User Manual

Every 7,500 mi / 12,000 km / 6 mo
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Frame - Frame Fasteners
•
Check for tightness. (Refer to Frame Fastener Torque Requirements on page 280 for maintenance instructions.)
Frame - Engine Mounting
• Refer to Engine Mounting on page 249 for maintenance instructions. Contact an authorized vehicle OEM dealership if engine
mounts need servicing.
Front Suspension - Spring Pins
• Check for proper function. (Refer to Front Axle and Suspension on page 252 for maintenance instructions.)
Drum Brakes (All) - Slack adjusters
• Check the push rod travel and check the control arm for cracks. Adjust at reline. (Refer to Operational Checks of Automatic
Slack Adjusters on page 213 for maintenance instructions.)
• Lubricate (NLGI #2 grease).
Drum Brakes (All) - Brake air system
• Check air lines and fittings for leaks. Adjust routing as required to prevent chafing. Check tank mounting and condition. (Refer to
Air System on page 204 for maintenance instructions.)
Drum Brakes (All) - Brake lining
• Inspect; replace as required. (Refer to Drum Brake Inspection on page 214 for maintenance instructions.)
Disc Brakes (Bendix
®
) - Brake pads
•
Inspect; replace as required. (Refer to Air Disc Brakes on page 212 for maintenance instructions.)
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Ensure that all maintenance intervals leading up to this point are repeated during this interval prior to the completion of
MAINTENANCE - Preventive Maintenance Intervals
those listed here.
Y53-6113-1A1 (11/20) 179
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