Series 50 – Section 13.7 Maintenance of Series 50G Engines

Section 13.7
Maintenance of Series 50G Engines

Series 50G transit coach components must be maintained at various intervals.‪

Section 13.7.1
6,000 Miles (10,000 km) Interval Maintenance for Transit Coach

Every 6,000 miles (10,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.2
12,000 Miles (19,000 km) Interval Maintenance for Transit Coach

Every 12,000 miles (19,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Dry type air cleaner, refer to "13.6.4 Dry Type Air Cleaner" .
• Coolant, refer to "13.6.7 Coolant" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.3
18,000 Miles (29,000 km) Interval Maintenance for Transit Coach

Every 18,000 miles (29,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Turbo recirculation valve, refer to "13.6.9 Turbocharger Compressor Recirculation Valve" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.4
24,000 Miles (39,000 km) Interval Maintenance for Transit Coach

Every 24,000 miles (39,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Dry type air cleaner, refer to "13.6.4 Dry Type Air Cleaner" .
• Coolant, refer to "13.6.7 Coolant" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .
• Spark plugs, boot spring assembly, refer to "13.6.11 Spark Plugs" .

Section 13.7.5
30,000 Miles (48,000 km) Interval Maintenance for Transit Coach

Every 30,000 miles (48,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.6
36,000 Miles (58,000 km) Interval Maintenance for Transit Coach

Every 36,000 miles (58,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Dry type air cleaner, refer to "13.6.4 Dry Type Air Cleaner" .
• Coolant, refer to "13.6.7 Coolant" .
• Turbo recirculation valve, refer to "13.6.9 Turbocharger Compressor Recirculation Valve" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.7
42,000 Miles (68,000 km) Interval Maintenance for Transit Coach

Every 42,000 miles (68,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.8
48,000 Miles (77,000 km) Interval Maintenance for Transit Coach

Every 48,000 miles (77,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Dry type air cleaner, refer to "13.6.4 Dry Type Air Cleaner" .
• Coolant, refer to "13.6.7 Coolant" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .
• Spark plugs, boot spring assembly, refer to "13.6.11 Spark Plugs" .

Section 13.7.9
54,000 Miles (87,000 km) Interval Maintenance for Transit Coach

Every 54,000 miles (87,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Turbo recirculation valve, refer to "13.6.9 Turbocharger Compressor Recirculation Valve" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.10
60,000 Miles (97,000 km) Interval Maintenance for Transit Coach

Every 60,000 miles (97,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Valve lash, refer to "13.6.2 Valve Lash" .
• Dry type air cleaner, refer to "13.6.4 Dry Type Air Cleaner" .
• Coolant, refer to "13.6.7 Coolant" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.11
66,000 Miles (106,000 km) Interval Maintenance for Transit Coach

Every 66,000 miles (106,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.12
72,000 Miles (116,000 km) Interval Maintenance for Transit Coach

Every 72,000 miles (116,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Valve lash, refer to "13.6.2 Valve Lash" .
• Dry type air cleaner, refer to "13.6.4 Dry Type Air Cleaner" .
• Coolant, refer to "13.6.7 Coolant" .
• Turbo recirculation valve, refer to "13.6.9 Turbocharger Compressor Recirculation Valve" .
• Spark plugs, boot-spring assembly, refer to "13.6.11 Spark Plugs" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.13
78,000 Miles (126,000 km) Interval Maintenance for Transit Coach

Every 78,000 miles (126,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.14
84,000 Miles (135,000 km) Interval Maintenance for Transit Coach

Every 84,000 miles (135,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Dry type air cleaner, refer to "13.6.4 Dry Type Air Cleaner" .
• Coolant, refer to "13.6.7 Coolant" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.15
90,000 Miles (145,000 km) Interval Maintenance for Transit Coach

Every 90,000 miles (145,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Turbocharger recirculation valve, refer to "13.6.9 Turbocharger Compressor Recirculation Valve" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.16
96,000 Miles (154,000 km) Interval Maintenance for Transit Coach

Every 96,000 miles (154,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Dry type air cleaner, refer to "13.6.4 Dry Type Air Cleaner" .
• Coolant, refer to "13.6.7 Coolant" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .
• Spark plugs, boot spring assembly, refer to "13.6.11 Spark Plugs" .

Section 13.7.17
102,000 Miles (164,000 km) Interval Maintenance for Transit Coach

Every 102,000 miles (164,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.18
108,000 Miles (174,000 km) Interval Maintenance for Transit Coach

Every 108,000 miles (174,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Valve lash, refer to "13.6.2 Valve Lash" .
• Crankcase breather element, refer to "13.6.3 Closed Crankcase Breather System" .
• Dry type air cleaner, refer to "13.6.4 Dry Type Air Cleaner" .
• Coolant, refer to "13.6.7 Coolant" .
• Turbo recirculation valve, refer to "13.6.9 Turbocharger Compressor Recirculation Valve" .
• Thermostat, refer to "13.6.10 Thermostat" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.19
114,000 Miles (183,000 km) Interval Maintenance for Transit Coach

Every 114,000 miles (183,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .

Section 13.7.20
120,000 Miles (193,000 km) Interval Maintenance for Transit Coach

Every 120,000 miles (193,000 km), the following components must be maintained:‪

• Fuel filter, element and seal, refer to "13.6.1 Coalescing Fuel Filters" .
• Coalescing filters, refer to "13.6.1 Coalescing Fuel Filters" .
• Engine lubricating oil, refer to "13.6.5 Engine Lubricating Oil" .
• Engine lubricating oil filter, refer to "13.6.6 Engine Lubricating Oil Filters" .
• Turbocharger and wastegate assembly hoses, refer to "13.6.8 Turbocharger and Wastegate Assembly" .
• Dry type air cleaner, refer to "13.6.4 Dry Type Air Cleaner" .
• Coolant, refer to "13.6.7 Coolant" .
• Crankcase breather filter replaced, refer to "13.6.3 Closed Crankcase Breather System" .
• Spark plugs, boot spring assembly, refer to "13.6.11 Spark Plugs" .