Installation Of Adjustable Fittings In Straight Thread O-Ring Bosses; Standard Torque Data For Hydraulic Tubes And Fittings; Tube Nuts; O-Ring Boss Plugs Adjustable Fitting - New Holland 615 Operator's Manual

INSTALLATION OF ADJUSTABLE
FITTINGS IN STRAIGHT THREAD O-RING
BOSSES
1. Lubricate the O-ring by coating it with a light oil
or petroleum. Install the O-ring in the groove
adjacent to the metal backup washer which is
assembled at the extreme end of the groove, 4.
2. Install the fitting into the SAE straight thread boss
until the metal backup washer contacts the face
of the boss, 5.
NOTE: Do not over tighten and distort the metal
backup washer.
3. Position the fitting
(counterclockwise) up to a maximum of one turn.
Holding the pad of the fitting with a wrench,
tighten the locknut and washer against the face
of the boss, 6.

STANDARD TORQUE DATA FOR HYDRAULIC TUBES AND FITTINGS

FOR 37° FLARED FITTINGS
TUBING
SIZE
OD
mm In.
4 6.4 1/4
5 7.9 5/16
6 9.5 3/8
8 12.7 1/2
10 15.9 5/8
12 19.1 3/4
14 22.2 7/8
16 25.4 1
20 31.8 1-1/4
24 38.1 1-1/2
32 50.8 2
These torques are not recommended for tubes of
12.7 mm (1/2 in) OD and larger with wall thickness of
0.889 mm (0.035 in) or less. The torque is specified
for 0.889 mm (0.035 in) wall tubes on each
application individually.
Before installing and torquing 37° flared fittings,
clean the face of the flare and threads with a clean
SECTION 4 - MAINTENANCE
by turning out

TUBE NUTS

TORQUE
THREAD NEWTON
SIZE METERS
Min. Max.
7/16-20 12 16
1/2-20 16 20
9/16-18 29 33
3/4-18 47 54
7/8-14 72 79
1-1/16-12 104 111
1-3/16-12 122 136
1-5/16-12 149 163
1-5/8-12 190 204
1-7/8-12 217 237
2-1/2-12 305 325
4-3
O-RING BOSS PLUGS
ADJUSTABLE FITTING
LOCKNUTS, SWIVEL
FOOT NEWTON
POUNDS METERS
Min. Max. Min. Max.
9 12 8
12 15 14
21 24 20
35 40 34
53 53 47
77 82 81
90 100 95
110 120 108
140 150 129
160 175 163
225 240 339
solvent or Loctite cleaner and apply hydraulic sealant
Loctite no. 569 to the 37° flare and the threads.
Install fitting and torque to specified torque, loosen
fitting and retorque to specifications.
JIC - 37° SEATS
TORQUE
FOOT
POUNDS
Min. Max.
14 6 10
20 10 15
27 15 20
41 25 30
54 35 40
95 60 70
109 70 80
122 80 90
158 95 115
190 120 140
407 250 300
1