Snorkel UL25, Parts & Service Manual

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UL-25/32/40 Portable Personnel Lifts 2-9
Maintenance
Section
2.5
#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
®
242 or equivalent on the threads.
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
®
242 or equivalent on the threads.
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 25 cm (10") 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
®
242 or equivalent on the threads.
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 assembly.
Be sure not to pull the strap that is attached to the top
of mast #5.
2.5 Mast Assembly (Cont.)
4. Disconnect chain from top of #2 mast.
5. Remove cylinder by following instructions in
Section 2.7
.
#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 2-7)
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 30 -38 cm (12-15").
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 30 -38 cm (12-15").
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 2.6.
2.5