Baroness LM551 Service Manual page 44

LM551
Hydraulic System
4. Fix the temporary tightening tool onto the
vise and apply hydraulic oil to the threads,
tapered part, and sleeve.
Bite Type Tube Fitting_005
5. Put the tube end onto the hole bottom of
the temporary tightening tool and tighten
the nut slowly to the point where the tube
can no longer be rotated by hand. This
point is called the "zero point."
Bite Type Tube Fitting_006
6. Matchmarking the zero point and further
tightening the nut will cause the sleeve to
bite into the tube.
At this time, check the shape of the sleeve
using the following illustration as a guide,
and adjust the numbers of turns for
tightening the nut.
Sleeve A: short with no slit - tighten 3/4 turn
Sleeve B: long with slit - tighten 1 + 1/4 turn
1
Bite Type Tube Fitting_007
Page 4-6
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7.
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Final tightening (Reset)
Fit the preliminary tightened tube onto the
fitting body. Tighten with a spanner to the
point where some resistance is suddenly felt,
then further tighten with the nut for a 1/4 turn.
2
w7s31b-012
1 Sleeve A
2 Sleeve B
Bite Type Tube Fitting_008
Loosen the nut and check that the sleeve
end is a few millimeters apart from the tube
end and that the sleeve will not move in the
axial direction (it is allowed to move in the
circumferential direction).
Bite Type Tube Fitting_009
Bite Type Tube Fitting_010
General Inspection and Repair
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w7s31b-008
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