Snorkel UL25, Parts & Service Manual

Page: 41 / 94

2-14
Maintenance
Section
UL-25/32/40 Portable Personnel Lifts
2.6 Cylinder Assembly (Cont.)
INSTALLATION (CONT.)
17. Using a suitable lifting device, raise the lift to its
normal vertical position.
18. Bleed air from cylinder by cycling the mast to full
extension several times. The cylinder is self bleeding;
air will be forced out of the cylinder during the lower-
ing cycle.
19. If necessary, remove pinch shield and check alignment
of cylinder within mast assembly by peering down the
mast with a flashlight. The cylinder guide bearings
must not be touching the inside surface of #6 mast.
The cylinder may be moved left or right by tightening
the left or right tie rod nuts respectively.
Keep hands clear of the mast assembly when
the pinch shield is removed for inspection
purposes; pinching injury to hands may
result.
Never operate a machine with the pinch
shield removed, except for inspection.
2.7 Torque Specifications
HYDRAULIC COMPONENTS
Use the following values to torque hydraulic components
used on Snorkel Work Platforms.
Note: Always lubricate threads with clean hydraulic oil
prior to installation.
CARTRIDGE
POPPET
(Ft/Lbs Nm)
N/A N/A
N/A N/A
25-30 34-41
35-40 47-54
85-90 115-122
130-140 176-190
Table 2-2: Hydraulic Component Torque
TYPE:
SAE PART
SERIES
#4
#6
#8
#10
#12
#16
FITTINGS
(Ft/Lbs Nm)
N/A N/A
10-20 14-27
25-30 34-41
35-40 47-54
85-90 115-122
130-140 176-190
HOSES
(In/Lbs Nm)
135-145 15-16
215-245 24-28
430-470 49-53
680-750 77-85
950-1050 107-131
1300-1368 147-155
Coil nuts: 3 Nm (30 In/Lbs)
FASTENERS
Use the following values to torque fasteners used on Snorkel
Work Platforms unless a specific torque value is
called out for the part being installed.
WIDTH
ACROSS
FLATS
7 /
16
1
/
2
9
/
16
5 /
8
3 /
4
15 /
16
1 1 /
8
1
5
/
16
1
1
/
2
Table 2-3: Bolt Torque
TORQUE
VALUE
ENGLISH METRIC
12 Nm
22 Nm
41 Nm
68 Nm
102 Nm
203 Nm
339 Nm
542 Nm
813 Nm
110 In/Lbs
190 In/Lbs
30 Ft/Lbs
50 Ft/Lbs
75 Ft/Lbs
150 Ft/Lbs
250 Ft/Lbs
400 Ft/Lbs
600 Ft/Lbs
American National
Standard-UNF (fine)
THREAD
SIZE
1 /
4
5 /
16
3 /
8
7 /
16
1
/
2
5
/
8
3 /
4
7 /
8
1
2.7