Part of the Kubota Parts Manuals.
Every part number in this Kubota B5100D, B5100E Parts Catalog (OEM #66496-6292-5) is here to get you ordering before you walk to the counter. The 46 pages run from exploded views covering engine components through drivetrain, chassis, hydraulic, and electrical assemblies, each diagram labeled and matched to a parts list table. Hydraulic parts diagrams cover the oil pressure, control valve, and steering component groups, so you can pin down the exact component you're pulling. Numbered reference tables sit beside every diagram: crankcase, cylinder head, camshaft, piston and crankshaft, injection pump, transmission shafts, differential, brakes, front axle, 3-point linkage, and more. Your B5100 runs 2 pistons, 2 inlet valves, 2 exhaust valves, and 8 cylinder head bolts, each tied to a part number. No more digging through dealer microfiche for numbers that may be discontinued. Bookmarked throughout; search a part name and land on its diagram.
What's Inside This Kubota B5100D, B5100E Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Nozzle Holder Group, Speed Control Plate Group, Injection Pump Group Disassembly, Accelerator Pedal Group, Fuel Tank Group | |
| Cooling System | Radiator Group | |
| Engine | Crankcase Group, Cylinder Head Group, Gear Case Group, Breather Group, Valve, Rocker Arm Group, Camshaft Group, Piston, Crankshaft Group | |
| Electrical System | Dynamo Group, Battery Group | |
| Clutch & Transmission | Clutch Rod Group, Clutch Housing Group | |
| PTO | 3rd, 5th, PTO Shaft Group | |
| Rear Axle, Differential & Brakes | Brake Group, Brake Rod Group | |
| Front Axle & Steering | Steering Group, Front Axle Group, Front Wheel Group | |
| Hydraulics & 3-Point Hitch | Control Valve Group, Point Linkage Group | |
| Body & Operator Station | Case Cover Group, Bonnet Group | |
| Decals & Accessories | Name Plate Group | |
| Other Components | Axle Case Group, 1st Shaft, 4th Shaft Group, 2nd Shaft, Reverse Shaft Group, Main Speed Change Group, Auxiliary Speed Change Group, Oil Pressure Group 1, Panel Group, Gear Group |
Every system also includes a parts diagram and a parts list table.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Cylinder Head Bolt Quantity | 8 units | p. 4 |
| Inlet Valve Quantity | 2 units | p. 7 |
| Exhaust Valve Quantity | 2 units | p. 7 |
| Valve Spring Quantity | 4 units | p. 7 |
| Piston Quantity | 2 units | p. 9 |
| Connecting Rod Bolt Quantity | 4 units | p. 9 |
| Crankpin Metal Quantity | 4 units | p. 9 |
| Clutch Pressure Spring Quantity | 6 units | p. 12 |
| Axle Case Spur Gear Teeth | 52 teeth | p. 16 |
| 1st Shaft Gear Teeth | 29 teeth | p. 18 |
| 2nd Shaft Gear Teeth | 34 teeth | p. 19 |
| Differential Spiral Bevel Gear Teeth | 37 teeth | p. 21 |
Kubota B5100D, B5100E Common Problems This Manual Covers
Engine loses power, compression reads low, and the breather pushes excessive blowby
Check the exploded view on page 4 to pull the right head gasket and hardware numbers, then order 8 cylinder head bolts as the parts list specifies. Cross-reference the casting numbers so the replacements match.
Manual Section: Cylinder Head Group p. 4Rear wheel drive locks up and makes a loud grinding noise from the axle housing
Review the chassis diagram on page 16 to locate the axle case spur gear, and confirm the replacement carries 52 teeth. Match the index part number to order the right bearings and seals for reassembly.
Manual Section: Axle Case Group p. 16Tractor hesitates under heavy load and emits a burning smell from the bell housing area
Inspect the clutch diagram on page 12 for the friction disc and throwout bearing numbers, then buy 6 clutch pressure springs to finish the assembly. Confirm the part numbers against your chassis serial number.
Manual Section: Clutch System Component Repair p. 12Engine runs rough with loud tapping noises coming directly from the top cover
Trace the exploded view on page 7 to the correct rocker arm and pushrod numbers, then order 4 valve springs to wrap up the cylinder head service. Check the index for the matching valve cover gasket.
Manual Section: Valve, Rocker Arm Group p. 7Frequently Asked Questions
What do I get after purchasing this Kubota B5100D, B5100E manual?
A 46-page Parts Catalog as a searchable PDF, ready the moment checkout completes. Read it on a computer, tablet, or phone, with no shipping wait.
Am I able to print pages from this manual?
Yes, print as many copies as you like; there are no restrictions. Plenty of mechanics print just the section they need and carry it to the shop floor.
Are hydraulic system diagrams in this Kubota B5100D, B5100E Parts Catalog?
Yes. It includes exploded diagrams of hydraulic components and assemblies, each with part numbers.
Does this catalog cover transmission and drivetrain components?
Yes. The catalog includes exploded views and numbered parts lists for the 1st through 5th shaft groups, the PTO shaft, main and auxiliary speed change groups, differential, axle case, and rear wheel groups — all with reference tables to match part numbers before you order.
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