120H and 135H Motor Graders Equipment Lowering with Engine Stopped Caterpillar

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Be sure all personnel are clear of the equipment while the equipment is being lowered. Failure to stay clear of the equipment while the equipment is being lowered may result in personal injury.

Note: If the engine is inoperable and if any of the equipment has not been lowered to the ground, use one of the following methods to lower the equipment to the ground.

Machines that are Not Equipped with Lowering Valves

Illustration 1	g00937498
The relief valves are located under the cab on the implement control valves.

Illustration 2	g00947592

Hold relief valve (1) and loosen locknut (2). Slowly turn hex cap (3) counterclockwise until the equipment is lowered to the ground.

Note: Do not allow the equipment to lower too quickly.

After the equipment has been lowered to the ground, remove the cartridge assembly for the relief valve. Replace the cartridge assembly with a new cartridge assembly or adjust the relief setting. Refer to Testing and Adjusting, "Relief Valve (Implement) - Test and Adjust".

Machines that are Equipped with Lowering Valves

Illustration 3	g00937498
The lowering valves are located under the cab on the implement control valves.

Illustration 4	g00950134

1. Hold relief valve (5) for the circuit of the equipment that needs to be lowered. Turn cap (4) on the relief valve counterclockwise until the equipment is slowly lowered to the ground.

   Note: Do not allow the equipment to be lowered to the ground too quickly.

   Note: Do not remove the cap from the relief valve.

2. When the equipment is on the ground, hold relief valve (5). Turn cap (4) clockwise to a torque of 35 ± 3 N·m (26 ± 2 lb ft).