1998 Takeuchi TB045 Compact Excavator Workshop Manual (P/N WK2-101E2)

This 1998 Takeuchi TB045 workshop manual, WK2-101E2 (July 1998), covers compact excavators from serial number 1453001 onward, with steel and rubber crawler data and cab/canopy differences.

Text search and diagram detail: Text search and embedded PDF bookmarks are not available. Small wiring labels require zooming; printed section contents and page references provide navigation.

• Hydraulic pumps and valves: Main and sub pump teardown, sectional control-valve service, pilot-valve inspection, relief-pressure adjustment and component troubleshooting.

• Travel and slew repair: Motor and swivel-joint removal and reinstallation, internal overhaul, travel parking-brake service and planetary-reduction inspection.

• Undercarriage: Steel and rubber crawler specifications, carrier-roller and track-roller replacement, idler and track-tension service, plus sprocket wear checks.

• Attachments and cylinders: Boom, arm, bucket, swing-bracket and dozer-blade removal, cylinder rebuilding, leakage testing, air bleeding and bucket-clearance adjustment.

• Performance diagnosis: Hydraulic pressure checks, pump-flow measurements, travel-deviation tests, slew stopping checks and cylinder drift diagnosis.

• Electrical systems: Serial-specific wiring diagrams, wire-color tables, lever-lock and TRASM circuit checks, plus fuse, limit-switch and solenoid fault isolation.

The manual is intended for machine maintenance personnel, with hydraulic testing and component repair requiring suitable workshop equipment.

Engine, Cooling and Machine Configuration

Specifications for the Yanmar 3TN100L-TBZ include compression ratio and rated output. Engine removal and installation are covered alongside engine mounts, the pump coupling, radiator, oil cooler and fuel tank; an internal engine overhaul chapter is not included.

Cab and canopy configurations have separate rated lift-capacity charts and boom-cylinder data. Dimensional drawings and attachment-combination tables identify bucket/arm pairings and their application limits.

Hydraulic Teardown and Repair Standards

Main-pump coverage follows the rotary groups, swash plate and displacement controller. The control-valve section explains the TRASM travel/attachment circuit, while cylinder chapters cover seal assemblies, cushion mechanisms and post-assembly tests.

The Hydraulic Circuit Diagram and Hydraulic System Diagram trace the main and pilot circuits. Travel-motor cross sections show the parking brake, counterbalance valve and two-speed mechanism.

Dimensioned special-tool drawings cover pilot-valve installation jigs, cylinder-seal fitting tools and travel-motor bearing and seal tools.

The manual flags loss of tank pressurization as a cause of pump cavitation and warns that misaligned piston-rod insertion can scratch cylinder seals.

Wear Limits and Fault Isolation

Service tables distinguish factory standards from allowable wear for slew-bearing play, track-roller flange width and drive-sprocket teeth. Separate steel/rubber crawler tension data and attachment pin/bushing clearances support undercarriage and attachment inspections. Component-specific torque tables, fluid capacities and lubricant recommendations accompany the service standards.

Troubleshooting flowcharts for weak hydraulics, travel veering and boom drift connect symptoms to pressure checks and internal-leakage tests. The boom tests distinguish cylinder leakage from control-valve leakage, helping narrow the repair target before parts are replaced.

Wiring Diagrams and Serial Breaks

The Electrical Wiring Diagrams separate 1453001–1455913 from 1455914 onward; the later diagram also marks changes from 1456695. Starting, charging, stop-motor, warning-indicator and cab circuits are shown with switch contact tables.

Safety notice: Before starting any hands-on work, mechanical adjustments, or maintenance, consult the full OEM documentation and follow its precautions for stored hydraulic pressure, suspended loads and electrical isolation.

English PDF and Included Pages

The manual is supplied as one printable, English-language 308-page PDF. The cover, foreword, section overview, five section-divider pages, eight blank pages and 11 pages containing only headers and footers are already included in that total.