JLG 660SJ Service Manual - Manual (Page 140)

SECTION 5 - HYDRAULICS
5-8 – JLG Lift – 3120840
IF THE CYLINDER IS TO BE TESTED PRIOR TO INSTALLATION ON
THE MACHINE, EXTREME CARE SHOULD BE USED TO INSURE
THAT THE OUTER END OF THE ROD IS SUPPORTED. USE
EITHER A TRAVELING OVERHEAD HOIST, FORK-LIFT, OR OTHER
MEANS TO SUPPORT THE OVERHANGING WEIGHT OF THE
EXTENDING ROD.
Table 5-1. Cylinder Head and Tapered Bushing Torque
Specifications. (S Models)
Description
Head Torque
Value (Wet)
Tapered Bushing
Torque Value
(Wet)
Lift Cylinder 275 ft. lbs.
(373 Nm)
30 ft. lbs.
(41 Nm)
Articulating Lift
Cylinder 30 ft. lbs.
(41 Nm)
5 ft. lbs.
(9 Nm)
Slave Cylinder 30 ft. lbs.
(41 Nm)
5 ft. lbs.
(9 Nm)
Master Cylinder 30 ft. lbs.
(41 Nm)
5 ft. lbs.
(9 Nm)
Telescope
Cylinder 50 ft. lbs.
(68 Nm)
9 ft. lbs.
(12 Nm)
Lockout Cylinder 80 ft. lbs.
(109 Nm)
N/A
Articulating Slave
Cylinder 50 ft. lbs.
(68 Nm)
9 ft. lbs.
(12 Nm)
Articulating
Master Cylinder 50 ft. lbs.
(68 Nm)
9 ft. lbs.
(12 Nm)
Steer Cylinder Piston Nut Torque Specifications
Steer Cylinder LBS. NM
150 ft. lbs 204 Nm
Table 5-2. Holding Valve Torque Specifications
Description Torque Value
SUN - 7/8 HEX M20 X 1.5 THDS. 30-35 ft. lbs.
(41-48 Nm)
SUN - 1 1/8 HEX 1 -14 UNS THDS. 45-50 ft. lbs.
(61-68 Nm)
SUN - 1 1/4 HEX M36 X 2 THDS. 150-160 ft. lbs.
(204-217 Nm)
RACINE - 1 1/8 HEX 1 1/16 - 12 THDS. 50-55 ft. lbs.
(68-75 Nm)
RACINE - 1 3/8 HEX 1 3/16 - 12 THDS. 75-80 ft. lbs.
(102-109 Nm)
RACINE - 1 7/8 HEX 1 5/8 - 12 THDS. 100-110 ft. lbs.
(136-149 Nm)
Table 5-3. Cylinder Head and Tapered Bushing Torque
Specifications. (A Models)
Description
Head Torque
Value (Wet)
Tapered Bushing
Torque Value
(Wet)
Upper Lift
Cylinder 80 ft. lbs.
(109 Nm)
9 ft. lbs.
(12 Nm)
Lower Lift
Cylinder 420 ft. lbs.
(570 Nm)
30 ft. lbs.
(41 Nm)
Articulating Lift
Cylinder 30 ft. lbs.
(41 Nm)
5 ft. lbs.
(9 Nm)
Articulating Slave
Cylinder 50 ft. lbs.
(68 Nm)
9 ft. lbs.
(12 Nm)
Articulating
Master Cylinder 50 ft. lbs.
(68 Nm)
9 ft. lbs.
(12 Nm)
Master Cylinder 30 ft. lbs.
(41 Nm)
5 ft. lbs.
(9 Nm)
Upper Telescope
Cylinder 30 ft. lbs.
(41 Nm)
9 ft. lbs.
(12 Nm)
Tower Telescope
Cylinder 30 ft. lbs.
(41 Nm)
9 ft. lbs.
(12 Nm)
Upright Level
Cylinder 275 ft. lbs.
(373 Nm)
30 ft. lbs.
(41 Nm)
Lockout Cylinder 80 ft. lbs.
(109 Nm)
N/A
Slave Cylinder 30 ft. lbs.
(41 Nm)
9 ft. lbs.
(12 Nm)
Steer Cylinder Piston Nut Torque Specifications
Steer Cylinder LBS. Nm
150 ft. lbs 204 Nm