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FERNO/MAN/1121/177-R04/UK
Page
9
2-Part Track-Mounted Floor Lock (255-mm Gauge Unwin System)
255
GAUGE
TRACKING
FOOT
END
HEAD
END
FRONT OF
VEHICLE
HEAD END
FLOOR LOCK
POSITION OF RH LOCKING
DEVICES ADJUSTABLE
PERMANENT
POSITIONAL
GUIDE PLATE
PERMANENT POSITIONAL
GUIDE PLATE
FOOT END
FLOOR LOCK
VEHICLE OFFSIDE WALL
TROLLEY
1 Removal of Head End and Foot End Lock Assemblies
On each Unwin locking device, rotate the plunger
crossbar and turret anticlockwise a quarter of a turn.
Lift the plunger crossbar from its U-slot in the turret and
rotate it slightly to rest it on top of the turret.
Remove the assembly from the tracking by sliding the
assembly along the track half a hole pitch (12-13 mm)
and lifting clear.
2 Installation of Head End Lock Assembly
On each Unwin locking device, rotate the plunger crossbar until it snaps into the U-
slot on the turret (diagram
A
below). Do not rotate the turret clockwise at this stage.
Close to the positional guide plate fitted to the vehicle floor between the tracking at
the head end, engage the pegs on the underside of the lock assembly in the
tracking (diagram
B
).
Slide the assembly towards its required position until both plungers locate in the
track.
For each of the two Unwin devices, use the plunger crossbar to rotate the turret
clockwise a quarter of a turn (diagram
C
). The assembly will be locked rigidly to the
tracking.
Test for security and safety.
TRACKING
DEVICE LOCKED
C
PEGS
A
B
3 Installation of Foot End Lock Assembly
Install foot end lock assembly in exactly the same way as above adjacent to the positional
guide plate at the foot end.
DEVICE UNLOCKED