A/T - New (C1) Accumulator Improves Shift Feel N to D

91toyota03

REF.: TRANSMISSION & CLUTCH

NO.: TM91-009

DATE: MAY 10, 1991

MODEL: SV

IMPROVED SHIFT FEEL "N" TO "D" A140 # (C1) ACCUMULATOR

1. A passage has been added to the C1 accumulator control circuit of the valve body to increase the controllability of the forward clutches to improve shift feel from "N" to "D". The following modifications have been made to the transmission:

1) Modified transaxle case with the addition of C1 accumulator control pressure hole.
2) Modified C1 accumulator piston
3) Modified C1 accumulator piston spring
4) Additional O-ring for C1 accumulator piston
5) Elimination of the inner accumulator piston spring

PRODUCTION EFFECTIVE:

From VIN P/D A/TM Model A/TM Serial No.
JT2SV2 # * # L0342889 3/90 A140L 0A07894
JT2SV2 # * # L3419767 3/90 A140E 00124286

PART NUMBER INFORMATION:

Prev. Part No. New Part No. Part Name
34104-20072 * 35104-20073 Case sub-assy, transaxle
35424-32010 * 35424-20020 Piston, C1 accumulator
------ * 90301-23194 O-Ring (C1 accumulator piston upper)

90501-22005 ** 90501-18089 Spring, Compression
* 90501-18084 (C1 accumulator piston outer)

90501-23044 N/A Spring, compression
(C1 accumulator piston inner)

* Parts are interchangeable as a set only
** This part number is not available as a service replacement part order P/N 90501-18084

Forward Clutch (C1) Accumulator

1. Case Sub-Assy, Transaxle

2. Piston, C1 Accumulator and O-Ring

3. Ring, O (For C1 Accumulator Piston Upper)

4. Spring, Compression (For C1 Accumulator Spring)

II. To further improve "N" to "D" gear engagement on transaxles produced after 0F13252 or 00630623 (TMC 8/90 or TMM 10/90) the accumulator spring has been changed as shown below:

Previous New

A 58.04 mm 52.5 mm
(2.285 in.) (2.067 in.)

B 17.0 mm <----------
(0.669 in)

Color Red & White <----------

PRODUCTION EFFECTIVE:

From VIN P/D A/TM Model A/TM Serial No.
JT2SV2 # * # M0367973 8/90 A140E/L 0F13252/00630623
JT2SV2 # * # M3532033 8/90 A140E/L 0F13252/00630623
4T1SV2 # * # MU300004 10/90 A140E/L 0F13252/00630623

PART NUMBER INFORMATION:

Prev. Part No. New Part No. Part Name
90501-18089 *90501-18084 Spring, Compression
(C1 accumulator piston)

* New part is interchangeable with previous part