JLG Lull 1044C-54 II Series Service Manual page 130

Supply, Pressure, and Return Hydraulics
5-48
WARNING: Hot hydraulic fluid can cause severe burns. Wait for the
hydraulic fluid to cool before servicing any hydraulic
component.
WARNING: Relieve hydraulic pressure before servicing any hydraulic
component. Escaping hydraulic fluid under pressure can
penetrate the skin, causing death or serious injury.
(Ref. Fig. 5-31) The following procedure describes removal of the rear axle
stabilizer control valve.
1. Follow preparation procedures as outlined in Section 3 of this manual.
Be sure to follow the guidelines in this section detailed under "General
Hydraulic Maintenance Practices" on page 5-3.
2. Install brake pressure diagnostic port test gauge into brake diagnostic
port (see page 5-49).
3. While watching test gauge, press brake pedal numerous times until
pressure gauge reads 0 psi. Remove test gauge from diagnostic port.
4. Thoroughly clean the rear axle stabilizer control valve.
5. Disconnect intermediate wiring harness from the low brake pressure
switch and solenoid valve.
6. Tag and slowly loosen all hydraulic hoses. Disconnect hoses and
bleed any remaining oil into appropriate container. Cap fittings and
hoses.
7. Remove the three (3) each capscrews (Item 21) and lockwashers (Item
22) securing the rear axle stabilizer control valve (Item 23) to the valve
plate.
8. Remove the rear axle stabilizer control valve from the machine and
take it to a clean area appropriate for further disassembly, cleaning,
and overhauling.
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