Shibaura ST330, Workshop Manual

Page: 169 / 250

159
(
4) Top link bracket (Draft control only)
①
Measure the clearance between the bush and pin.
If the service limit is exceeded, replace the bush.
Clearance between bracket bush and pin (mm)
Standard assembling value Service limit
0.09-0.25 0.5
② Adjust the spring installing length to the
dimension shown in the figure with the castle nut.
After the adjustment, fix with the split pin.
(5) Cylinder head
①
lf oil in the hydraulic cylinder leaks, check the
steel ball guide for wear and replace if defective.
NOTE:
Replace the control valve ass'y (safety valve) as an
ass'y.
Tightening torque
49
～
58.8 N
･
m
{500 - 600 kgf ･ m}
②
Replace the O-rings of the improvement lowering
speed adjusting valve if any.
471Y
472Y
473Y
474Y
1. Cylinder head
2. Bolt
3. Plug
4. O-ring
5. O-ring ； P65
6. Gasket
7. O-ring ； P7
8. Valve
9. Guide
10. O-ring
11. Grip
12. Nut
13. Nameplate
14. Gasket
15. Guide
16. Steel ball
17. Spring
18. Safety valve ass’ ｙ