Platform Level Down Relief Valve - JLG H340AJ Service And Maintenance Manual

SECTION 5 - BASIC HYDRAULIC INFORMATION & HYDRAULIC SCHEMATICS
2. Remove the hose from port L1 located on the bottom of
the valve. Plug and cap.
3. The relief valve is located below port T2.
4. Activate level up. The pressure
read should be 2800 ±100 psi
(193 ± 6.9 Bar).
5. To increase, turn clockwise. To decrease, turn counter-
clockwise. Re-hose port L1.
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6. Platform Level Down Relief Valve

1. This relief valve is located on the valve manifold inside
the tower boom upright.
2. Install a pressure gauge at port M2 of this valve.
3. The relief valve is located above ports P2 & T2.
4. Activate level down. The pressure gauge should read
1400 ± 100 psi (96.5 ± 6.9 Bar). To increase, turn clock-
wise.
5. To decrease, turn counterclockwise.
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