14
4
Cylinders
Disassembly anD assembly
4l0aX00
CylinDers
inspection and adjustment
Inspection after disassembly
Clean each part thoroughly with cleaning oil, then carry out
the following checks. When a cylinder has been disassem-
bled, replace all the seals with new ones.
1. Piston rod
• Replace the rod if there are cracks.
• If the threads are damaged, repair them or replace
the rod.
• If the plating layer of the plated portion is broken,
rusted or scratched, replace the rod.
• If the rod is bent more than the limit of 1 mm (0.04
in.) in 1 m (3.3 ft.), replace it. (For the measurement
method, refer to the figure on the right.)
• If the inner diameter of the clevis bushing is worn,
replace the bushing.
Measuring the bend
a. support the portion of the rod with the same diam-
eter at both ends on V-blocks.
b. set a dial gauge at the center between the two
blocks.
c. Rotate the rod and take a reading of the maximum
and minimum run-out indicated by the dial gauge. if
the bending of the rod is within the above limit, yet is
bent a lot in a small distance so that it will not move
smoothly, replace the rod if it makes a squeaking
sound in the operation test after reassembly or if it
catches during movement.
2. Tube
• If there are cracks in the welded portion, replace the
tube.
• Replace the tube if the inside surface is scratched or
if it leaks hydraulic oil.
• If the inner diameter of the clevis bushing is worn,
replace the bushing.
3. rod cover
• If the bushing inner diameter is worn and the clear
-
ance with the piston rod is greater than 0.25 mm
(0.0098 in.), replace the bushing.
• If the inside surface of the bushing is scratched, and
the scratches are deeper than the depth of the coat-
ing layer, replace the bushing.
4LAA37Z
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Summary of Contents for TB215R
Page 1: ...CC8E005 WETB215R_A XI Seral No 215000003...
Page 3: ...SAFETY 1...
Page 13: ...SERVICE DATA 2...
Page 16: ...SERVICE DATA DIMENSIONAL DRAWING 3 2 DIMENSIONAL DRAWING 2A0AX001 Operating range 2A0AX02...
Page 53: ...SERVICE DATA WIRE HARNESS DIAGRAM 2 2 WIRE HARNESS DIAGRAM 2H0AX00 Body harness 03342 68000...
Page 54: ...SERVICE DATA WIRE HARNESS DIAGRAM 3 2 WIRE HARNESS DIAGRAM 2H0AX00...
Page 55: ...SERVICE DATA WIRE HARNESS DIAGRAM 4 2 WIRE HARNESS DIAGRAM 2H0AX00...
Page 56: ...SERVICE DATA WIRE HARNESS DIAGRAM 5 2 WIRE HARNESS DIAGRAM 2H0AX00...
Page 57: ...SERVICE DATA WIRE HARNESS DIAGRAM 6 2 WIRE HARNESS DIAGRAM 2H0AX00...
Page 58: ...FUNCTION 3...
Page 88: ...DISASSEMBLY AND ASSEMBLY 4...
Page 125: ...DISASSEMBLY AND ASSEMBLY OPERATING DEVICE 6 4 OPERATING DEVICE 4F0AX00 Hydraulic piping...
Page 230: ......
Page 232: ...TROUBLESHOOTING 5...
Page 287: ...Other 6...