Removal; Fig. 6-17: Selector Valve Installation - JLG Lull 1044C-54 II Series Service Manual

Boom and Transfer

Removal

Selector Valve
6-30
# Description
1 Lockwasher
2 Nut
3 Hydraulic Hoses
4 Hydraulic Hoses

Fig. 6-17: Selector Valve Installation

(Ref. Fig. 6-17) The following steps are required to remove the selector
valve in models with a mid-inlet hydraulic system.
1. Follow preparation procedures as outlined in Section 3 of this manual.
2. Install brake pressure diagnostic port test gauge into brake diagnostic
port.
3. While watching test gauge, press and release brake pedal numerous
times until pressure gauge reads 0 psi. Remove test gauge from
diagnostic port.
4. Remove roll-back hose tray.
5. To avoid contamination of the system, clean selector valve.
6. Disconnect joystick wiring harness (Item 8) from selector valve.
7. Tag and loosen six (6) hydraulic hoses (Items 3, 4, and 6) and bleed
any remaining oil into a suitable container. Disconnect hoses. Cap
fittings and hoses.
8. Remove two (2) each nuts (Item 1), lockwashers (Item 2), and
capscrews (Item 7) securing selector valve (Item 5) to the valve plate.
9. Take selector valve and mounting hardware to a suitable area for
cleaning and further disassembly.
10. Clean mounting hardware with solvent. Dry with compressed air,
inspect for damage, and replace as necessary.
1
3
2
#
5 Selector Valve
6 Hydraulic Hoses (Joystick)
7 Capscrew
8 Joystick Wiring Harness
8
6
7
5
4
Description
31200079