jcb JS200 Service Manual page 377

Section E
77 - 4
Reconditioning (continued)
Bush removal (continued)
7. Block (jig) preparation
8. Removing bushing
9803/6400
Hydraulics
Hydraulic Rams
Prepare a block and align the shaft centre while placing
the cylinder head on the block. Choose a block suitable in
shape and size from the table below.
Division
For ø 75
80
85
90
95
100
105
110
1. Position the block (jig) and cylinder head assembly
(retainer jig and chuck assembly) underneath the
press.
2. Gradually press the retainer (jig) upper surface until
the bushing falls out from the cylinder head (the sound
of the bottom surface of the chuck assembly jig hitting
the work bench will be heard).
Note: Normally it falls out with a load of less than 3 tons.
The press ram stroke varies with the cylinder head size
and is about 32~52 mm.
1. Use a retainer when pressing.
2. When the shaft centre of the block and cylinder head
assembly are not aligned, stop the press work and
move the block, aligning the shaft centre, and
proceed.
d1 d2 h
82 110 80
87 112 80
92 124 80
97 130 80
102 136 80
107 140 80
112 146 80
117 150 80
Section E
77 - 4
Nominal
size
75
80
85
90
95
100
105
110
Issue 1