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August 2022
D-1
Perform Axle Maintenance -
ANSI/CSA/AS
Axle specifications require that this procedure be
performed every 12 months or 12,000 miles,
whichever comes first.
• Brake lining
• Brake cylinders
• Brake lines
• Trailer brake wiring
• Hub/Drum
• Wheel bearings
• Seals
• Springs
• Hangers
Required maintenance procedures and additional
axle information is available in the Dexter Axle
Operation Maintenance Service Manual
(Dexter part number LIT-001-00).
Dexter Axle Operation Maintenance Service Manual
Genie part number
Part No. 825934
Section 3 • Scheduled Maintenance Procedures
Checklist D Procedures
D-2
Check the Boom Wear Pads
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 within specification, refer
to Repair Procedure 3-2, How to Shim the Boom.
1 Extend the boom until the wear pads are
accessible.
2 Measure the thickness of the top, side and
bottom wear pads. If the wear pad is within
specification, shim as necessary to obtain zero
clearance and zero drag.
3 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.
84376
Note: Always maintain squareness between the
outer and inner boom tubes.
Boom wear pad specifications
Wear pad thickness, minimum
Genie TZ-34/20
7
/
inch
16
11 mm
3 - 23
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