Checklist D Procedures; Check The Boom Wear Pads - Genie S-105 Service Manual

June 2011
REV A
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 worn out wear pads may result in component
damage and unsafe operating conditions.
1 Start the engine from the ground controls.
2 Raise the end of the boom to a comfortable
working height (chest high). Stop the engine.
3 Remove the protective covers from the platform
end of each boom tube.
4 Measure each wear pad.
Boom wear pad specifications
Minimum thickness
5 Replace any wear pad if it is less than
specification. If a wear pad is not less than
specification, shim as necessary to obtain
minimum clearance with zero binding.
Note: The minimum shim clearance for the boom
wear pads is .030 in / .76 mm and the maximum
allowable shim clearance is .090 in / 2.29 mm.
Note: If the wear pads are still within specification,
refer to Repair Section 4-2, How to Shim the Boom.
Part No. 102916
Section 3 • Scheduled Maintenance Procedures

Checklist D Procedures

6 Remove the boom end cover retaining fasteners
at the pivot end of the boom. Remove the boom
end cover from the machine.
7 Remove the boom side inspection cover
retaining fasteners from the boom at the pivot
end of the boom. Remove the boom inspection
cover from the machine to access boom 3 wear
pads.
8 Measure each wear pad at the pivot end of the
boom.
Boom wear pad specifications
Minimum thickness
9 Replace any wear pad if it is less than
specification. If a wear pad is not less than
specification, shim as necessary to obtain
minimum clearance with zero binding.
10 Extend and retract the boom through the entire
range of motion to check for tight spots that
may cause binding of the boom tubes.
1
/ inch
2
Note: Always maintain squareness between the
12.7 mm
outer and inner boom tubes.
S-100 • S-105 • S-120 • S-125
1
/ inch
2
12.7 mm
3 - 49