John Deere TO4039D, 4039TL, CD4039DF, CD4039TF, 4045DF, 4045TF Service Parts Manual (TP-5434)

These John Deere 4-cylinder industrial engines usually live in loaders, pumps, generators, and farm machines that run hard in dusty, muddy, or cold conditions. This service parts manual is what I’d keep open on the bench while tearing down a fuel system or front gear train so I can match what’s in my hands to the exact parts breakdown. If a 4045 starts smoking and I’m pulling injectors, this book lets me confirm which style nozzle, seals, and small hardware belong on that specific engine variant before I order anything.

Applications & Use Cases

• Confirm engine variant (TO4039D, 4039TL, CD4039DF, CD4039TF, 4045DF, 4045TF) so you don’t mix parts between similar-looking models.
• Trace how subcomponents fit together to identify a single gasket or O-ring instead of guessing from a catalog picture.
• Verify updated or superseded part choices when replacing pumps, manifolds, or brackets.
• Cross-check left/right or front/rear components during teardown so everything goes back in the correct orientation.
• Print just the pages you need and bring them to the machine to label parts trays and bagged hardware accurately.

FAQ

Q: Can I use this on a tablet or laptop in the shop?

A: Yes, it’s practical to keep it open digitally so you can zoom diagrams and search part descriptions while you work.

Q: Is this good enough to order parts without bringing the old one to the dealer?

A: In most cases yes, as long as you match the engine model and visually confirm the breakdown against what’s on your engine.

Safety Note

Always lock out the machine and let the engine cool before inspecting or removing any components.

John Deere TO4039D, 4039TL, CD4039DF, CD4039TF, 4045DF, 4045TF Index:

SUBJECT PAGE
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Number Significance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
How to Find Part Numbers . . . . . . . . . . . . . . . . . . . . . . . 1
Specification Number Index . . . . . . . . . . . . . . . . . . . . . . 2
Group 1: Air Intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Group 2a: Water Pump . . . . . . . . . . . . . . . . . . . . . . . . . 8
Group 2b: Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Group 2c: Fan Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Group 2d: Fan Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Group 3: Vent Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Group 4a: Camshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Group 4b: Valve Train . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Group 4c: Rocker Arm Cover . . . . . . . . . . . . . . . . . . . . 19
Group 5a: Fuel Injection Pump . . . . . . . . . . . . . . . . . . . 20
Group 5b: Fuel Injection Nozzle . . . . . . . . . . . . . . . . . . 24
Group 7: Cylinder Block . . . . . . . . . . . . . . . . . . . . . . . . . 26
Group 8a: Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Group 8b: Crankshaft Pulley . . . . . . . . . . . . . . . . . . . . . 31
Group 9: Cylinder Head . . . . . . . . . . . . . . . . . . . . . . . . . 32
Group 10a: Oil Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Group 10b: Dipstick . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Group 11a: Starter Motor . . . . . . . . . . . . . . . . . . . . . . . . 36
Group 11b: Starter Motor Components . . . . . . . . . . . . 38
SUBJECT PAGE
Group 12a: Exhaust Manifold . . . . . . . . . . . . . . . . . . . . 40
Group 12b: Exhaust Elbow . . . . . . . . . . . . . . . . . . . . . . 41
Group 13a: Flywheel . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Group 13b: Flywheel Housing . . . . . . . . . . . . . . . . . . . . 43
Group 14: Fuel Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Group 15: Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Group 16: Balancer Shafts . . . . . . . . . . . . . . . . . . . . . . 50
Group 18: Timing Gear Cover . . . . . . . . . . . . . . . . . . . . 51
Group 21a: Oil Pan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Group 21b: Oil Fill Tube . . . . . . . . . . . . . . . . . . . . . . . . . 58
Group 21c: Oil Cooler . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Group 22: Piston and Connecting Rod . . . . . . . . . . . . 61
Group 25: Oil Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Group 26: Front Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Group 39a: Cylinder Head Gasket Set . . . . . . . . . . . . 66
Group 39b: Overhaul Gasket Kit . . . . . . . . . . . . . . . . . . 67
Group 42: Short Block . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Group 50a: Turbocharger and Oil Lines . . . . . . . . . . . 70
Group 51a: Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Group 51b: Alternator Brackets . . . . . . . . . . . . . . . . . . 74
Group 51c: Alternator Components . . . . . . . . . . . . . . . 77

John Deere