Service Manual User guide

Boom and Transfer
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
6-29
The boom hydraulic control valve is located near the middle of the machine
on the valve plate. It controls fluid flow to the boom hoist and telescope
cylinders when operating the hoist/telescope joystick control.
Removal
Boom Hydraulic Control
Valve (Control Manifold
System)
644B-37 (S/N 101–590, 592–666)
644B-42 (S/N 101–207)
6K-37 (S/N 101–317)
6K-42 (S/N 101–119)
844C-42 (S/N 101–621)
8K-42 (S/N 101–220)
1044C-42 (S/N 101–116)
1044C-54 (S/N 101–154)
10K-42 (S/N 101–106)
10K-54 (S/N 101–103)
Fig. 6-18: Boom Hydraulic Control Valve Installation
8
9
8
11
10
12
6
7
5
4
3
2
1
K1107
# Description
1 Hydraulic Hoses (Upper)
2 Hydraulic Hoses (Lower)
3 Hex Head Capscrew
4 Lockwasher
5 Mounting Bracket
6 Hydraulic Return Hose
# Description
7 Hose Clamp
8 Hydraulic Hoses
9 Boom Hydraulic Control Valve
10 Hydraulic Tube
11 Hydraulic Control Manifold
12 Valve Plate