Cummins issued document AAAP06207-0 as the factory parts catalog for the B5.9-C engine, and this 158-page Cummins B5.9-C parts manual PDF is that book. Exploded views fill most of it, tracing the engine from cylinder block, crankshaft and main bearing set through rod and piston kits, cylinder head, rocker levers, Bosch VE injection pump, injectors, turbocharger, oil cooler and flywheel, with each callout tied to a part number. Where the build splits, separate pages break out the 60Z and the 65Z/65TM versions of the block cover, accessory drive pulley, front gear train drive and tach drive. Check the ring set, piston pin and bearing shell callouts against what came out of your block, then use the Parts No. Index to run any number back to its assembly. Nobody answers the phone at a rebuild stand. Print the pages you need, let them take the oil at the bench, and keep the bookmarked, text-searchable file for the next order.
What's Inside This Cummins B5.9-C Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block & Crankshaft | Cylinder Block, Crankshaft & Main Bearing, Vibration Damper, Connecting Rod & Piston, Camshaft, Cylinder Block Cover, Flywheel Housing, Flywheel, Dataplate, Lifting Bracket | |
| Cylinder Head & Valve Train | Cylinder Head, Rocker Levers, Valve Cover, Valve Tappet, Cam Follower Cover | |
| Fuel System | Bosch Fuel Shutoff Valve, Fuel System Accessories, Bosch VE Service Parts with Boost, Air Fuel Control Plumbing, Fuel Injector, Fuel Plumbing, Fuel Filter, Fuel Filter Plumbing, Fuel Drain Location, Fuel Pump Coupling | |
| Lubrication System | Oil Pan, Oil Level Gauge, Lubricating Oil Cooler, Lubricating Oil Pump | |
| Cooling System | Water Pump, Fan Drive, Thermostat Housing, Thermostat, Water Inlet Connection | |
| Front Gear Train & Accessory Drives | Front Gear Train Accessory Drive, Accessory Drive Pulley, Mechanical Tach Drive | |
| Air Intake, Turbocharger & Exhaust | Turbocharger, Turbocharger Location, Exhaust Plumbing, Air Intake Heater | |
| Air Compressor (65Z, 65TM) | Air Compressor, Air Compressor Inlet, Compressor Coolant Plumbing | |
| Electrical System | Alternator, Alternator Location, Starting Motor, Starting Motor Mounting |
Cummins B5.9-C Common Problems This Manual Covers
Cummins B5.9-C crankshaft main bearing set identification with standard and oversize part numbers unclear
Check the crankshaft and main bearing exploded view on page 30, then match its symbols to the parts list. Identify standard bearing set YE3802070 separately from metal shell kit YE3802072, listed as 0.50 mm oversize. Verify the corresponding shell and thrust bearing entries before selecting parts.
Manual Section: Crankshaft & Main Bearing p. 30Piston kit and piston ring set identification with standard and oversize part numbers unclear
Check the connecting rod and piston exploded view on page 34 against the parts list. Match standard piston kit YE3802747 with standard piston ring set YE3802746. For the listed 0.50 mm oversize option, identify piston kit YE3802764 and ring set YE3802422 before selecting the corresponding parts.
Manual Section: Connecting Rod & Piston p. 34Cylinder head intake and exhaust valve identification with separate valve part numbers unclear
Check the cylinder head exploded view on page 48, then identify the valve entries in the parts list. Match intake valve YE3920867 to symbol 9A and exhaust valve YE3920868 to symbol 10A. Verify each valve's part number separately from the listed seals, guides, springs, and retainers.
Manual Section: Cylinder Head p. 48Fuel injector assembly identification with separate seal and sealing washer part numbers unclear
Check the fuel injector exploded view on page 66 against the parts list. Identify injector assembly YE3802677 separately from sealing washer YE3906659 and seals YE3903380 and YE3909356. Match each part to its listed symbol so the assembly, washer, and separate seals stay distinct during parts selection.
Manual Section: Fuel Injector p. 66Oil level gauge tube identification between 60Z and 65Z, 65TM parts listings unclear
Check the oil level gauge exploded views on pages 80 and 82, then compare their parts lists. Identify tube YE3905127 under 60Z and tube YE3905128 under 65Z, 65TM. Verify gauge YE3907714 separately; both lists show that gauge number despite the different tube numbers.
Manual Section: Oil Level Gauge < 60Z > p. 80Water pump assembly and separate seal identification with multiple water pump part numbers unclear
Check the water pump exploded view on page 88 and match its symbols to the parts list. Identify water pump assembly YE3928395 at symbol 1A and seal YE3906698 at symbol 2A. Keep the separate water pump listing YE3802358 at symbol 100A distinct when selecting part numbers.
Manual Section: Water Pump p. 88Frequently Asked Questions
What is the part number for the BUSHING in this manual?
Page 29 lists part number YE3901306 for the BUSHING. p. 29
What is the part number for the CRANKSHAFT in this manual?
Page 31 lists part number YE3929037 for the CRANKSHAFT. p. 31
What is the part number for the DAMPER in this manual?
Page 33 lists part number YE3914454 for the DAMPER. p. 33
What is the part number for the PIN,PISTON in this manual?
Page 35 lists part number YE3901793 for the PIN,PISTON. p. 35
What is the part number for the SCREW in this manual?
Page 37 lists part number YE3908612 for the SCREW. p. 37
Is this Cummins B5.9-C manual a PDF I download?
You download the Parts Manual yourself: 158 pages, searchable PDF, available immediately. Keep a copy on every device you use.
Is printing allowed for this Cummins B5.9-C Parts Manual?
Yes. Print the pages you need for the job in your own shop, and bin them when they get greasy.
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