LO and Reverse Clutch Assembly

FIGURE 7 - LO & REVERSE CLUTCH ASSEMBLY:

FIGURE 8 - LO & REVERSE CLUTCH SPACER PLATE SELECTION CHART:

FIGURE 9 - REAR OF CASE:

FIGURE 10 - PISTION AND SKIRT:

TRANSMISSION APPLICATIONS: SUBJECT:

1987 THM 700-R4 (MD8) New Lo And Reverse Clutch Assembly


TRANSMISSION MODELS:

All Models


CHANGE TO ASSEMBLY COMPONENTS: (Figures 7, 8, 9 & 10)

New lo and reverse clutch assembly for all models that contain:

^ New lo and reverse clutch wave plate (682B)

^ 5 lo and reverse clutch plate assemblies (fiber)

^ 4 lo and reverse clutch plates (steel)

^ New selective spacer plate (682A)

^ New retainer and ball assembly (106)

- added to reverse apply passage in rear of case (Figure 9)

^ New lo and reverse clutch piston with shorter apply skirt (Figure 10)


Procedure for selection of the lo and reverse selective backing plate (Figure 7)

1. On a flat work surface, stack up the following lo and reverse clutch assembly parts:

- 1 waved plate

- 5 fiber plates and four steel plates (682), starting with one fiber plate and alternating with a steel plate

- lo and reverse clutch support assembly (679)

2. Apply an evenly distributed load to the top of the lo and reverse support assembly (679). Light pressure (5 lbs.) on the lo and reverse support assembly (679) will provide the correct dimension for measurement. (CAUTION: Excessive pressure will start to flatten the wave plate resulting in an inaccurate measurement.)

3. Measure height of clutch pack from work surface to the top of lo and reverse clutch support (679). Refer to Figure 7, Dimension D.

4. Use dimension "D" (Figure 8) to select proper thickness of the selective spacer plate for assembly.

5. Install the proper selective spacer plate between the wave plate and first fiber clutch plate with the identification facing up.

6. The overall height for dimension "D" with the selective spacer plate included should be 30.515 mm - 31.401 mm (1.20" - 1.24").

FIGURE 8 - LO & REVERSE CLUTCH SPACER PLATE SELECTION CHART:

SERVICE ACTION:
The new lo and reverse clutch assembly components may be used on all 1982 through 1987 transmissions only if all the new service parts and procedures for selection of the clutch pack clearance are used during assembly.


SERVICE PARTS INFORMATION:

Part Number Description

Lo & Reverse Clutch Spacer Plate (Selective)

8667584 Identification 4 - Refer to Figure 8

8667585 Identification 5 - Refer to Figure 8

6261120 Identification None - Refer to Figure 8

8667583 Lo & Reverse Clutch Piston

8648987 Lo & Reverse Clutch Piston Seals

8642472 Lo & Reverse Clutch Plate Assembly (fiber - 5 required)

6261120 Lo & Reverse Clutch Plate (steel - 4 required)

8667048 Lo & Reverse Clutch Wave Plate

8663890 Retainer & Ball Assembly (double orifice)