Part of the Kubota Repair Manuals.
This is the Kubota Workshop Manual for the V3800 common-rail diesel engine, a 201-page PDF covering the V3800-CR-TE4, V3800-CR-TIE4, V3800-CR-TE4C, V3800-CR-TIE4C, V3800-TIE4, and V3800-TIE4C variants. These are Tier 4 OEM engines, and the manual documents both the common-rail and after-treatment hardware.It moves from engine identification and safety through specifications, performance curves, dimensions, and wiring diagrams, then details the engine mechanism: the cylinder block and head, piston, lubricating and cooling systems, the common rail system, the engine control ECU and sensors, and the diesel particulate filter after-treatment.The servicing section carries troubleshooting, full servicing specifications, tightening torques, and step-by-step disassembly and assembly. Maintenance intervals from the daily checks out to the 3000-hour service are laid out, making this a complete reference for rebuilding or maintaining the V3800.
What's Inside This Kubota V3800 Series Manual
| System | Pages | Key Topics |
|---|---|---|
| Record of Revisions | 3 | Engine Identification, Muffler Full Assembly Identification, Change of Radiator Coolant, Compression Tester Adaptor, Diesel Particulate Filter (DPF), SCV |
| Information | 4-26 | - |
| General | 27-69 | Engine Identification (Model Name and Engine Serial Number, Cylinder Number, Muffler Full Assembly Identification), Maintenance Check List (Daily Check Points) |
| Engine Mechanism | 70-107 | Engine (Cylinder Block, Cylinder Head, Piston), Lubricating System (Oil Cooler), Cooling System (Thermostat, Bottom Bypass System) |
| Troubleshooting | 109-112 | - |
| Servicing Specifications | 113-119 | - |
| Tightening Torques | 120-122 | Tightening Torques of Screws, Bolts and Nuts for General Use, Bolts and Nuts for Special Use |
| Checking, Disassembling and Servicing | 123-200 | Engine Body and Servicing |
| Editor | 201 | Engine Service Department, Address, Phone, Fax, E-Mail, Kubota Corporation, Printed in Japan, Code Number |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| General Torque (No Mark) M6 | 7.9 to 9.3 N·m (0.80 to 0.95 kgf·m, 5.8 to 6.8 lbf·ft) | p. 120 |
| General Torque (No Mark) M8 | 18 to 20 N·m (1.8 to 2.1 kgf·m, 13 to 15 lbf·ft) | p. 120 |
| Lubricating Oil Capacity | 13.2 L (3.49 U.S.gals) | p. 10 |
| Fuel Type | Ultra Low Sulfur Diesel Fuel only < 0.0015 % (15 ppm) | p. 36 |
| Coolant Change Interval (L.L.C.) | Every 2 years | p. 34 |
| Total Displacement | 3.769 cm³ | p. 10 |
| Weight (Dry) | 324 kg | p. 10 |
| Cylinder Head Surface Flatness (Allowable Limit) | 0.05 mm | p. 113 |
| Valve Clearance (Cold, Factory Spec) | 0.23 to 0.27 mm | p. 114 |
| V3800-CR-TE4, V3800-CR-TIE4, V3800-CR-TE4C, V3800-TIE4, V3800-TIE4C | ||
| Engine Oil Change Interval | Every 500 Hrs or 1 year whichever comes first | p. 35 |
| V3800-CR-TE4, V3800-CR-TE4C, V3800-CR-TIE4, V3800-CR-TIE4C | ||
| Compression Pressure (Factory Spec) | 3.09 to 3.28 MPa / 200 min⁻¹ (rpm) | p. 113 |
| V3800-TIE4, V3800-TIE4C | ||
| Compression Pressure (Factory Spec) | 2.95 to 3.13 MPa / 200 min⁻¹ (rpm) | p. 113 |
Kubota V3800 Series Common Problems This Manual Covers
Hard starting or low power
A common-rail diesel that starts hard or lacks power sends you to compression, injection, and fault-code checks. The servicing section opens with troubleshooting and the servicing specifications, including compression and valve-clearance limits.
Manual Section: Servicing p. 108Common rail injector faults
Worn or leaking injectors and supply-pump problems cause misfire, smoke, and rough idle on the V3800. The engine mechanism section explains the common rail system, supply pump, rail, and injector operation.
Manual Section: Engine Mechanism p. 70DPF clogging and regeneration
The diesel particulate filter loads up over time and needs periodic cleaning to keep back-pressure in range. The general section maintenance list gives the DPF cleaning interval and differential pressure checks.
Manual Section: General p. 27Overheating or coolant loss
Overheating on these engines often traces to the thermostat, bottom bypass system, or coolant condition. The engine mechanism section covers the cooling system, including thermostat operation.
Manual Section: Engine Mechanism p. 70Fuel contamination or filter faults
Dirty fuel and neglected filters starve the high-pressure system and damage injectors. The general section maintenance list sets the fuel filter cartridge replacement interval at every 250 hours.
Manual Section: General p. 27ECU sensor or wiring faults
Sensor and harness problems throw fault codes and put the engine into a limited mode. The wiring diagrams in the information section show the engine, injector, and ECU intermediate harnesses for tracing.
Manual Section: Information p. 4Frequently Asked Questions
Which engines does this manual cover?
It covers the Kubota V3800 diesel in the V3800-CR-TE4, V3800-CR-TIE4, V3800-CR-TE4C, V3800-CR-TIE4C, V3800-TIE4, and V3800-TIE4C variants, all Tier 4 common-rail OEM engines.
What is the engine oil capacity?
The specifications list a lubricating oil capacity of 13.2 liters, along with the 3.769 cm total displacement and a dry weight of 324 kg. p. 10
Does it give tightening torque values?
Yes. The tightening torques cover general screws and bolts by size, for example 63 to 72 N-m for M12, plus fastener-specific values throughout the servicing section. p. 120
How is the manual delivered?
It is an instant digital download after purchase, with no shipping and nothing physical sent to you.
Is this Kubota V3800 Series Workshop Manual a digital download?
Yes, it is a 201-page searchable PDF with an instant download after checkout. Open it on a laptop, tablet, or phone and carry it straight to the shop floor.
Am I able to print pages from this Kubota V3800 Series manual?
Yes. The PDF carries no DRM, so you can print any page or section you need for the shop. It works with any standard printer.
Does this Kubota V3800 Series manual include wiring diagrams?
Yes. Full electrical schematics are included, with wire colors, connector locations, and circuit descriptions.
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