Lull 1044C-54 Series II Service Manual User Manual
Page 59
General Maintenance
31200079
3-15
Adjustable O-ring Fittings
To install straight thread, 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.
3. Back off the locknut fully.
4. Screw fitting into port until backup washer contacts face of port.
5. Position fitting by unscrewing a maximum of one turn.
6. Hold the fitting in position with a wrench and torque locknut per Table
3-6.
Table 3-6: Torque for Adjustable O-ring Fittings
O-ring Plugs
To install straight thread O-ring plugs:
1. Check condition of O-ring and replace as necessary. Do not install a
plug with a damaged O-ring.
2. Lubricate O-ring with clean hydraulic fluid and torque per Table 3-7.
Table 3-7: Torque for O-ring Plugs
Size
SAE Port
Thread Size
Min. Torque Max. Torque
-2
5/16-24
60
in-lbs 70
in-lbs
-4
7/16-20
160
"
180
"
-6
9/16-18
25
ft-lbs 29
ft-lbs
-8
3/4-16
40
"
44
"
-10
7/8-14
58
"
63
"
-12
1 1/16-12
75
"
85
"
-16
1 5/16-12
109
"
121
"
-20
1 5/8-12
213
"
237
"
-24
1 7/8-12
238
"
262
"
SAE Port
Hollow Hex Head
Hex Head
Size
Thread Size Min. Torque Max. Torque Min. Torque Max. Torque
-2
5/16-24
30
in-lbs
40
in-lbs
85
in-lbs
95
in-lbs
-4
7/16-20
125
"
145
"
205
"
235
"
-6
9/16-18
210
"
230
"
25
ft-lbs
29
ft-lbs
-8
3/4-16
44
ft-lbs
48
ft-lbs
46
"
50
"
-10
7/8-14
70
"
80
"
85
"
95
"
-12
1 1/16-12
80
"
90
"
105
"
115
"
-16
1 5/16-12
129
"
141
"
154
"
166
"
-20
1 5/8-12
213
"
237
"
213
"
237
"
-24
1 7/8-12
238
"
262
"
238
"
262
"