THM 4L60 (700-R4) NEW DESIGN LIP SEALS

CHANGE:
Beginning on February 28, 1989 (Julian Date 059), all 1989 THM 700-R4 transmissions were built using lip seals with the new short lip design, on pistons designated with an asterisk in the 'Service Information" section of this bulletin. The remaining 3 seals will change to the new short lip design at a later date.

REASON: Ease of assembly at the factory. Find more CAR NEWS for help?

PARTS AFFECTED: PISTON LIP SEALS - New shorter lip design; See Figure 1 for profile view of the lip seals.

INTERCHANGEABILITY:
The new design short lip seals are interchangeable with the previous lip seals. The new
design will replace the current seal as stock is depleted.

SERVICE INFORMATION:
Reverse Input Piston Outer Seal ........................................................................... 8673356
Reverse Input Piston Inner Seal ............................................................................ 8673357
3-4 Piston Inner Seal ............................................................................................. 8673358
3-4 Piston Outer Seal............................................................................................ 8673359
Forward Piston Outer Seal .................................................................................... 8673360
Forward Piston Inner Seal .................................................................................... 8673361
Overrun Piston Outer Seal................................................................................... 8673362
Overrun Piston Inner Seal .................................................................................... 8673363

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