Jib Cylinder Holding Valve; Mast Cylinder Holding Valve - Schematic/Exploded View - JLG TOUCAN 8E Service And Maintenance Manual

SECTION 7 - HYDRAULICS
Valve Installation
1. Check presence and condition of the two BS rings.
Install the valve onto the cylinder. Keep the solenoid
valve perpendicular to the cylinder and torque the
banjo bolt (6) 38 to 42 Nm (28 to 31 ft lbs).
DO NOT OVER-TORQUE THE VALVE BANJO BOLT.
2. Install the coil (5), the O-ring (4), the manual over-
ride device (3) and tighten the coil nut (2).
3. Attach the spring ring (7) to the elbow adapter and
connect hydraulic and electric lines as previously
tagged.
4. Connect battery plug. Using ground controls, raise
the mast and remove blockings.
5. Perform a few mast raising/lowering movements to
bleed air from the circuit and to check for proper
operation.
6. Check the mast manual descent for proper opera-
tion.
7. Install chassis hoods.
8. Check hydraulic fluid level and adjust accordingly.
Figure 7-15. Mast Cylinder Holding Valve - Schematic/
Exploded View
1. Ported Body
2. Banjo Bolt w/ Built-in Flow Regulator
3. BS Ring
4. Mast Solenoid Valve
5. Coil - 24 VDC
6. O-Ring
7. Manual Override Device
8. Coil Nut
9. Elbow Adapter
7-8

Jib Cylinder Holding Valve

Figure 7-16. Jib Cylinder Holding Valve - Removal/Instal-
Valve Removal
ENSURE THAT THE JIB IS FULLY LOWERED (OR SAFELY SUP-
PORTED) BEFORE DISMOUNTING THE VALVE. DISCONNECT
BATTERY PLUG UNTIL THE REPAIRS ARE COMPLETED.
1. Ensure the jib is lowered (or safely supported - Refer
to Section 5). Turn power off at ground controls. Dis-
connect battery plug.
2. Tag and disconnect electric lines from the solenoid
valve coils.
3. Disconnect and cap the cylinder hydraulic line and
port (1).
4. Remove the coil from the Jib Up solenoid valve (2).
5. Unscrew the hardware (3) securing the valve protec-
tor (4) and remove the protector.
6. Unscrew the valve banjo bolt (5) and plug the cylin-
der port (3/8" BSPP).
– JLG Lift –
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31210090