Mainshaft Thrust Shim

Adjustment

1. Remove the thrust shim and oil guide plate from the transmission housing.
2. Install the 3rd/4th synchro hub, spacer collar, 5th synchro hub, ball bearing, and thrust washer on the mainshaft. Install the assembly in the transmission housing.

3. Measure the distance B between the end of the transmission housing and thrust washer.
NOTE:
•   Use a straight edge and feeler gauge.
•   Measure at three locations and average the readings.

4. Measure the distance C between the surfaces of the clutch housing and bearing inner race.

NOTE:
•   Use a straight edge and feeler gauge.
•   Measure at three locations and average the readings.

5. Select the proper shim (or shim pair) on the basis of the following calculations:
NOTE: Do not use more than two shims.

(Basis Formula)
(B) + (C) - 0.95 = shim thickness

Example of calculation:
D15B8. D15B7, D15Z1: 65 mm Thrust Shim

	PART NUMBER	THICKNESS
A	23931-PL3-A10	0.60 mm (0.0236 in)
B	23932-PL3-A10	0.63 mm (0.0284 in)
C	23933-PL3-A10	0.66 mm (0.0260 in)
D	23934-PL3-A10	0.69 mm (0.0272 in)
E	23935-PL3-A10	0.72 mm (0.0283 in)
F	23936-PL3-A10	0.75 mm (0.0295 in)
G	23937-PL3-A10	0.78 mm (0.0307 in)
H	23938-PL3-A10	0.81 mm (0.0319 in)
I	23.939-PL3-A10	0.84 mm (0.0331 in)
J	23940-PL3-A10	0.87 mm (0.0343 in)
K	23941-PL3-A10	0.90 mm (0.0354 in)
L	23942-PL3-A10	0.93 mm (0.0366 in)
M	23943-PL3-A10	0.96 mm (0.0378 in)
N	23944-PL3-A10	0.99 mm (0.0390 in)
O	23945-PL3-A10	1.02 mm (0.0402 in)
P	23946-PL3-A10	1.05 mm (0.0413 in)
Q	23947-PL3-A10	1.08 mm (0.0425 in)
R	23948-PL3-A10	1.11 mm (0.0437 in)
S	23949-PL3-A10	1.14 mm (0.0449 in)
T	23950-PL3-A10	1.17 mm (0.0461 in)
U	23951-PL3-A10	1.20 mm (0.0472 in)
V	23952-PL3-A10	1.23 mm (0.0484 in)
W	23953-PL3-A10	1.26 mm (0.0496 in)
X	23954-PL3-A10	1.29 mm (0.0508 in)
Y	23955-PL3-A10	1.32 mm (0.0520 in)
Z	23956-PL3-A10	1.35 mm (0.0531 in)
AA	23957-PL3-A10	1.38 mm (0.0543 in)
AB	23958-PL3-A10	1.41 mm (0.0555 in)
AC	23959-PL3-A10	1.44 mm (0.0567 in)
AD	23960-PL3-A10	1.47 mm (0.0579 in)
AE	23961-PL3-A10	1.50 mm (0.0591 in)
AF	23962-PL3-A10	1.53 mm (0.0602 in)
AG	23963-PL3-A10	1.56 mm (0.0614 in)
AH	23964-PL3-A10	1.59 mm (0.0626 in)
Al	23965-PL3-A10	1.62 mm (0.0638 in)
AJ	23966-PL3-A10	1.65 mm (0.0650 in)
AK	23967-PL3-A10	1.68 mm (0.0661 in)
AL	23968-PL3-A10	1.71 mm (0.0673 in)
AM	23969-PL3-A10	1.74 mm (0.0685 in)
AN	23970-PL3-A10	1.77 mm (0.0697 in)
AO	23971-PL3-A10	1.80 mm (0.0709 in)