77 - 4
Section E
Hydraulics
9803/6400
Section E
77 - 4
Issue 1
Hydraulic Rams
Reconditioning (continued)
Bush removal (continued)
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.
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.
7. Block (jig) preparation
8. Removing bushing
Division d1 d2 h Nominal
size
For ø 75 82 110 80 75
80 87 112 80 80
85 92 124 80 85
90 97 130 80 90
95 102 136 80 95
100 107 140 80 100
105 112 146 80 105
110 117 150 80 110
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