HYDRAULIC LINE INSTALLATION
1. For a metal tube to hose installation, install the tube
and tighten all bolts finger tight.
2. Tighten the bolts at the rigid end.
3. Install the hose and tighten all bolts finger tight.
4. Put the hose in a position so that it does not make
contact with the machine or another hose.
5. Tighten the bolts on both connections.
6. Start the engine.
7. Move the implement control levers to all positions.
8. Look at the hose during movement of the
implement. Make sure hose is not in contact with
the machine or other hoses.
9. Shut off the engine.
10. If necessary, put the hose in a new position where it
will not make contact when the implement is moved.
ASSEMBLY OF FITTINGS WITH STRAIGHT
THREADS AND O-RING SEALS
This type of fitting is used in many applications. The tube
end of the fitting will be different in design so that it can
be used in many different applications. However, the
installation procedure of the fitting is the same. If the tube
end of the fitting body is the same as in the illustration
(either an elbow or a straight body) it will be necessary to
assemble the sleeve on the tube before connecting the
tube to the end.
1. Put locknut (3), backup washer (4) and O-ring seal
(5) as far back on fitting body (2) as possible. Hold
these components in this position. Turn the fitting
into the part it is used on until backup washer (4) just
makes contact with the face of the part it is used on.
2. To put the fitting assembly in its correct position, turn
the fitting body (2) out (counterclockwise) a
maximum of 359
û
. Tighten locknut (3) to the torque
shown in the correct chart for the fitting used.
NOTE: If the fitting is a connector (straight fitting), the
hex on the body takes the place of the locknut. To
install this type fitting, tighten the hex against the face
of the part it goes into.
TORQUES FOR FLARED AND O-RING FITTINGS
The torques shown in the charts that follow are to be
used on the nut part of 37
û
Flared, 45
û
Flared and
Inverted Flared fittings (when used with steel tubing),
O-ring plugs, O-ring fittings and swivel nuts when
used in applications to 3000 psi (20 700 kPa).
HOSE CLAMP-BAND TYPE
4 of 7
FITTING INSTALLATION
5
3
1
2
4
6
(1) End of fitting body (connects to tube). (2) Fitting body.
(3) Lock-nut. (4) Backup washer. (5) O-ring seal. (6) End of fitting
that goes into other part.
ELBOW BODY ASSEMBLY
IDAS002B
IDAS003B
CLAMP
WIDTH
7.9 mm
(.312 in)
13.5 mm
(.531 in)
15.9 mm
(.625 in)
TORQUE ON
NEW HOSE
0.9
± 0.2 N
i
m
8
± 2 lb
i
in
4.5
± 0.5 N
i
m
40
± 5 lb
i
in
7.5
± 0.5 N
i
m
65
± 5 lb
i
in
RETIGHTENING
TORQUE
0.7
± 0.2 N
i
m
6
± 2 lb
i
in
3.0
± 0.5 N
i
m
25
± 5 lb
i
in
4.5
± 0.5 N
i
m
40
± 5 lb
i
in
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