3-24
LX31/41 Electric Work Platform
M
AINTENANCE
Section
3.19
3.19 L
IFT
C
YLINDER
Removal
1. Raise and block the elevating assembly (see “3.6
Blocking Elevating Assembly” on page 3-6).
2. Open emergency lowering valve to be sure all
pressure is out of the lift cylinder.
3. Remove and cap both hoses and fittings.
4. Remove the down valve and cable assembly.
5. Support the lift cylinder with a suitable lifting
device to prevent falling.
6. Remove the retaining bolts from the upper and
lower pivot pins.
7. Drive out the pivot pins, upper one first, then the
lower one.
8. Hoist the cylinder out of the elevating assembly
from the front. DO NOT sling the cylinder by the
rod end pivot, this will cause the cylinder to
extend when hoisted.
9. Inspect the rod, head, piston, and tube for
scratches, pits, or polishing. Check seal groves
and sealing surfaces. Scratches or pits deep
enough to catch the fingernail are unacceptable,
Installation
NOTE: Before installing the cylinder, check the
pins and bearings for excessive wear.
Replace if necessary.
1. Using a suitable lifting device, lower the cylinder
into the elevating assembly from the front. DO
NOT sling the cylinder by the rod end pivot, this
will cause the cylinder to extend when hoisted.
2. Align the pivots and install the pivot pins, lower
one first, then the upper one.
3. Install the retaining bolts into the pivot pins.
4. Install the down valve and cable assembly. Adjust
the cable to stop on the collar of the cable jacket,
before the down valve reaches the full extent of
it's pull. The down valve may leak if the cable is
allowed to pull the spool of the valve beyond it's
limit.
5. Install the hoses.
6. Lift and lower the machine for several cycles to
work out the air. Check for leaks, repair as neces-
sary.
1. Rod Wiper
2. Rod Seal
3. Wear Ring, 3 required
4. O-ring
5. Head
6. Backup Ring
7. O-ring
8. Rod Weldment
9. Tube Weldment
10. Spacer
11. O-ring
12. Locknut
13. Bushing
14. Orifice
15. Cast Iron Ring
16. Wear Ring, 2 required
17. Piston
18. Piston Seal
Seal Kit Number: 067635-010
Figure 3-24: Lift Cylinder Cross Section
Summary of Contents for LX31
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Page 6: ...ii LX31 41 Electric Work Platform FORWARD NOTES ...
Page 24: ...2 12 LX13 41 Electric Work Platform MACHINE PREPARATION OPERATION Section 2 10 NOTES ...
Page 49: ...LX31 41 Electric Work Platform 3 25 MAINTENANCE Section 3 19 NOTES ...
Page 66: ...4 16 LX31 41 Electric Work Platform TROUBLESHOOTING Section 4 9 ...
Page 74: ...5 8 LX31 41 Electric Work Platform SCHEMATICS Section 5 4 ...
Page 115: ...LX31 41 Electric Work Platform 6 41 ILLUSTRATED PARTS BREAKDOWN Section 6 1 ...
Page 117: ...LX31 41 Electric Work Platform 6 43 ILLUSTRATED PARTS BREAKDOWN Section 6 1 ...
Page 118: ...6 44 LX31 41 Electric Work Platform ILLUSTRATED PARTS BREAKDOWN Section 6 1 NOTES ...
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