Hyster-Yale Hyster-Yale Electric Pallet Truck MPB040-EN24T2748 MPB040-EN24T2748

1. Remove the hydraulic unit from the lift truck. Refer to the Hydraulic Unit in this section.

2. Clean the reservoir and pump area to prevent contaminants from entering the hydraulic system.

3. Remove the capscrews retaining the reservoir to the hydraulic unit. Tap around the perimeter to break the seal and separate the reservoir from the motor assembly.

4. Remove the spring retaining screw from the suction tube.

5. Remove the suction tube and strainer by pulling down and out.

6. Remove the four capscrews retaining the pump to the drive motor.

7. Disassemble the pump assembly and coupling from the adapter.

WARNING: DO NOT make repairs or adjustments unless you have been properly trained and authorized to do so.

Always wear the proper protective equipment including eye protection and petroleum resistant gloves when servicing hydraulic components.

Completely lower all lift components and relieve pressure before disassembling any part of the lift pump or disconnecting any hydraulic hoses.

The hydraulic oil is hot at normal operating temperatures. Be careful when draining the oil.

Never put your hands on pressurized hydraulic components. Pressurized hydraulic oil escaping through pin-hole leaks can be injected into the skin.

CAUTION: DO NOT OVERFILL. Oil will leak from the breather/ filler cap if too full.

NOTE: Check the hydraulic oil level in the reservoir when oil is at room temperature.

Operate lift truck until hydraulic oil reaches operating temperature (43 to 49 C (110 to 120 F))

Lower the forks completely to relieve pressure from hydraulic circuit.

WARNING: Batteries are heavy and can cause personal injury. Use care to avoid injury. DO NOT put hands, arms, feet, and/or legs between the battery and a solid object. Make sure the capacity of the crane and spreader bar is greater than the weight of the battery. The weight of the battery is normally shown on the battery case. The maximum battery weight is shown on the lift truck nameplate. The spreader bar must NOT be made of metal or it must have insulated straps.

WARNING: Put blocks under each side of the truck under the drive unit frame. Position blocks on both sides of the load wheels. The blocks must prevent the lift truck from falling and causing personal injury or property damage.

WARNING: The capacitor in the transistor controller can hold an electrical charge after the battery is disconnected. To prevent electrical shock and personal injury, discharge the capacitor before inspecting or repairing any component in the drive unit compartment. Wear safety glasses. Make certain the battery has been disconnected. Refer to the section Steering Mechanism 1600 YRM 1004.

CAUTION: Make certain the hydraulic cylinder is fully collapsed.

Remove the drive unit compartment cover.

Disconnect the battery. Use a spreader bar and lifting device to remove the battery. DO NOT allow the battery move from side to side. Make sure the battery cables have clearance.

Raise the drive wheel off the floor and put blocks under both sides of the drive unit frame.

Drain the hydraulic oil from the hydraulic unit into an appropriate container.

Tag and disconnect all of the electrical wires from the hydraulic unit.

Warning: Follow the steps carefully to ensure the hydraulic system remains clean.

Flush the entire system to remove all paint, metal chips, welding shot, and debris.

Filter each change of oil to prevent the introduction of contaminants into the system.

Provide continuous protection from airborne contamination by keeping the breather clean and serviceable.

Sign off on the hydraulic oil cleaning

The reservoir of the hydraulic pump unit can be removed without removing the complete hydraulic unit.

The motor will also come loose, with one set of screws holding the reservoir to the subunit to the motor.

WARNING: The capacitor in the transistor controller can hold an electrical charge after the battery is disconnected. To prevent electrical shock and personal injury, discharge the capacitor before inspecting or repairing any component in the drive unit compartment. Wear safety glasses. Make certain the battery has been disconnected. Refer to the section Steering Mechanism 1600 YRM 1004.

CAUTION: Make certain the hydraulic cylinder is fully collapsed.

NOTE: The reservoir must be lowered below the suction tube before attempting to move the reservoir away from the lift truck. Remember the reservoir may contain hydraulic oil. Dispose of all used oil in accordance with local regulations.

1. Move the key to the OFF position. Disconnect the battery.

2. Remove the drive unit compartment cover.

3. Discharge the capacitor in the transistor controller.