JLG X23J - X700AJ Service Manual - Manual (Page 143)

SECTION 3 - CHASSIS & TURNTABLE
3-116 – JLG Lift – 3121448
1) F
M
for hydraulic bolt-tensioning cylinder pretension ed
to 85% of yield strength.
Table 3-8.
1) F
M
for hydraulic bolt-tensioning cylinder pretensioned
to 85% of yield strength.
DETERMINING THE TILTING CLEARANCE
Tilting clearance increases as raceway system wear
increases. To determine the increase in tilting clearance a
basic measurement must be executed in installed status
and prior to first-time operation. This is the only way to
determine changes.
Figure 3-195. Determine tilting clearance
1. Upper mounting structure
2. Tilting direction
3. Main load-carrying zone
4. Lower mounting structure
Figure 3-196. Measurement setup
5. Dial gauge
6. Upper mounting structure
Table 3-7.
Mounting
bolt dimen-
sions
Mounting pretension force
F
M
1)
Strength class 10.9 in
kN lbs
M24 282 63396
M27 367 82505
M30 448 100714
M33 554 124544
M36 653 146800
M42 896 201429
M45 1043 234476
M48 1177 264600
M52 1405 315857
M56 1622 364640
M60 1887 424215
M64 2138 480642
M68 2441 548759
Mounting
bolt dimen-
sions
Mounting pretension force
F
M
1)
Strength class 10.9 in
kN lbs
1 – 8 UNC 301 67668
1 1/8 – 7 UNC 379 85203
1 1/4 – 7 UNC 481 108133
1 3/8 – 6 UNC 573 128816
1 1/2 – 6 UNC 697 156692
1 5/8 – 6 UNC 832 187041
1 3/4 – 5 UNC 942 211770