Shim Adjustment Of Input And Output Shafts - Suzuki Samurai 1986 Service Manual

Shim Adjustment of Input and Output Shafts

Clearance in thrust direction of both input and
output shafts is adjusted by putting shims
between input shaft rear bearing and rear case
for input shaft and between output shaft rear
bearing and rear case for output shaft.
As thrust clearance is specified as follows
determine shim thickness to meet specification
according to the following procedures.
Thrust clearance
specification
[Input shaft]
1) Take measurement "A" of rear case as shown
in figure below by using depth gauge,
2) Take measurement "6" of center case with
bearing circlip installed.
3) Take measurement "C" (between bearing
inner races) of input shaft with bearings
installed, by using micrometer.
NOTE:
Before measuring, make sure that each bearing
l
is free from abnormal noise or resistance by
spinning its outer race.
Each measurement in above steps 1) to 3)
l
must be taken accurately in careful manner,
If shim thickness is determined based on
rough measurement, clearance of each shaft in
thrust direction will not satisfy specification.
And improper clearance may cause oil leakage,
broken bearing and abnormal noise.
l Take the same measurement at 3 to 4 diffe-
rent positions and use their mean.
14-16
0.05 - 0.15 mm
(0.002 - 0.006 in.)
6
1. 1. Center case Center case
2. 2.
Rear case Rear case
3. 3. Input shaft
Input shaft
4. Output shaft 4. Output shaft
Fig. 14-48-
Fig.
Fig. 14-48-1
4) Using measurements obtained in steps 1) to 3)
and equation described below, calculate shim
thickness which is necessary for proper
thrust clearance.
Thrust clearance = ("A" + "B" + Gasket
thickness) - "C"
As the above equation holds for thrust
clearance and gasket thickness is specified as
0.3 mm and thrust clearance as 0.05 to 0.15
mm, shim thickness is calculated by the
following equation.
Shim thickness = ("A" + "B" + 0.3 ) -
[Example]
Supposing A, B and C are as follows;
A = 81.35 mm (3.203 in.)
B = 35.70 mm (1.405 in.)
C = 117.05 mm (4.608 in.)
Shim thickness = (81.35 + 35.70 + 0.3) -
(117.05 + 0.05 N 0.15)
= 117.35- 117.10~ 117.20
= 0.25 - 0.15
In this case, use of 0.15 to 0.25 mm (0.006 to
0.009 in) thick shim(s) will ensure specified
thrust clearance which is 0.05 to 0.15 mm
(0.002 to 0.006 in). Therefore 2 pieces of
0.1 mm (0.004 in) thick shim should be
selected in available shims below to satisfy
thickness.
5. 5. Bearing circlip Bearing circlip
6. 6. Gasket Gasket
7. 7. Gasket thickness Gasket thickness
(0.3 (0.3
mm or 0.012 in) mm or 0.012 in)