Hydraulic Fitting Torques; Table 3-4: Torque For Jic And Sae Female Swivel Nuts; Table 3-5: Torque For Non-Adjustable O-Ring Fittings - JLG Lull 1044C-54 II Series Service Manual

General Maintenance

Hydraulic Fitting Torques

JIC and SAE Female
Swivel Nuts
Non-adjustable O-ring
Fittings
3-14
It is recommended that the nut be torqued to the approximate minimum
value. If leakage occurs, tighten nut without exceeding maximum torque
value.
Note:
Use two wrenches to tighten hydraulic line nuts.

Table 3-4: Torque for JIC and SAE Female Swivel Nuts

SAE Port
Size
Thread Size
-4 7/16-20
-5 1/2-20
-6 9/16-18
-8 3/4-16
-10 7/8-14
-12 1 1/16-12
-16 1 5/16-12
-20 1 5/8-12
-24 1 7/8-12
-32 2 1/2-12
1. Number of flats on nut to be turned past finger tight. This
method will produce the approximate torque.
To install straight thread, non-adjustable O-ring fittings:
1. Check condition of O-ring and replace as necessary. Do not install a
fitting with a damaged O-ring.
2. Lubricate O-ring with clean hydraulic fluid and torque per Table 3-5.

Table 3-5: Torque for Non-adjustable O-ring Fittings

Size
-2
-4
-6
-8
-10
-12
-16
-20
-24
Approx. Min.
Max. Torque
Torque
130 in-lbs 150
165 " 195
235 " 265
44 ft-lbs 48
50 " 58
79 " 88
117 " 125
158 " 175
188 " 213
250 " 283
SAE Port
Min. Torque Max. Torque
Thread Size
5/16-24 85 in-lbs
7/16-20 205 "
9/16-18 25 ft-lbs
3/4-16 46 "
7/8-14 85 "
1 1/16-12 105 "
1 5/16-12 154 "
1 5/8-12 213 "
1 7/8-12 238 "
1
Flats
in-lbs 2
" 2
" 1 1/4
ft-lbs 1
" 1
" 1
" 1
" 1
" 1
" 1
95 in-lbs
235 "
29 ft-lbs
50 "
95 "
115 "
166 "
237 "
262 "
31200079