A/T- Grinding Noise In All Ranges/No Drive Condition
Number 84-7-7 Date 3/84Subject: GRINDING NOISE IN ALL RANGES OR NO DRIVE CONDITION - 1983 - 1984 THM 700-R4 TRANSMISSIONS
FIGURE 1 - FRONT VIEW:
FIGURE 2 - SIDE VIEW:
Beginning January 9, 1984 all THM 700-R4 transmissions were built with a new Reaction Internal Gear. This new gear has a change in the parking lugs and internal gear teeth area. Since the new gear is dimensionally the same as the former, gear identification marks have been added.
Two types of indentification have been used. The first or former being an ink stamp on the top chamfer of the gear (Figure 2).. The second or current being a broached line on three parking lugs equally spaced around the internal reaction gear. (See Figures 1 and 2). All THM 700-R4 transmissions with a build date of Y4009A, B, C, or H or after will have the Reaction Internal Gear.
When replacing the Reaction Internal Gear order Part Number 8654161 (new part number).