Komatsu Galeo PC138US-8 Shop Manual page 884

SEN02713-00
Assembly
a When assembling, clean and inspect the parts
closely and take care fully so that dirt, rust,
flaw, etc. will not cause a trouble.
1. When installing plug (2) to body (1), take care
that its tip will not enter the hole of the body 20
mm in diameter.
3
Plug (2): 4 – 9 Nm {0.4 – 0.9 kgm}
2. The head of plug (3) must not be projected
from the body surface.
3
Plug (3): 6 – 11 Nm {0.6 – 1.1 kgm}
3. When installing piston (8), apply grease (G2-
LI) to its outside and the inside of the body
hole.
4. Install spring (5) with its small diameter side on
the shim (4) side.
Diameter of spring (Inside diameter)
q
Small diameter side: ø4.9, Large diameter
side: ø5.4
5. When installing springs (6) and (7), note that
they are different and they must be installed to
different hydraulic ports.
Installed height: 34 mm (Common to both
q
springs)
Installed load:
q
Spring (6) (P1, P2): 29 N {3 kg}
Spring (7) (P3, P4): 17.7 N {1.8 kg}
3
Bolt (9): 11.8 – 14.7 Nm {1.2 – 1.5 kgm}
28
50 Disassembly and assembly
PC138US, USLC-8