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17. Routine Maintenance
and Daily Inspection
17.1
Daily Inspection
1.
Daily or before each trip, check the suspension to be
sure it is fully operational and visually free of any
obvious signs of failure in any major component.
2.
Visually inspect air springs for sufficient and equal
pressure and that the suspension is set at the proper ride
height. Refer to ride height measurement and re-setting
instructions as described in Section 6. Service as necessary.
17.2
Initial 5,000 Miles (8,000 km) or
100 Hours of Service
1.
The suspension ride height (underside of frame
to centerline of axle) MUST BE WITHIN ± .25" OF
RECOMMENDED DESIGN HEIGHT. Refer to the ride height
measurement and re-setting instructions as described in
Section 6. Service as necessary.
An improperly set ride height could result
in suspension component damage and/or
poor vehicle ride performance.
2.
After initial 5,000 miles (8,000 km) or 100 hours of
service, inspect bolts and nuts at the pivot connections,
frame crossmember connections, V-Rod connections and
axle connections to ensure they are properly torqued.
Check all other nuts and bolts for proper torque. Re-torque
as necessary according to the specifications listed in
Section 16.
IMPORTANT: It is recommended to monitor torque of
any joint that required re-torque at the
5,000 mile/100 hours of service interval.
Continue to monitor these joints daily until
no change occurs at any joint that required
re-torquing. Establish a re-check interval
equivalent to findings of this monitoring.
Failure to maintain proper joint torque
could lead to joint failure which, if not
avoided, could result in death or
serious injury.
3.
With the vehicle on level surface and air pressure
in excess of 70 psig, verify that all air springs are of
sufficient and equal firmness.
4.
Visually check all air control system fittings for air leaks
by applying a soapy water solution and checking for
bubbles at all air connections and fittings.
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Maintenance and Service Schedule
17.3
Routine Maintenance - 50,000 Miles
(80,000 km) / 1,000 Hours of Service,
or as Needed
Inspect suspension components per 5,000 mile (8,000 km)
inspection. Check all other suspension components for any
sign of damage, looseness, torque loss, wear or cracks. To
prevent equipment breakdown; repair, tighten or replace
damaged or loosened components.
17.4
Visual Inspection Procedure
IMPORTANT: A schedule for physical and visual inspections
should be established by the operator based
on severity of operation or damage to the
vehicle could occur.
IMPORTANT: During each pre-trip and safety inspection
of the vehicle, a visual inspection of the
suspension should be done or damage to
the vehicle could occur.
Failure to correct out of specification
conditions during routine inspections
could result in poor suspension performance
which, if not avoided, could result in
damage to trailer components.
Visually check for:
Bolt Movement – loose dirt, rust or metal wear around bolt
head and nut.
Air Springs – clearances, wear damage, and proper inflation.
Shock Absorbers – leaking or damaged.
Cracked Parts or Welds.
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