Komatsu F30791, Shop Manual

Page: 248 / 298

ASSEMBLY OF THE WORK EQUIPMENT CYLINDERS
H Take great care not to damage the sealand the slid-
ing surfaces.
H Prepare each individualcomponent before commen-
cing the finalassembly.
1. Assembly of the cylinderhead
1 - Position the guard ring (7) and, using a press and the
push rod C7 , press it home in the head (3).
H Check the orientation carefully.
2 - Mount the snap ring (8).
3 - Using the tool C3 , mount the lip-seal (9).
H Check that the lips face into the cylinder.
4 - Mount the O-ring (10), the anti-extrusion ring (11) and
the O-ring (12) onto the cylinder head (3).
H Only forthe boom cylinders.
In sequence mount the anti-extrusion ring (17),
the O-ring (18) and the 2nd anti-extrusion ring
(17).
30-66
REMOVAL AND INSTALLATION WORK EQUIPMENT CYLINDERS
PC20R-8 PC27R-8
RKPA1440
7
C
7
3 3
RKPA1450
8
C
3
9
RKZ05260
17 18 3
7
9
10 11 12 17
8