IC Bus Gasoline CE Series, Operation And Maintenance Manual

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Maintenance Instructions
Periodically verify driveline axle air suspension height and
height control valve performance. Refer to the
Lubrication and
Maintenance Interval Chart at the end of this section.
Periodically:
• Check condition of spring leaves for evidence of fatigue,
bending or breakage.
• Check condition of suspension mounting brackets and
bushings.
• Check that torque rod mounting fasteners are tight.
NOTE: When retorque is required, make sure the part is in
like new condition. If it can’t be retorqued, then the part
needs to be replaced.
Suspension alignment must be maintained at all times.
Check the U-bolts as follows:
• After the bus has been operating under load for 1,000
miles (1,600 km), retorque the U-bolt nuts.
• Thereafter, retorque the U-bolt nuts every 36,000 miles
(58,000 km).
• Clean and lubricate the U-bolt, nut threads, and seats to
ensure a like new condition when retorquing.
Frame and Tow Hooks (If Equipped)
The Bus Chassis are manufactured with frame rails of High
Strength Low Alloy (HSLA) steel and must be handled in a
specific manner to ensure maximum service life.
Specific
instructions are published concerning proper repair of frame
rails. Before attempting frame repair or modification, consult the
service manager of your IC Bus dealer.
Inspect front and rear tow hooks for damage or loose mountings.
Steering
General
WARNING
To prevent personal injury and / or death, or
property damage, always follow recommended
procedures for steering system maintenance.
Failure to maintain the steering system in proper
condition can cause reduced steering ability.
NOTE: Steering problems must be corrected at once by a
qualified mechanic.
Inspect the steering system:
• Check tie rod ends, drag link ends, and kingpins. Joints
and fasteners must be tight. Articulating joints must be
well lubricated.
• Check for installation and spread of cotter pins and
tightness of nuts at both ends of tie rod and drag link.
• Check that pitman arm (steering arm at steering gear)
mounting is tight and locked. Check the power steering
system for leaks or hose chafing. Repair at once.
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