletin is to emphasize the IMPORTANCE OF PROPERLY FLUSHING AND FLOW TESTING THE TRANSAXLE OIL
COOLER SYSTEM FOLLOWING ANY A-604 REPAIR WHICH REQUIRES THE REMOVAL OR REPLACEMENT OF THE TRANSAXLE.
A clogged or restricted transaxle oil cooler system can be the cause of recurring transaxle failures. Restriction of transaxle fluid flow through the oil
cooler system can result in overheating of the fluid and reduce lubrication flow to internal rotating parts.
Three types of transaxle oil cooler systems are used; oil to air, oil to engine coolant and a combination oil to air and oil to engine coolant. When flushing
a cooler system with a combination of both, it will be necessary to flush each cooler separately. Vehicles equipped with the Bypass valve, installed from
Recall 281-T or Technical Service Bulletin 21- 28-89 must have the Bypass valve cleaned separately.
This bulletin should be reviewed with all service personnel performing repairs to the A-604 transaxle.
NOTE:
THERE ARE TWO DIFFERENT FLUSHING PROCEDURES FOR VEHICLES EQUIPPED WITH THE DIFFERENT TYPE COOLER
SYSTEMS. MAKE SURE YOU USE THE PROCEDURE THAT APPLIES TO THE VEHICLE SYSTEM YOU ARE WORKING ON.
UNDER NO CIRCUMSTANCES SHOULD COMPRESSED AIR BE SUBSTITUTED FOR THE FLUSHING PROCEDURE OUTLINED BELOW.
Tools and Material Required to Flush System
Hand suction gun. Mineral spirits. Shop air and blow gun. Gallon container ATF fluid.
Parts Required
Use only on vehicles equipped with pressure actuated bypass valve.
1 - Tie Strap
PN 6016076
1 - Tie Strap
PN 6016240
Flushing Procedure
FLUSHING PROCEDURE: FOR VEHICLES EQUIPPED WITH OIL TO AIR COOLER AND/OR VEHICLES EQUIPPED WITH OIL TO
ENGINE COOLANT COOLER.