Removal Of Elevating Assembly; Installation Of Elevating Assembly - Upright TM12 Service Manual

Elevating Assembly
R
E M O V A L O F
Refer to Figure 2-16: "Elevating Assembly," on page 2-19.
1. Disconnect the batteries using the battery disconnect in front of the batteries in the battery tray.
2. Remove the platform mast cover (5), and the controller cover plate (6).
3. Detach the control cable inside the controller (7), remove the cable clamp in the top of the platform
mast (4), and feed the cable into the second inner mast section (3).
4. Using a suitable hoisting device, carefully raise the platform mast (4) until you can access the outer
chain anchor (10a).
5. Disconnect the outer chain anchor from the platform mast, but leave the anchor attached to the chains.
6. Remove the lower mast bearings from the platform mast. The front two mast bearings may be removed
by drilling out the lower pop rivets that retain the bearings.
7. Raise the platform mast straight up and off of the remaining mast sections.
8. Lay the chain that was detached from the platform mast over the top of the upper cylinder mount (17),
and place it down inside the second inner mast section.
9. Repeat Step 4 through Step 7 on the second inner mast section (3). The lower mast bearings are
removed by unscrewing the two screws on each bearing.
10. The upper chain set may now be removed by detaching the upper chain/inner pulley mounts from the
first inner mast section (2). Carefully set the chain set aside on a clean surface.
11. Remove the single bolt that attaches the cylinder to the upper cylinder mount (17).
12. Using a suitable hoisting device, carefully raise the first inner mast section (2) up several inches.
13. Lay the remaining chain set over the top of the cylinder, and place it down inside the inner mast section.
14. Remove the lower mast bearings from the first inner mast section.
15. Raise the first inner mast section straight up and off of the remaining base mast section.
16. The inner chain set may now be removed.
17. If it is necessary to remove the base mast section, remove the nine bolts that secure it to the chassis. It
may be required to remove the lift cylinder to provide easier access to the bolts (see "Lift Cylinder" on
page 2-17).
I
N S T A L L A T I O N O F
Refer to Figure 2-16: "Elevating Assembly," on page 2-19.
Installation of the elevating assembly is the reverse of removal.
• Torque the nine bolts that retain the base mast section to 68 N-m (50 ft. lbs.).
• For all of the cap screws that attach the chain anchors to the mast sections, apply Locktite #242 to the
screw threads and torque to 12 N-m (107 in-lbs).
• For all of the screws that attach the mast bearings, apply Locktite Retainer #405 to the screw threads.
Do not torque, simply tighten securely.
• Check elevating assembly for proper operation.
Page 2-22
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L E V A T I N G S S E M B L Y
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L E V A T I N G
Section 2 - Service and Repair
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S S E M B L Y
107099-002 TM12 Work Platform