Komatsu F30791, Shop Manual

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5 - Raise the cylinder and hook the piston rod to the mo-
bile group of the tool C1 .
6 - Extract the piston rod group (4) from the cylinder.
7 - Remove the cylinder (2) and the piston rod group.
8 - Lock the complete piston rod (4) onto the apparatus
C1 .
9 - Attach the socket wrench C6 to the lock nut (5) of the
piston (6) and, using the dynamometric toolwith a
multiplier C2 , remove the nut.
H Socket wrench measurement:
Unit: mm
Cylinder
Boom Arm Bucket
Boom
swing
Blade
Model
PC20R-8 41 46 36 46 41
PC27R-8 46 46 41 46 41
10 - Take all the groups to pieces and remove all the
seals, guard rings and guide rings.
The seals, guard rings, and guide rings cannot
be used again.
30-65
REMOVAL AND INSTALLATION WORK EQUIPMENT CYLINDERS
PC20R-8 PC27R-8
RKPA1420
4
2
C
1
RKPA1430
5
4 6
C
6
C
2