A/T - No Reverse or Neutral to Reverse Delayed
83olds4SUBJECT NO REVERSE OR NEUTRAL TO REVERSE NUMBER: 83-T-20
DELAYED ENGAGEMENT 125/125C TRANSAXLES
DATE: September 16, 1983
MODELS/YEARS 1980 THROUGH 1983 OMEGAS
1982 AND 1983 CUTLASS CIERAS AND FIRENZAS SECTION: 7A
Some 1980 through 1983 Omegas, Cutlass Cieras and Firenzas equipped with a THM 125/125C transaxles may exhibit a no reverse or neutral to reverse delayed engagement condition.
FIGURE 1:
FIGURE 2:
FIGURE 5:
To correct these conditions, two changes in the low and reverse clutch assembly were introduced in late March 1983.. Refer to Figure 5. The low and reverse piston assembly is being produced with a third design lip seal retainer (Figure 1) and an oil displacement insert (Figure 2) was added to the low and reverse clutch assembly. This insert displaces oil and quickens the apply of the low and reverse clutch.
When servicing any 1980 through 1983 THM 125/125C transaxle for a no reverse or a neutral to reverse delayed engagement, refer to the following chart:
Type of Low and
Condition Reverse Clutch Asm. Correction
FIGURE 3:
No reverse - Lip First Design Replace the low and reverse
Retainer has separated (Figure 3) clutch assembly with Service
from the low and reverse Package No. 8653915. Also
piston assembly add the oil displacement insert
(part no. 8643490)
Neutral to Reverse First Design Replace the low and reverse
Delayed Engagement (Figure 3) clutch assembly with Service
Package no. 8653915. Also add the oil displacement insert (part no. 8643490)
FIGURE 4:
No Reverse - Lip Seal Second Design Replace the second design
Retainer has separated (Figure 4) low and reverse piston with a
from low and reverse third design low and reverse
piston assembly piston (part no. 8653916)
Neutral to reverse Second Design Add the oil displacement
Delayed Engagement (Figure 4) insert (part no. 8643490) to
the low and reverse clutch assembly