Kubota SM-E2B Diesel Engine Workshop Manual, 2004– (P/N 9Y011-03173)

This Kubota SM-E2B series workshop manual covers the 2004– Z482-E2B, Z602-E2B, D662-E2B, D722-E2B, D782-E2B, and D902-E2B diesel engines. P/N 9Y011-03173 identifies the publication, which carries the KiSC June 2006 A issue marking and covers the Tier 2/Phase 2 E2B engines.

Searchable Text, Section Bookmarks and PDF Contents

Search and diagram detail: Body text and specification tables are searchable; lettering embedded in illustrations is not consistently included in text search. PDF bookmarks open the reader information and the General, Mechanism, and Servicing sections. Small labels in the regulator and stop-solenoid test diagrams are readable when enlarged.

One printable, English-language PDF contains 140 pages, including the front cover, reader information, three section contents pages, and publisher’s closing page.

Engine Overhaul, Injection Testing and Electrical Service

The following selected workshop topics outline the manual’s coverage. Additional subjects include battery specific-gravity checks and air-cleaner maintenance.

• Engine repair: Step-by-step disassembly and reassembly procedures for the cylinder head, valves, timing gears, pistons, connecting rods, flywheel, and crankshaft.

• Troubleshooting: Symptom-based tables for starting problems, uneven running, abnormal exhaust smoke, low output, oil-pressure faults, overheating, and battery discharge.

• Fuel injection: Injection-timing adjustment, pump-element and delivery-valve tightness tests, nozzle spray checks, opening-pressure adjustment, and nozzle-holder servicing.

• Cooling and lubrication: Thermostat testing, radiator and cap leakage checks, oil-pressure diagnosis, oil-strainer removal, and oil-pump clearance inspections.

• Starting and charging: Starter, dynamo, and alternator disassembly, component tests, glow-plug checks, and testing of both engine stop-solenoid types.

• Workshop references: General and component-specific torque tables, factory specifications, allowable wear limits, performance curves, dimensional drawings, and special-tool information.

Written for servicing personnel, this manual supports work requiring diesel-engine service knowledge, measuring equipment, and the specified workshop tools.

Engine Mechanism and Maintenance

The mechanism section explains the half-floating head cover and closed breather, with illustrations showing their construction. Separate coverage for the Z602-E2B and D902-E2B describes coated pistons, extended oil pans, and gear-case cooling fins.

The maintenance schedules support tracking of fuel-hose inspections, oil-filter replacement, and fan-belt service. They distinguish standard, optional-depth, and extended oil pans, so oil-service requirements can be matched to the engine configuration.

For mechanism details beyond this volume, Kubota refers to the separate Diesel Engine Mechanism Workshop Manual, Code No. 9Y021-01870, which is not included.

Cylinder Head, Timing Gears and Bottom End

Factory wear limits and inspection procedures provide a reference for deciding whether internal components require correction or replacement. Coverage includes cylinder-head flatness and crack checks, valve-guide replacement, seat correction and lapping, gear-backlash measurement, and cylinder boring and honing.

Crankshaft sections distinguish model-specific removal procedures and bearing arrangements. Undersize-journal drawings and bearing identification tables support machining and replacement selection; assembly illustrations also show thrust-bearing oil-groove orientation.

The cylinder-head instructions warn that uneven tightening can deform the head. Piston-installation precautions address damage to the chrome-plated ring surfaces and resulting cylinder trouble.

Injection Pump Tests and Nozzle Service

The fuel section distinguishes injection-pump removal and installation from internal pump repair. Internal injection-pump repairs are assigned to a Kubota-authorized pump service shop. The included tests assess pump-element and delivery-valve tightness, while nozzle procedures cover spray condition, valve-seat sealing, and holder disassembly.

The Injection Timing Map relates settings to model and rated speed. Soft-metal gasket shims are covered as part of timing adjustment and pump replacement, with separate installation procedures for energize-to-stop and energize-to-run configurations.

Before inspection or teardown, review the manual’s safety precautions. Fuel escaping under pressure can penetrate the skin, making the injection-testing warnings particularly relevant.

Starter, Charging and Stop-Solenoid Diagnosis

Electrical coverage distinguishes electromagnetic-drive and planetary-gear-reduction starters, supported by exploded assembly views and component inspection limits. Dynamo output checks and alternator rotor, stator, rectifier, and IC-regulator tests extend the coverage beyond replacement instructions.

The Regulating Voltage circuit diagram, regulator connector view and continuity chart, and Engine Stop Solenoid Test circuit show test connections and terminal assignments. The regulator continuity chart specifies the analog testers used to establish its results.

Special-tool references include oil-pressure tester 07916-32032. Dimensioned drawings for valve-guide, bushing, and crankshaft-bearing tools support fabrication of the workshop tools described in the manual.

Examples of Valve, Bearing and Injection Specifications

For all covered engines, the cold intake and exhaust valve-clearance specification is 0.145–0.185 mm. For the Z602-E2B and D902-E2B, the crankshaft front-journal clearance at bearing 1 is 0.034–0.106 mm.

Nozzle opening-pressure testing uses a factory range of 13.73–14.71 MPa. The D902-E2B specification table lists a maximum bare speed of 3,800 rpm for the 3,600-rpm rated version.