JLG 660SJ Service Manual - Manual (Page 220)

SECTION 5 - HYDRAULICS
5-10 – JLG Lift – 3121202
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
Description
Head Torque
Value (Wet)
Tapered Bushing
Torque Value
(Wet)
Lift Cylinder 240 ft. lbs.
(325 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)