(All dimensions in millimeters)
(Important note: these tolerances were initially
specific to VS5 GS150's. VS1-4 were frequently a little looser
than these, but as
nearly all parts available today are of the VS5 design, and as the
1955-63 all models Service Station Manual lists only these figures,
consider these the official numbers unless you know that you have
pre-VS5 parts.)
Cylinder and Piston
Part
Name |
Normal
Dimensions |
Play at
Assembly |
Max. Play
Permissible
After Use |
Cylinder
Normal |
-0.005
E=57mm
+0.025 |
0.075 for all |
0.12 for all |
Piston
Normal |
C=56.935mm
-/+ 0.015 |
|
|
Cylinder
1st o/s |
-0.
E=57.2mm
+0.02 |
|
|
Piston
1st o/s |
C=57.135mm
-/+ 0.01 |
|
|
Cylinder
2nd o/s |
-0.
E=57.4mm
+0.02 |
|
|
Piston
2nd o/s |
C=57.335mm
-/+ 0.01 |
|
|
Cylinder
3rd o/s |
-0.
E=57.6mm
+0.02 |
|
|
Piston
3rd o/s |
C=57.535mm
-/+ 0.01 |
|
|
Cylinder
4th o/s |
-0.
E=57.8mm
+0.02 |
|
|
Piston
4th o/s |
C=57.735mm
-/+ 0.01 |
|
|
Con Rod and Piston
| Denomination |
Normal
Dimension |
Play at
Assembly |
Max. Play
Permissible
After Use |
Con. Rod
Normal |
+0.005
G=15mm
+0.018 |
0.014/0.035 for all |
5/100 for all |
Wrist Pin
Normal |
-0.009
H=15mm
-0.017 |
|
|
Con. Rod
1st o/s |
+0.005
G=15.05mm
+0.018 |
|
|
Wrist Pin
1st o/s |
-0.009
H=15.05mm
-0.017 |
|
|
Con. Rod
2nd o/s |
+0.005
G=15.10mm
+0.018 |
|
|
Wrist Pin
2nd o/s |
-0.009
H=15.10mm
-0.017 |
|
|
NOTE: Max admissible axial play of con. rod after use
(longitudinal play of con rod on crank pin) is 0.7mm
Piston and Wrist Pin
| Denomination |
Normal
Dimensions |
Play at
Assembly |
Max Play
Permissible
After Use |
| Piston |
-0.005
P=15mm
-0.016 |
0 for all |
2/100 for all |
| Wrist Pin |
-0.009
Q=15mm
-0.017 |
|
|
Output Shaft Shoulder Ring
Part
Name |
Normal
Dimensions |
Assembling
Tolerance
Prescribed |
Max. Play
Permissible
After Use |
Shoulder
Ring |
+0
2.05
-0.06 |
0.15 - 0.40 for all |
0.50 for all |
Shoulder
Ring
1st o/s |
+0
2.20
-0.06 |
|
|
Shoulder
Ring
2nd o/s |
+0
2.35
-0.06 |
|
|
Shoulder
Ring
3rd o/s |
+0
2.50
-0.06 |
|
|
Shoulder
Ring
4th o/s |
+0
2.65
-0.06 |
|
|
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