Mast; Assembly - Upright ULII-25 Service & Parts Manual

4.5
4.5 Mast Assembly (Cont.)
4. Disconnect chain from top of #2 mast.
5. Remove cylinder by following instructions in Section 4.7.

#3 Mast

1. Remove sequence strap retainer on the top of #1 mast.
2. Remove the Allen head screws holding the top mast
bearings between the #2 and #3 mast. Remove the
top mast bearings.
3. Slide #3 mast out of #2 mast. As mast is removed,
the bottom four mast bearings will fall out; note
their orientation for re-assembly.
#2 Mast
1. Remove the Allen head screws holding the top mast
bearings between the #1 and #2 mast. Remove the
top mast bearings.
2. Slide #2 mast out of #1 mast. As mast is removed,
the bottom four mast bearings will fall out; note
their orientation for re-assembly.
ASSEMBLY (Figure 4-7)
Note: Use WD-40 lubricant as necessary to aid in
reassembly.
#2 Mast
1. Set #2 mast in place.
2. Install bottom lower bearings.
3. Install bottom upper bearings.
4. Slide #2 mast in all the way except 12-15" (30 -38 cm).
5. Install top bearings and secure with retaining screws
using Loctite 242 or equivalent on the threads.
®
6. Slide #2 mast in completely.
#3 Mast
1. Set #3 mast in place with the sequencing strap inside.
2. Install bottom lower bearings.
3. Install bottom upper bearings.
4. Slide #3 mast in all the way except 12-15" (30 -38 cm).
5. Install top bearings and secure with retaining screws
using Loctite 242 or equivalent on the threads.
®
6. Place a 10" (25 cm) long wood block between #3
and #2 masts, slide #3 mast down tight against
block. Pull sequencing strap completely out of the
bottom of assembly.
7. Install cylinder assembly by following instructions in
section 4.6.
UL-25/32/40/48 Portable Personnel Lifts
Maintenance
#4 Mast
1. Set #4 mast in place with the sequencing strap
inside and the chains on the bottom.
2. Install bottom lower bearings.
3. Install bottom upper bearings.
4. Slide mast #4 in, make sure chains are not twisted.
5. Install top bearings and secure with retaining screws
using Loctite
6. Install chains around #3 sheave and down through
#3 casting, secure to #2 casting with new roll pins.
7. Use a center punch to dimple pin hole after roll pins
are installed.
#5 Mast
1. Set #5 mast in place with the sequencing strap
inside.
2. Install bottom lower bearings.
3. Install bottom upper bearings.
4. Slide #5 mast in, make sure chains are not twisted.
5. Install top bearings and secure with retaining screws
using Loctite
6. Install chains around #4 sheaves and down through
#4 casting, secure to #3 casting with new roll pins.
7. Use a center punch to dimple pin holes after all roll
pins are installed.
8. Slide mast in, leaving 10" (25 cm) exposed.
#6 Mast
1. Set #6 mast in place with the sequencing strap inside.
2. Run the remaining sequencing strap (from platform
assembly) through the slot in the bottom of stage #6
and up through the inside. Leave just enough slack
on the outside to reach the attachment point at the
top of stage #5.
3. Install bottom lower bearings.
4. Install bottom upper bearings.
5. Slide #6 mast in, make sure chains are not twisted.
6. Install top bearings and secure with retaining screws
using Loctite
7. Install #6 chain around #5 sheave and through
casting, secure to #4 casting with new roll pins.
8. Use a center punch to dimple pin holes after all roll
pins are installed.
9. Pull the sequencing strap attached to the bottom of
mast #6 out through the bottom of the mast assem-
bly. Be sure not to pull the strap that is attached to
the top of mast #5.
242 or equivalent on the threads.
®
242 or equivalent on the threads.
®
242 or equivalent on the threads.
®
Section
4.5
4-9