1998 Takeuchi TB007 Compact Excavator Workshop Manual (P/N 07.98 10445)

For repair work on the 1998 Takeuchi TB007 compact excavator, this workshop manual covers machines with serial numbers 1073001 and higher and the Yanmar 2TN66L-UTBA diesel engine.

Navigation and diagram detail: PDF text search is unavailable. Bookmarks open the five main sections, and small wiring and hydraulic schematic labels require enlargement. The page titled "Diagram of Lever Pattern" contains no diagram.

• Engine and cooling: Engine, radiator, hydraulic pump, and fuel tank removal and installation, with engine specifications and pump-coupling construction.

• Hydraulic repair: Gear-pump disassembly, inspection, discharge testing, control-valve service, relief-pressure adjustment, and cylinder rebuilding, leak testing, and air bleeding.

• Travel and slew: Travel-motor reduction-gear disassembly, slew-motor and brake-valve repair, slew-bearing replacement, and swivel-joint centering.

• Undercarriage and attachments: Crawler-belt, track-adjuster, track-roller, and idler service, plus boom, arm, bucket, swing-bracket, and dozer-blade removal and installation.

• Hydraulic diagnosis: Fault-isolation charts for loss of power, travel deviation, slew overrun, cylinder drift, and problems with crawler-width adjustment.

• Electrical and control layouts: Two wiring diagrams divided by serial range, starter-switch connection tables, wire-color charts, and A Type (ISO) and G Type (JCB) hydraulic schematics.

Written for personnel engaged in machine maintenance, the manual is suited to mechanics equipped for hydraulic testing, component lifting, and assembly inspection.

Engine Installation and Machine Structure

The drive-system section explains the engine mounts, pump coupling, radiator, and cooling-hose layout. Fuel-system coverage shows the fuel tank and lines, filters, and water separator.

Engine procedures cover removal and installation; internal engine overhaul is outside this manual's scope. Upper-frame, seat, and cover removal are also documented, along with operator-control linkages and lever-stroke adjustment.

Working with heavy hydraulics and suspended excavator components carries serious safety risks. The opening chapters outline safe hoisting guidelines and hydraulic pressure relief precautions.

Hydraulic Repair and Component Inspection

Gear-pump inspection distinguishes normal housing contact marks from excessive wear. Control-valve coverage includes load-check, port-relief, and anti-cavitation valves, with inspection criteria for spools and block bodies.

Cylinder procedures distinguish the boom cylinder's cushioning parts from the other cylinder assemblies. Dimensioned drawings specify installation, fitting, and seal-correction jigs; the travel-motor section also provides a floating-seal installation-jig drawing.

The repair cautions address cylinder-seal damage from off-center rod insertion and hydraulic-pump cavitation when tank pressurization is omitted.

Travel, Slew, and Crawler-Width Control

Travel-motor procedures cover the counterbalance valve, geroller alignment, and planetary reduction gears. Slew-motor work extends to the pinion and bearings, valve timing, and brake-valve pressure adjustment.

The swivel joint contains separate selectors for travel speed and dozer-blade/spanner-cylinder operation, with seal inspection and circuit leak tests. The spanner cylinder changes crawler width, and the undercarriage section documents crawler-tension adjustment and component installation positions.

Wiring Variants and Hydraulic Fault Finding

The electrical diagrams distinguish serial numbers 1073001–1073463 from 1073464 and higher. The later layout identifies a fusible link and an EU maintenance-light socket. Starting, charging, glow-plug, lighting, and gauge circuits are shown with connection and wire-color information.

The A Type (ISO) hydraulic drawing identifies control valve SV3-9030, while the G Type (JCB) drawing identifies SV3-9029.

Dedicated troubleshooting charts connect symptoms to checks of pumps, valves, motors, and cylinders. For boom drift, the documented tests distinguish internal cylinder leakage from control-valve leakage, helping narrow the repair target before teardown.

Wear Limits and Performance Specifications

Servicing standard charts cover pin and bushing clearances, sprocket teeth profiles, track rollers, idlers, and attachment axial clearances. Performance tables separate standard and allowable values for cylinder drop, travel, slew backlash, and bearing play.

Torque tables address hydraulic hoses, fittings, and ISO-strength bolts. Fluid-capacity and lubricant tables accompany unit weight tables and working-range diagrams. Rated lift capacity charts distinguish blade positions and, for side lifting, retracted and extended crawler widths.

English PDF and Included Pages

One printable English PDF contains 230 pages in total. That count includes one cover, one introductory foreword, one section overview, five section dividers, and 15 blank or heading-only pages.