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13 MAINTENANCE CHECKLISTS
CYCLICAL MAINTENANCE CHECKLIST
ITEM MAINTENANCE AREA OF BUS
Evaporator Fins Clean coil and straighten bent fins Every 600
operating hours
Major
Options
Refrigerant Valves Inspect valve cap seals for damage
and valve caps for proper
tightness
Every 600
operating hours
Major
Options
Evaporator Blower
Motors
Check fan wheel alignment and
mounting bolts for tightness -
Inspect brushes for wear
Every 600
operating hours
Major
Options
Refrigerant System Check hoses and tubing for leaks Every 600
operating hours
Major
Options
Air Conditioning
Compressor
Check compressor and platform
mounting bolts for tightness
Every 600
operating hours
Major
Options
Air Conditioning
Compressor
Clutch Assembly
Check wiring harness Every 600
operating hours
Major
Options
Refrigerant
Pressure
Check with manifold gauge Every 1,000
operating hours
Major
Options
Dual Wheel Lug
Nuts
Check torque - Tighten as needed At 100 miles,
500 miles, &
every 6,000 miles
thereafter
Chassis,
Suspension,
Wheels & Tires
Wheel Lug Nuts Check torque - Tighten as needed At 500 miles &
every 6,000 miles
thereafter
Chassis,
Suspension,
Wheels & Tires
Air-Ride
Suspension
Assembly
Check torque on nuts, bolts, and
fittings - Tighten or replace
At 1,000 miles,
3,000 miles, & ev-
ery 12,000 miles
thereafter
Chassis,
Suspension,
Wheels & Tires
Brake Retarder Check - Do mechanical
maintenance
See Brake Retard-
er Manual
Chassis,
Suspension,
Wheels & Tires
Brake Retarder Wash with pressurized water, Do
not use detergent
Every 3,000 to
6,000 miles
Chassis,
Suspension,
Wheels & Tires
Brake Retarder Lubricate, see Brake Retarder
Manual
At 3,000 miles &
every 6,000 miles
thereafter
Chassis,
Suspension,
Wheels & Tires
Driver’s Seat Check seat mounting bolt
tightness
Every 6,000 miles Seating
Battery, Low Main-
tenance Type
Check - Add electrolytes as
needed
Every 6,000 miles Electrical &
Lighting
Passenger Seats Check seat mounting bolts for
tightness - Check brackets
Every 12,000
miles
Seating
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