A/T - Harsh 3rd - 4th Gear Upshift

Bulletin No. T 85-44 File In Group 7
Number 116
Date Jan. '85
SUBJECT: HARSH 3-4 UPSHIFT - THM 325-4L TRANSMISSION

MODELS AFFECTED: 1984 ELDORADOS AND SEVILLES

FIGURE 1 - THM 325-4L TRANSMISSION I.D. NAMEPLATE:

FIGURE 2 - CONTROL VALVE ASSEMBLYIDENTIFICATION:

FIGURE 3 - SPACER PLATE ANDGASKETS IDENTIFICATION:

Some 1984 Eldorados and Sevilles equipped with HT4100 engines and THM 325-4L transmissions built prior to serial numbers 84 AJ 84686 or 84 AE 4838 (refer to Figure 1) may exhibit a condition of harsh shift feel, or bump, during a 3-4 upshift. To fix this condition, calibration changes were made to the control valve assembly, spacer plate and associated gaskets; and a 3-4 accumulator spring was added.

To repair a harsh 3-4 upshift condition on transmissions built prior to the listed serial numbers, install the following parts:

REFER TO
PART NAME IDENTIFICATION PART NUMBER FIGURE

Control Valve Assembly "AJ2" (ink stamp) 8639641 2

Spacer Plate "AJ" (with V-notch) 8635661 3

Gaskets(1)

(Case Side) V-notch 8639856 3

(Control Valve Side) V-notch 8639857 3

3-4 Accumulator Spring(2) Pink and Green 8639858 4

FIGURE 4 - 3-4 ACCUMULATOR SPRING:

(1)Each gasket packaged separately, not available in kit form. (2)Position spring between 3-4 accumulator piston and housing (refer to Figure 4).
For warranty purposes, use labor Operation No. K6560 at 0.7 hour.