Heavy Haul Trailers
26
3.2
Operating Procedures
3.2.1
Break-In and Inspection
Time and distance specify the normal break-in procedure:
1.
Check the hub oil levels daily for the first 3 weeks of operation.
2.
Check the tires for proper inflation pressures. Re-torque wheel nuts after 100 km.
3.2.2
500 mile / 800 km Inspection
After the first 500 miles/800km of service, some “settling in” will have occurred, particularly in the
suspension components.
1.
Re-torque all bolts and fasteners, paying particular attention to the axle U-bolts, hub studs, upper
and lower fifth wheel bolts and the suspension system. Refer to Section 4.4 for specific bolts and
Section 6 for general bolts.
2.
Check the tires for proper inflation pressures and rim alignment. Re-torque wheel nuts. Block the
axle and spin the wheels. Check for brake drag and wheel bearing adjustment.
3.
Check the oil levels in hubs. Maintain proper oil level. If any levels are low, check for leaks and
repair.
4.
Check the axle alignment. Look for irregular tire wear. Refer to maintenance section for procedure.
3.2.3
10,000 mile / 16,000 km Inspection
1.
Check the function and adjustment of the brakes on each axle. The pads should not drag on the
drum/rotor when the brakes are released.
2.
Check the tire inflation pressures and tread wear. Always match tires with tread wear that is worn
to 1/8” in difference. If unusual or excessive tire wear occurs, it indicates something is wrong.
Check further to determine the cause and correct it. See the maintenance section for further
information.
3.
Re-torque all bolts and bolted connections.
4.
Visually check all welds and adjacent areas for cracks. Any cracks should be repaired as soon as
possible by the dealer.
5.
Ensure all suspension hangers and related members are tight and secure.
6.
Check the axle alignment. Look for irregular tire wear. Refer to maintenance section for procedure.
3.2.4
20,000 mile / 32,000 km Inspection
1.
Check the brake pads and drums/rotors for wear. Replace or adjust as required.
2.
Check the axle alignment. Refer to maintenance section for procedure. The operator can then go
to the service schedule, as defined in the service intervals section.
Summary of Contents for H550 Series
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Page 52: ...43 Heavy Haul Trailers 3 5 4 Extension Load Shim Instructions ...
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