A/T - 700R4 New Forward Clutch Backing Plate

SIL 88-17 (Apr)

SUBJECT: THM 700-R4

New Forward Clutch Backing Plate

TRANSMISSION MODELS: All Models 1987 THM 700-R4

CHANGE TO ASSEMBLY COMPONENTS:





- New forward clutch backing plate is smaller in diameter (Figure 11)

- Input housing and shaft assembly with larger splines that match the forward clutch backing plate splines (Figure 11)

SERVICE ACTION:

The new forward clutch backing plate or the new input housing and shaft assembly cannot be used on transmissions built prior to February 9, 1987 (Julian Date 040).

SERVICE PARTS INFORMATION:

PART NUMBER DESCRIPTION

Forward Clutch Backing Plate, Selective (650)
8667667 Identification A Refer to Figure 12
8667668 Identification B Refer to Figure 12
8667669 Identification C Refer to Figure 12
8667670 Identification D Refer to Figure 12
8667671 Identification E Refer to Figure 12

8667661 Input Housing and Shaft Assembly (621) (used with 245 mm converter)
8667659 Input Housing and Shaft Assembly (621) (used with 298 mm converter)
8667660 Input Housing and Shaft Assembly (621) (used with 298 converter MHM model only)





PROCEDURE FOR SELECTION OF THE FORWARD CLUTCH BACKING PLATE (Figure 12)

1. With the overrun clutch and the forward clutches fully assembled in the input housing and shaft assembly, use feeler gauges to measure the backing plate travel.

2. Proper forward clutch backing plate travel should be .75 mm (.030") to 1.60 mm (.063").

3. Select the proper forward clutch backing plate (Figure 12) to obtain the specified travel.