TRANSMISSION
TABLE OF CONTENTS
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TRANSMISSION
DIAGNOSIS AND TESTING ..................9
TRANSMISSION OIL COOLER FLOW
TESTING ..............................9
STANDARD PROCEDURE ..................10
FLUSHING COOLERS AND TUBES .........10
TRANSMISSION
DIAGNOSIS AND TESTING - TRANSMISSION
OIL COOLER FLOW TESTING
To determine proper transmission oil flow through
the oil cooler perform the following procedure:
(1) At the external cooler location, disconnect the
“from cooler” hose.
(2) Using Special Tool adaptors 6906-1-3 with a 9
mm (3/8 in.) transmission hose attached to one
adapter, connect Special Tool 8392 flow meter in-se-
ries with the oil cooler flow circuit (Fig. 1).
(3) Start engine and observe the flow meter gauge.
Refer to the following chart for specifications.
COOLER FLOW SPECIFICATION (Min.)
2.6 LPM (0.7 GPM)
(4) If oil flow is below minimum specifications, fur-
ther diagnosis must be performed.
(a) Perform Oil Pump Volume Check (Refer to 21
- TRANSMISSION/TRANSAXLE/AUTOMATIC -
42LE/OIL PUMP - STANDARD PROCEDURE).
(b) If oil pump volume is within specification, a
possible restriction in the cooler lines or cooler has
occurred.
(c) If oil pump volume is not within specification,
possible internal transmission restrictions, compo-
nent wear or damage has occurred. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC -
42LE - DIAGNOSIS AND TESTING)
Fig. 1 TRANSMISSION COOLER FLOW TEST
1 - SPECIAL TOOL 8392 4 - TRANS HOSE-9mm(3/89 I.D.)
2 - SPECIAL TOOL 6906-1-3 5 - FROM COOLER
3 - TO TRANS
PL TRANSMISSION 7s - 9
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