SECTION 3 -- FIELD OPERATION
3--105
Swivelling Tow Pin -- Manual Engagement
To attach a trailer drawbar to the tow pin, remove the
‘R’ clip (1) Figure 177, from the tow pin and lift out
using the handle (2). Re-insert the tow pin so that it
passes through the eye of the trailer drawbar.
Replace the ‘R’ clip.
The tow pin may be allowed to swivel after loosening
the socket-headed screw (1) Figure 178 on the side
of the tow pin assembly. This feature will permit a
trailer with a non-swivelling drawbar to articulate
relative to the towing tractor.
NOTE: The static downward load on the tow pin must
not exceed 2000 kg (4400 lb.) or the rear tyre load
capacity, whichever is lower. (See T yre Pressures
and Permissible Loads at the end of Section 3).
178
Swivelling Tow Pin -- Auto Engagement
Th e tow pin (2) Figure 179, is spri ng- loaded in the
engaged (down) position, as shown. To attach a trailer
to the tow pin, lift the release lever (1) to the vertical
position to retract the tow pin up into it’s housing.
The release lever is connected by the cable (4) to a
handle in the cab. This will permit trailer attachment
without leaving the cab. To actuate the cable release
and retract the to w pin, slide the collar (1) upwards to
release the lock and then pull up the handle.
179
The pin will stay in the raised position until the trailer
drawbar is located beneath it. The eye of the drawbar
will contact the trip lever (3) Figure 179 and cause
the pin to drop down into the engaged position.
Alternatively, the tow pin will drop down into the
engaged position if the lever (1) is pulled down.
WARNING
Do not attempt to trip the lever by hand as the fingers
may be trapped by the action of the spring-loaded
tow pin.
1
180
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