Installation; Overhaul; Fig. 6-18: Selector Valve Assembly - JLG Lull 1044C-54 II Series Service Manual

Installation

Selector Valve

Overhaul

Selector Valve
31200079
(Ref. Fig. 6-17) The following steps are required to install the selector
valve in models with a mid-inlet hydraulic system.
1. Secured the selector valve (Item 5) to the valve plate with two (2) each
capscrews (Item 7), lockwashers (Item 2), and nuts (Item 1). Torque
nuts to 50 in-lbs.
2. Reconnect four (4) hydraulic hoses (Items 3 and 6) to respective
elbows at ports A3, B3, P1, and P2 on selector valve. Torque hydraulic
hose swivel nuts to 130–150 in-lbs.
3. Install two (2) hydraulic hoses (Item 4) to ports A1 and B1 on selector
valve and torque hose swivel nuts to 130–150 in-lbs.
4. Reconnect joystick wiring harness (Item 8) to selector valve.
1
# Description
1 Nut
2 Coil
3 Solenoid Valve
4 O-ring
5 Backup Rings
6 O-ring

Fig. 6-18: Selector Valve Assembly

(Ref. Fig. 6-18) The following steps describe disassembly and overhaul of
the selector valve assembly in models with a mid-inlet hydraulic system.
1. Loosen and remove four (4) connectors (Item 9) from valve body
(Item 10).
2. Loosen and remove two (2) each O-ring plugs (Item 12) and orifices
(Item 11).
3. Loosen and remove nut (Item 1) from solenoid valve (Item 3).
2
3
4
5
7
6
8
9
# Description
7 Backup Rings
8 O-ring
9 Connector
10 Valve Body
11 Orifice
12 O-ring Plug
Boom and Transfer
12
9
11
10
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