Baroness LM551, Service Manual, Page: 46 / 213

Make sure that the thread portion, sheet
surface of the O-ring port, and O-ring are
not contaminated with foreign objects.
Apply oil or grease to the sheet surface
and O-ring before installation.
1
2
jf65lf-003
Adjustable Elbow_003
1 O-ring
2 Sheet surface
Important
Never give the locknut more than one turns. If
you give it more than one turn, the thread fit
between the other side port and locknut
becomes loose, which reduces the thread
strength.
If the washer goes too deeply into the other
side port, the washer gets deformed, which
leads to oil leakage.
Rough installation makes the elbow and nut
overloaded, which leads to deformation.
Be sure to observe the installation procedure.
To fit, screw the elbow by hand till the
washer face touches lightly, and turn from
that position in the loosening direction to
the setting position.
2.
3.
After fitting the opposite screw, tighten the
lock nut while holding the elbow with a
spanner etc. to ensure that the setting
position does not change.
Taper Pipe (PT) Thread Joint (Sealing Tape
Method)
Make sure that the taper thread portion is
not damaged or contaminated with foreign
objects.
1
14d3iz-001
Taper Pipe (PT) Thread Joint (Sealing Tape Method)_001
1 Taper (PT) thread portion
Important
If a used taper pipe (PT) thread joint retains
the residue of old sealing tape, using it again
for assembly may cause machine problems or
oil leakage.
Important
If you remove a taper thread joint, remove the
sealing tape residue from the joint and
connecting portion, so that the tape residue
will not enter the hydraulic system.
1
14d3iz-002
Taper Pipe (PT) Thread Joint (Sealing Tape Method)_002
1 Taper (PT) thread connecting portion
4.
1.
LM551
Hydraulic System
Page 4-8
General Inspection and Repair