JLG 800A_AJ Service Manual - Manual (Page 305)

SECTION 5 - HYDRAULICS
3120858 – JLG Lift – 5-23
NOTE: *Steer cylinder spanner nut is tightened as per Spec.
"CYR" Cylinder spanner nut tightening procedure.
Pressurize cylinder on retract to 80/100 psi to push
rod guide firmly against the round retaining ring.
(Apply 1 drop of loctite #242, 2 places, at 180° apart.
Hand tighten nut, then tighten 1/4 turn with spanner
wrench.)
Table 5-1. Cylinder Torque Specifications
CYLINDER HEAD AND TAPERED BUSHING
TORQUE SPECIFICATIONS
Description
Head
Torque Value
(Wet)
Tapered Bushing
Torque Value
(Wet)
Upper Lift Cylinder 420 ft. lbs. (570 Nm) 60 ft. lbs. (81 Nm)
Lower Lift Cylinder 420 ft. lbs. (570 Nm) 30 ft. lbs. (41 Nm)
Articulating Lift Cyl. 30 ft. lbs. (41 Nm) 5 ft. lbs. (9 Nm)
Articulating Slave
Cylinder (AJ) 50 ft. lbs. (68 Nm) 9 ft.lbs. (12 Nm)
Articulating Master
Cylinder (AJ) 50 ft. lbs. (68 Nm) 9 ft. lbs. (12 Nm)
Master Cylinder
(800A) 50 ft. lbs. (68 Nm) 5 ft. lbs. (9 Nm)
Upper Boom
Tele.Cyl. 50 ft. lbs. (68 Nm) 9 ft. lbs. (12 Nm)
Tower Tele. Cylinder 80 ft. lbs. (109 Nm) 9 ft. lbs. (12 Nm)
Upright Level Cyl. 420 ft. lbs. (570 Nm) 60 ft. lbs. (81 Nm)
Lockout Cylinder 80 ft. lbs. (109 Nm) 9ft. lbs. (12 Nm)
Slave Cylinder
(800A) 30 ft. lbs. (41 Nm) 9 ft. lbs. (12 Nm)
Slave Cylinder
(800AJ) 50 ft. lbs. (68Nm) 9 ft. lbs. (12Nm)
*Steer Cylinder Piston Nut Torque Specifications.
description ft. lbs Nm
Nut, rod 275/330 ft. lbs. 372/447 Nm
Table 5-2. Holding Valve Torque Specifications
HOLDING VALVE TORQUE SPECIFICATIONS
Description Torque Value
SUN - 7/8 HEX m20 X 1.5 this. 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)