McConnel PA7070T Operator's Manual page 57

TELE ARM WEAR PADS
Over a period of time during normal use the contact faces of the replaceable wear pads
will erode due to friction generated from the sliding surfaces of the tele arm – the wear rate
of these nylon compound pads may vary considerably and will be determined by the
frequency of use of the telescopic function. To accommodate for pad wear the side and
upper pusher plates located at the two wear pad stations on the socket arm will each offer
approximately 9mm of adjustment.
Wear of the pads should be checked on a regular basis by measuring the gap between the
pads and the tele arm using a feeler gauge at the open end of the socket arm - if the gap
is in excess of 1mm the pusher plates will need to be adjusted. NOTE: The telescopic arm
should be fully retracted before attempting to loosen or adjust the pusher plates.
Wear pads will need replacing when their respective pusher plate comes into contact with
the outer arm and no further adjustment is possible – always replace the pads in opposing
sets.
Refer to the following sections for details of wear pad installation and adjustment.
Wear Pad Installation
Replacement of the tele arm wear pads will necessitate the removal of the following
components in order to remove the tele dipper arm from the dipper arm socket:
 Removal of the flail head.
 Disconnection of the flail head hoses from the angling gear.
 Removal of the lower end fixings of the rigid flail pipes.
 Disconnection of the angling ram's hoses.
 Removal of the tele ram (piston rod end) from the tele dipper arm.
 Release of the pusher plates and withdrawal of the tele dipper arm from its socket.
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