Cylinder Removal (Figure 4-9); Installation - Upright ULII-25 Service & Parts Manual

1
5
4
1.Tensioner Bracket (62739-000)
2.Tie Rod Tensioners (62738-000)
3.Tie Rods
Figure 4-9: Cylinder Assembly Installation

CYLINDER REMOVAL (Figure 4-9)

Using a suitable lifting device, lower the work platform
into a horizontal position (Figure 4-5). If possible, place
the machine onto a sturdy work table using a forklift.
Never attempt to lower lift into a horizon-
tal position without the use of a suitable
lifting device; bodily injury or damage to
the machine may result.
1. Remove cylinder mounting plate fasteners and
retaining ring.
2. Remove tie rod nuts, count the number of turns
required to bring the nut flush with the tie rod end
and record for reference during installation. The
tension on the tie rods maintains the left / right
positioning of the cylinder within the mast assembly,
reinstalling the nuts with the proper tension will
speed up adjustment later.
3. Remove the cylinder mounting plate. Be careful not
to allow the tie rods to suck back inside of the mast
assembly, replace the nuts on the tie rod ends
temporarily to prevent this.
4. Remove hydraulic line from the cylinder fitting and
cap the cylinder fitting to prevent contaminants from
entering the cylinder.
5. Remove sequence strap retainers on the top of #3
and #2 masts.
6. Remove front and rear mast access plates from the
bottom of the #1 mast.
UL-25/32/40/48 Portable Personnel Lifts
Maintenance
2
3
6
4.Bottom Casting, Mast #2
5.Bottom Casting, Mast #3
6.Cylinder
7. Remove the screws and washers, attaching the #2
and #3 bottom castings to the #2 and #3 mast
assemblies.
8. While keeping tension on the tie rods, slide the
cylinder and #2 and #3 bottom castings out the
bottom of the UL Lift far enough to expose both
castings.
9. Install cylinder Tensioner Brackets, 62739-000 on
#2 and #3 bottom castings. Remove tie rod nuts
and install the Tie Rod Tensioners, 62738-000.
Remove all slack from the chains with the Tie Rod
Tensioners.
10. Remove cylinder assembly from mast assembly.

INSTALLATION

NOTE: Cylinder assembly must have Tension Brack-
ets, Tensioner Spacer and Tie Rod Tensioners in-
stalled to remove slack from chain.
1. Slide cylinder assembly into mast assembly until #3
bottom casting is at the bottom of the mast assembly.
2. Install the screws and washers attaching the #3
bottom casting to the #3 mast assemby.
3. Remove cylinder Tensioner Brackets from #2 and
#3 bottom castings and Tie Rod Tensioners from tie
rods. Install tie rod nuts finger tight.
4. While maintaining tension on the tie rods to keep
slack out of the chains, slide cylinder assembly
completely into the mast assembly.
5. Install the screws and washers attaching the #2
bottom casting to the #2 mast assembly.
6. Install front and rear mast cover plates on the
bottom of #1 mast.
7. Fish #4 strap between #3 and #2 mast with fish tape.
8. Slide #4 strap through #2 casting.
9. Fish #3 strap between #2 and #1 mast with fish tape.
10. Install strap #4 to #2 top casting.
11. Install strap #3 to #1 top casting.
12. While maintaining tension on the sequencing straps,
install strap retainers using Loctite
lent on the threads of the retainer screws.
13. Reconnect hydraulic line.
14. Remove nuts from tie rod ends and set the cylinder
mounting plate into place. Secure mounting plate
with fasteners.
15. Install tie rod nuts flush with tie rod ends, torque each
nut the exact number of turns used to remove it.
16. Reinstall retaining ring.
Section
4.6
242 or equiva-
®
4-13