© 2020 Pierce Manufacturing Inc. All Rights Reserved. Chassis / 6-7
MAINTENANCE
Chassis
6-6. Aerial Device Boom Support
Inspect the boom support for structural integrity. Tighten any loose fasteners to the proper torque per the Frame
Fastener Torque Chart. Inspect welds for signs of fatigue cracking.
6-7. Automatic Lubrication Systems
6-7.1 Reservoir
Visually check the reservoir to ensure there is an adequate grease supply for the impending work day. If the lubricant
level in the reservoir gets too low, air will be induced into the system. This will not allow pressure to build up which
will cause a system fault.
6-7.2 Inspection
Inspect the vehicle for over or under lubrication before it is washed or pressure cleaned. Verify that all originally
attached lubrication lines are still connected. Pay particular attention to those points closest to the road surface.
6-7.3 Condition of Lube Points
Inspect all points being lubricated. A seal of lubricant around the outside of the bushings should be visible as this
assures that bearings are being flushed of contaminants. If the entire system appears to be over or under lubricated,
adjust the control unit accordingly. If an individual lubrication point appears to be over or under lubricated, replace
the metering cap for that line with a different size (too wet = smaller size; too dry = larger size).
6-8. Fasteners
6-8.1 Interior Fasteners
This vehicle may include items in the cab or other riding compartments that are mounted with threaded fasteners
(screws or nuts and bolts). Mounted items may include mounting plates or devices, cabinet doors, seats, hinges,
hooks, covers, or other items that need to be secure during operation. In some cases the natural vibration of the
vehicle may cause these fasteners to loosen over time. All fasteners should be inspected periodically to ensure that
they are secure and tight. Fasteners that do not hold securely should be reviewed by maintenance personnel for
repair or replacement.
Mounted items may come loose during operation. Inspect threaded fasteners periodically. Tighten or
replace loose fasteners immediately.
Loose items can create safety hazards during operation or become projectiles in a crash.
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