Section 7.Component Procedures

Model 4700 Maintenance Manual

Motor Temperature Switch Repair Electrical Components

Motor Temperature Switch Repair

Temperature switches for the drive and pump motors are integral to the motor. When a motor temperature switch fails, it can be replaced using the procedures that follow.

Traction Motor

1.Turn the key switch OFF and disconnect the battery connector.

2.Disconnect all cables and connectors at the motor.

3.Mark the position of the top end bell and bottom end bell relative to the stator, then remove the snap ring.

4.Remove the four bolts that secure the top end bell to the bottom end bell.

5.Remove the top end bell. Use care that th e encoder bearing remains in the bottom end bell to reduce the chance of damaging the bearing.

6.Install a new temperature switch using the high temperature silicone (neutral curing) su pplied with the temperature sensor. Mount the sensor close to the location of the original. Secure the cable with a cable tie to one of the power leads.

7.Install the top end bell in the position that was previously marked. Verify corre ct stator installation and install snap ring.

8.Secure the top end bell to the bottom end bell using the four bolts previous ly removed.

9.Reconnect all connectors and power cables. Torque motor cable securing nut s to 18 ft. lb. (24Nm).

10.Reconnect the battery connector and turn the key switch ON.

Pump Motor

1.Turn the key switch OFF and disconnect the battery connector.

2.Disconnect the temperature swit ch co nnector.

3.Disconnect cables and motor harness connections, making su re that you note locations for reassembly later.

4.Separate the pump assembly from the lif t pump motor and remove lift pump motor.

5.Remove the four bolts that secure the top end bell to the bottom end bell.

6.Remove the top end bell. Use care that the bearing remains in the bottom end bell to reduce the chance of damaging the bearing.

7.Install a new temperature sensor using th e high tem perature silicone (neutral curing) supplied with the temperature switch. Mount the sensor close to the location of the original. Secure the cable with a cable tie to one of the power leads.

8.Carefully press the top end bell to the st ator. Do not pinch the cables or allow contact with the rotor. Verify correct stator installation.

9.Secure the top end bell to the bottom end bell using the four bolts previously removed.

10.Reinstall pump motor to the pump assembly.

11.Reconnect connector and power cables.

12.Reconnect the battery connector and turn the key switch ON.

Publication 1160093, Issued: 20 May 2013

Cold Storage Conditioning

NOTE : Conversion of lift trucks for cold storage operation requires prior Raymond approval via Form S207.

Lift trucks operated in a cold storage environment require the following:

•All-weather hydraulic fluid (P/N1017238)

NOTE : Do not add any additive to this hydraulic fluid.

•Sealed seat switch (P/N 312347-000).

•Sealed electrical connectors. See “Connector Sealing” .

Connector Sealing

Fill sockets and the front and back of both halves of unsealed connectors with cold storage sealing compound (P/N990-445). Connect wires and connectors. Coat the outside and where connectors attach to the circuit board. Coat terminals and terminal strips.

NOTE : Self-sealing AMP connectors (reference page7-43) do not need sealing treatment.

Corrosion Inhibitor Coating

Coat or spray bare metal surfaces listed below with Corrosion Inhibitor Coating (P/N990-644):

•Reach cylinder cotter pins

•Main and free lift chain pulleys and shafts

•Main and free lift chain anchors and threaded pins