A/T - 1st & 2nd Gear Slips, Burned Band or Direct Clutch

Bulletin No. T 83-117
File In Group 7
Number 84
Date Aug. '83

FIRST AND SECOND GEAR SLIPS, BURNED BAND AND/OR DIRECT CLUTCH 1983 THM 325-4L - ALL MODELS

FIGURE 1 - Accumulator Housing:

Some 1983 Eldorados and Sevilles equipped with THM 325-4L transmissions may exhibit one or more of the following conditions:

1. First and second gear slips
2. Slips only in second gear when hot
3. 3-2 flare at approximately 30 MPH
4. Burned band and/or direct clutch

The above conditions may be caused by an oversized 1-2 piston pin hole in the accumulator housing (Figure #1). During second gear operation, the piston will apply, but oil may exhaust out the oversized pin hole, and applied intermediate clutch pressure will be lost.
When servicing any 1983 THM 325-4L transmission for any of the above conditions, check the 1-2 accumulator piston pin for a slip fit. If the pin fits loosely in the pin hole, the accumulator housing (P/N 8635935) must be replaced.

For warranty purposes, use Labor Operation Number K6660 at 1.4 hours.