Platform Rotate Bleed Procedure; General Notes & Precautions; Procedure - JLG 400S Service And Maintenance Manual

SECTION 4 - BOOM & PLATFORM

4.11 PLATFORM ROTATE BLEED PROCEDURE

NOTE: This procedure will have to be performed any time a com-
ponent is removed or replaced in the platform rotate
hydraulic circuit.
General Notes & Precautions
• Wear appropriate eye protection.
• Engine must be turned off when loosening & tightening
hydraulic connections.
• Ensure persons and objects are clear of the platform area
prior to starting the engine and activating platform rotate
function.
• Place appropriate pan and absorbent mats under platform
rotator to collect hydraulic fluid.

Procedure

1. Activate platform rotate right until end of stroke and
hold for 5 seconds.
2. Activate platform rotate left until end of stroke and hold
for 5 seconds.
4-54
3. Loosen hydraulic hose end at port P1 of platform rotator
1 turn (use existing paint mark as a reference).
4. Activate platform rotate right for approximately 10 sec-
onds (the platform will rotate slowly).
5. Activate platform rotate left until end of stroke.
6. Repeat steps 4 & 5 until air is removed.
7. Tighten hydraulic hose end at port P1 of platform rota-
tor to 14 ft. lbs. (19 Nm).
8. Activate platform rotate right until end of stroke and
hold for 5 seconds.
9. Loosen hydraulic hose end at port P2 of platform rota-
tor.
3121671