Raymond® Walkie Pallet Truck Maintenance Manual

Component Procedures

Filter Screen and Suction Tube

1.Remove the reservoir. See “Hydraulic Reservoir” on page 6-78.

2.With the pump assembly inverted, push the spring clip toward the pump housing. See Figure6-59.

3.Grasp the suction tube with the filter screen and pull out of pump housing.

4.Clean the filter screen at the bottom of the suction tube with a suitable solvent. See Figure6-60.

5.From the pump side, blow dry with clean, dry compressed air.

Installation

1.Inspect the filter screen and tube for defects and replace if necessary.

2.Lubricate the pump end of the suction tube with hydraulic fluid.

3.Push the spring clip toward the pump housing and insert the suction tube through the spring clip and into the pump housing until it stops. See Figure6-59.

4.If necessary, rotate the suction tube so that the filter screen is toward the center line of the pump.

5.Install the hydraulic reservoir. See “Hydraulic Reservoi r” on page 6-78.

Filter Screen and Suction Tube PDMM-0100

Component Procedures

Hydraulic Pump Removal

1.Remove the hydraulic unit from the truck and place on a clean bench for disassembly. See “Hydraulic Unit” on page 6-77.

2.Remove the reservoir to gain access to the pump. See “Hydraulic Reservoir” on page 6-78.

3.Grasp the suction tube with the filter screen and pull out of the pump housing. See Figure6-61.

4.Remove the eight pump mounting bolts. Remove the pump from the adapter body.

Installation

1.Stand the motor assembly on end, with the adapter body facing up.

2.Lubricate the O-ring and install on the adapter body facing up.

3.Insert the pump drive coupling onto the end of the motor armature shaft and fill the cavity with lubricant (P/N 990-638).

4.Align the splines on the motor drive and pump shaft. Gently push the pump pilot on the adapter.

5.Secure the pump with the eight pump mounting bolts and torque to 10 to 12 ft lbs (13.5 to 16.3 Nm).

6.Check the inlet screen for clogging. Clean with a suitable solvent. Insert the inlet tube into the pump.

7.Install the reservoir. See “Hydraulic Reservoir” on page 6-78.

Lift Motor General Data

Brush ReplacementReplace brushes when they have worn to the minimum length of 1/2 in. (12.70 mm).

Spring TensionAdjust the spring tension of new brushes to 32 to 40 oz (908.8 to 1136gms).

Removal

1.Remove the hydraulic unit from the truck. See “Hydraulic Unit” on page 6-77.

2.Remove the two bolts from the end plate that attach the motor to the adapter body. See Figure6-62.

3.Separate the motor and the adapter body. See Figure6-63.

4.Remove the solenoid from the side of the motor housing to be reused. See Figure6-63.

Component Procedures

Installation

1.Stand the pump assembly on end, with the adapter body facing up.

2.Set aside the pump drive coupling to be reused. See Figure6-64.

NOTE: The coupling is the mechanical connection between the pump shaft and the electric motor armature shaft. It may have been removed with the motor.

3.Insert the pump drive coupling onto the end of the pump shaft and fill coupling cavity with lubricant (P/N 990-638). See Figure6-64.

4.Rotate the pump or motor shafts to make sure the motor shaft fits correctly into the coupling.

5.Install the new motor onto the adapter body. Rotate further if necessary until the motor contacts the adapter body.

NOTE: There is an indexing pin on the end of the motor housing that fits into a hole in the adapter body to make sure the motor mounting screws align with the threaded holes in the adapter body. See Figure6-65.

6.Insert the screws into the motor end plate, through the motor and into the adapter body. See Figure6-66.

7.Make sure the motor is mating flush with the adapter body and torque screws to 6.3 to 7.4 ft lbs (8.5 to 10 Nm) maximum.

8.Install the solenoid.

9.Install the hydraulic unit. See “Hydraulic Unit” on page 6-77.

Raymond® Walkie Pallet Truck Maintenance Manual

Cold Storage Conditioning

New Raymond Walkie Pallet Trucks to be used in a cold storage environment are equipped at the factory with cold storage components for Cooler and Freezer applications.

Caution

When a truck is to be installed in a cold storage environment, change the fluid in the hydraulic reservoir and the drive unit according to the following items.

Classes of Cold Storage

Raymond Walkie Pallet Trucks can be conditioned for two classes of cold storage:

Cooler

•Environment where temperatures fluctuate from 20 °F (-7°C) to 70 °F (21 °C) in a continuous duty cycle.

•Application where the truck goes in and out of the freezer for short periods of time.

Freezer

•Environment where temperatures fluctuate from -20 °F (-29° C) to 40 °F (4 ° C).

•Application where truck operates continuously in a temperature of -20 °F (-29 °C).

For a listing of the recommended fluids see “Torque Chart - Standard” on page A-3.

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