Checklist D Procedures; Check The Boom Wear Pads - Genie S-80 Service Manual

Section 3 • Scheduled Maintenance Procedures

Checklist D Procedures

D-1

Check the Boom Wear Pads

Genie specifications require that this procedure be
performed every 1000 hours or annually,
whichever comes first.
Maintaining the boom wear pads in good condition
is essential to safe machine operation. Wear pads
are placed on boom tube surfaces to provide a low
friction, replaceable wear pad between moving
parts. Improperly shimmed wear pads or continued
use of extremely worn wear pads may result in
component damage and unsafe operating
conditions.
Note: If the wear pads are still within specification,
refer to Repair Procedure 4-2, How to Shim the
Boom.
1 Start the engine from the ground controls.
2 Raise the end of the boom to a comfortable
working height (chest high), then extend the
boom 1 foot / 30 cm.
3 Measure each wear pad. Replace the wear pad
if it is less than specification. If the wear pad is
still within specification, shim as necessary to
obtain zero clearance and zero drag.
3 - 48
4 Extend and retract the boom through the entire
range of motion to check for tight spots that
may cause binding or scraping of the boom.
Note: Always maintain squareness between the
outer and inner boom tubes.
Boom wear pad specifications
Boom number one
Bottom wear pads
(extension end of boom)
Top and side wear pads
(extension end of boom)
Boom number two
Top, bottom and side wear pads
(extension end of boom)
Bottom wear pads
(pivot end of boom)
Top and side wear pads
(pivot end of boom)
Boom number three
Top, bottom and side wear pads
(pivot end of boom)
a
a boom 1
b boom 2
c boom 3
S-80 • S-85 • S-80X
February 2012
Minimum
1
/ inch
2
12.7 mm
5
/ inch
8
15.9 mm
1
/ inch
2
12.7 mm
1
/ inch
2
12.7 mm
5
/ inch
8
15.9 mm
1
/ inch
2
12.7 mm
c
b
Part No. 122985