Removal; Fig. 5-28: Mid-Inlet Control Valve Installation - JLG Lull 1044C-54 II Series Service Manual

Removal

Mid-Inlet Control Valve
31200079
Valve Plate
Lockwasher
Capscrew

Fig. 5-28: Mid-Inlet Control Valve Installation

(Ref. Fig. 5-28) The following procedure describes removal of the mid-inlet
control valve.
1. Follow preparation procedures as outlined in Section 3.
2. Install a brake pressure diagnostic test gauge onto the "Brakes"
diagnostic port.
3. While watching the test gauge, press the brake pedal numerous times
until the pressure gauge reads 0 psi. Remove the test gauge and cap
the diagnostic port.
4. Tag and disconnect all hydraulic lines from control valve fittings. Cap all
hoses, tubes, and fittings. Tag all fittings.
5. Remove three (3) capscrews and lockwashers securing the mid-inlet
control valve to the valve plate.
6. Using appropriate lifting devices, lift the control valve from valve plate
and take to an appropriate location for disassembly and cleaning.
Supply, Pressure, and Return Hydraulics
Control Valve
5-43