jcb JS300 Service Manual page 877

Inspection,
Maintenance Point
Are the bolts, nuts loose?
Are the bolts, nuts tightened?
Ram Cylinder
Are there cracks in the welding or other damage?
(Including Piping)
Are there big depressions or dents in the cylinder?
Use Limit
Nominal diameter (mm)
55~80
85~120
Nominal diameter (mm) Standard inner diameter (mm) Maximum inner diameter (mm)
55~75
80~120
Nominal diameter (mm)
95~160
165~250
E-216
Inspection, Maintenance Contents
Table 3. Piston Rod Outer Diameter Wear Limit
Minimum outer diameter (mm)
Table 4. Rod Bushing Inner Diameter Wear Limit
+0.06~+0.19
+0.06~+0.195
Table 5. Piston Slide Ring Thickness Wear Limit Section
Standard thickness (mm)
2.42~2.48
2.92~2.98
9813/5100-1
Daily
O
O
O
-0.023
-0.027
+0.30
+0.30
Maximum thickness (mm)
2.37
2.87
Section E - Hydraulics
Hydraulic Rams
Maintenance Specifications
Monthly Annually
O
Treatment
Replace or replate
Replace or replate
Treatment
Bushing replacement
Bushing replacement
Treatment
Replace slide ring
Replace slide ring
Note
E-216