LeSabre V8-307 5.0L VIN Y 4-bbl (1984)
Fluid Pan: Technical Service Bulletins
A/T- New Transmission Oil Pan, Gasket and Bolts
Bulletin 84-7200-4
Date April '84
Ref. No. 84-204-7200
SUBJECT:
NEW TRANSMISSION OIL PAN, GASKET AND BOLTS
MODELS AFFECTED:
ALL THM 200-4R TRANSMISSIONS
FIGURE 1 - TRANSMISSION OIL PAN
FIGURE 2 - HEX HEAD SCREW AND CONICAL WASHER ASSEMBLY
Beginning in January 1984, all THM 200-4R transmissions are being produced using a new transmission oil pan (Figure 1), cork gasket and special hex
bolts with conical washers (Figure 2). The new transmission oil pan has a continuous ribbed flange to reduce transmission oil leaks.
When servicing any THM 200-4R transmission for transmission oil pan leaks, refer to the following procedure:
Service Procedure:
1.
Diagnose source of leak to be certain leak is from the transmission oil pan area.
2.
If a leak is determined to be from this area:
A.
Remove the oil pan.
B.
Clean the case oil pan face (with solvent) and visually inspect the case oil pan surface for damage and/or presence of R.T.V. sealant (room
temperature vulcanizing sealant).
C.
Make sure all R.T.V. sealant or other gasket material is removed from the case oil pan face.
