Model 4700 Maintenance Manual

Section 7.Component Procedures

Mast Mast Removal and Installation chassis. Torque the mast to chassis securing bolts to 36 ft. lb. (49Nm).

7.Connect the main hydraulic hose at the base of the mast.

8.Connect the auxiliary supply hoses at the sides of the mast.

9.Install the screws, lock washers, and plate securing the pins through the tilt cylinder yoke and mast mounting brackets.

10.Jack the truck enough to remove the blocks, then lower to the floor.

11.Remove the sling from the top of the mast.

12.Grease the mast mounting points at the tilt cylinder and the frame.

13.Install forks.

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

15.Bleed the hydraulic system. Refer to “Bleeding the Hydraulic System” on page7-60.

16.Test the operation of the lift truck before returning the lift truck to service.

Single Traction Motor Trucks Removal

1.Park the lift truck on a level surface and engage the parking brake. Lower the carriage completely.

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

3.Block the steerable wheels to prevent truck movement.

4.Remove forks.

5.Double wrap a sling around the top of the mast. Attach a suitable lifting device to the mast and lift until the sling is snug.

6.Tilt the mast forward to access the hardware securing the base of the mast to the drive unit. Remove hardware. See Figure7-83.

Publication 1160093, Issued: 20 May 2013

9.Slowly lift the mast away from the truck.

10.Slowly lower the mast until it lays flat on the floor.

Installation

1.Double wrap a sling around the top of the mast. Attach a suitable lifting device to the mast and slowly lift the mast to vertical.

2.Slowly move the mast toward the lift truck, aligning the mast mounts.

3.Tilt the mast forward to access the mast base and drive unit. Secure the mast base to the drive unit.

4.Connect the main hydraulic hose at the base of the mast.

5.Install pins securing mast to tilt cylinders.

6.Jack the truck enough to remove the blocks, then lower to the floor.

7.Remove the sling from the top of the mast.

8.Grease the mast mounting points at the tilt cylinder and the frame.

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

10.Bleed the hydraulic system. Refer to “Bleeding the Hydraulic System” on page7-60

11.Test the operation of the lift truck before returning the lift truck to service.

Publication 1160093, Issued: 20 May 2013

Model 4700 Maintenance Manual

Section 7.Component Procedures

Mast Guide Shoe (Puck) Adjustment - TF/TT Mast

Guide Shoe (Puck) Adjustment - TF/TT Mast

Adjust mast guide shoe clearance to 0.008 to 0.016 in. (0.2 to 0.4 mm). See Figure7-86.

Figure 7-86.Guide Shoe Adjustment

Adjustment Screw to 0.016 in. (0.2 to 0.4 mm) clearance

Publication 1160093, Issued: 20 May 2013 7-71

Section 7.Component Procedures

Model 4700 Maintenance Manual

Fork Carriage - TF/TT

Mast Removal

1.Elevate the carriage above the free lift cylinders to gain access to the upper and lower carriage stop bolts. See Figure7-87.

7.Loosen the center hose cover bracket to allow the hoses to move back.

8.Use a 19 mm wrench to remove the carriage chain anchor nuts. With the chain anchor nuts removed, use the hoist to lower the carriage to the floor.

NOTE : Only the rollers hold the carriage to the telescopics at this time. Secure the carriage so it does not fall when the inner telescopic is lifted up.

9.Use the lift truck’s hydraulic system to elevate the telescopics until the inner telescopic is lifted off the carriage. Once the carriage is free from the inner telescopic, back the truck away from the carriage.

Lift the carriage out of the top of the mast. With the strap and hoist attached to the carriage, and the chain anchor nuts removed, move the hoses and chains out of the way. Use the hoist to lift the carriage out of the top of the mast, then lower the carriage to the floor. See Figure7-89.

3.Remove the four carriage stop bolts. See Figure7-87.

4.Remove the hose retaining clamps (if present).

5.Remove the attachment hose reel and hoses (if present).

6.Disconnect and plug the sideshift hoses.

Installation

Publication 1160093, Issued: 20 May 2013

Fork Carriage - TF/TT Mast Mast 7-72