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. (49 Nm).
Figure 7-83.
Mast Base Hardware Mast Base Hardware
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 page 7-60.
7. Remove and cap the main hydraulic hose attached at the base of the mast. See Figure 7-84. Figure 7-84.
Disconnect Hose
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.
Hydraulic Hose
8. Remove pins securing mast to tilt cylinders. See Figure 7-85.
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 Figure 7-83.
Publication 1160093, Issued: 20 May 2013
7-69
