Severe Duty/Vocational - 450,000 mi / 725,000 km / 13,500 hrs / 48 mo (4 yrs)
27
Drive Belts
• Refer to Poly V-belt and Fan Drive Belt Removal on page 89 - Replace for maintenance instructions.
Severe Duty/Vocational - 750,000
mi / 1,200,000 km / 24,000 hrs / 96 (8
yrs)
Severe Duty/Vocational - 750,000 mi / 1,200,000 km / 24,000 hrs / 96 (8 yrs)
28
Cooling System
• Refer to Change Extended Life Coolant on page 63 for maintenance instructions.
Pick-up/Delivery/Refuse
Pick-up/Delivery/Refuse - 15,000
mi / 24,000 km / 400 hrs / 6 mo
27
Ensure that all maintenance intervals leading up to this point are repeated during this interval prior to the completion of
those listed here.
28
Ensure that all maintenance intervals leading up to this point are repeated during this interval prior to the completion of
those listed here.
ENGINE MAINTENANCE - Pick-up/Delivery/Refuse
Y53-1166-1M1 (10/2020) 49
2
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