DOC-20230111-WA0038.

UPPERSTRUCTURE / Pilot Valve
IMPORTANT: Attach identification tags on all disconnected
hoses to aid in reassembly.
7. Disconnect hoses (24 to 29) and attach a cap on
each disconnected hose end.
: 19 mm
21
8. Remove bolt (9) with spring pin (8), spring washer
(11), plane washer (12) and bolts (10) (3 used) to
remove pilot valve (21).
: 13 mm
28
29
24
25
26
27
W178-02-07-004
Installation
1. Install spring washer (11) and plane washer (12)
to bolt (9) with spring pin (8). Install pilot valve (21)
to the console with bolts (9) and (10).
: 13 mm
: 10 N⋅m (1.0 kgf⋅m, 7.2 lbf⋅ft)
24 - Hose T2: To pilot shut-off valve
25 - Hose F : To pilot piping coupler bracket
port F (right swing)
26 - Hose C : To pilot piping coupler bracket
port C (arm roll-out)
27 - Hose P1: From pilot shut-off valve
28 - Hose E : To pilot piping coupler bracket
port E (left swing)
29 - Hose D : To pilot piping coupler bracket
port D (arm roll-in)
NOTE: Piping location shows that of ISO pattern.
2. Connect hoses (24 to 29) to pilot valve (21).
: 19 mm
: 29.5 N⋅m (3 kgf⋅m, 21.5 lbf⋅ft)
21
8
9
10
11
12
W178-02-07-003
W2-7-7