A/T Oil Pan - Leaks

Number 83-T-65 Section 7 Date 12/83

Subject: TRANSMISSION OIL PAN LEAKS - ALL 200-200C (1983 AND PRIOR)

Figure 1:

Figure 2:

Beginning September 6th, 1983 a new transmission oil pan (see Figure 1) and hex head screw and conical washer assembly (see Figure 2) went into production for all THM 200C transmissions.

Refer to the chart below and verify serial and model numbers. If the serial number is prior to the number on the chart then follow this procedure.

MODEL SERIAL

BH 48567
OI 17716
CZ 1041
JY 1074
OR 1071
OU 1724

Service Procedure:

1. Diagnose source of leak to be certain leak is from the transmission oil pan area. (Refer to Dealer Service Information Bulletin 83-I-53, Section 7 for diagnosing transmission oil leaks).

2. If a leak is determined to be from the transmission oil pan area:

- Remove the oil pan and gasket.

- Clean the case oil pan face (with solvent) and visually inspect the case oil pan face for nicks and R.T.V. sealant (room temperature vulcanizing sealant). Make sure all R..T..V. sealant is removed from the case oil pan face.

Figure 3:

3. If the THM 200 transmission being serviced is a 1979 or earlier model verify which transmission oil screen is being used (see Figure 3). If the old oil screen is being used (Figure 3) it must be replaced with the new oil screen (Figure 3) provided in the service package.

Figure 2:

4. Replace the former oil pan (Figure 1) hex head screws (Figure 2) with new oil pan (Figure 2) and hex head screw and conical washer assemblies (Figure 2). Order Service package 8638929.

This service package contains the following:

1 - 8648160 - New Oil Pan
1 - 8648161 - Transmission Oil Pan Gasket
11 - 8643683 - Hex Head Screw and Conical Washer Assembly
1 - 8630789 - Screen Assembly Transmission Oil
1 - 8628300 - Gasket, Screen to Valve Body
1 - 8632952 - Instruction Sheet

These parts are also available separately.
Torque all hex head screws to 11.0 N-m (9.0 ft.lbs.) then re-torque all the hex head screws a second time to the same specifications as above. The second re-torque is important because the gasket material relaxes after the first tightening.