Part of the Hitachi Repair Manuals.
A travel motor weeping oil or a pump losing pressure is where guesswork gets expensive, and this 587-page Hitachi workshop manual (OEM ID KM-1LSE) covers four Zaxis compact excavators. This Hitachi Zaxis 30, 35, 40 and 50 workshop manual PDF works through the pump device, control valve, swing device and pilot valve, with exploded views showing how each assembly comes apart. Undercarriage chapters take the swing bearing, travel device, track adjuster, idlers and rollers apart in order, while engine servicing fills nearly half the book, from cylinder head and crankshaft to injection pump and turbocharger. On a ZAXIS40 or 50, plunger to rotor bore clearance must stay at 0.40 mm or less; on your 30 or 35, torque lower roller bolts to 245 N·m (181 lbf·ft). Guess one clearance and you pay for that pump twice. Bookmarks split the scanned pages by section, and your copy rides on a laptop to wherever the machine is parked.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 2-3 | Additional References, Page Numbering, Safety Alert Symbols, Unit Conversion |
| Safety | 4-31 | Safety Alert Symbols, Signal Words, Emergency Procedures, Protective Clothing, Machine Operation, Maintenance Safety |
| General Information | 32-55 | Tightening, Bleeding Air, Painting |
| Upperstructure | 56-161 | Canopy, Counterweight, Pump Device, Control Valve, Swing Device, Pilot Valve, Solenoid Valve |
| Undercarriage | 162-235 | Swing Bearing, Travel Device, Center Joint, Track Adjuster, Front Idler, Upper and Lower Roller, Track |
| Front Attachment | 236-305 | Cylinder |
| Engine Mechanism | 306-349 | Engine Body, Lubricating System, Cooling System, Intake/Exhaust System, Fuel System, Turbo Charger System |
| Engine Servicing - General and Engine Body | 350-473 | General Precautions, Troubleshooting, Servicing Specifications, Maintenance Check List, Cylinder Head, Piston and Connecting Rod, Flywheel and Crankshaft |
| Engine Servicing - Lubricating and Cooling Systems | 474-547 | Draining Water and Oil, Oil Pump, Cooling System, Fan Belt, Radiator, Water Pump |
| Engine Servicing - Fuel System | 548-557 | Injection Pump, Injection Nozzle, Fuel Tightness |
| Engine Servicing - Electrical System | 558-577 | Starter, Alternator, Glow Plug, IC Regulator, Rectifier |
| Engine Servicing - Turbo Charger System | 578-585 | Checking, Disassembling and Assembling, Turbocharger |
| Electrical and Hydraulic Circuit Diagrams | 586-587 | Electrical Circuit Diagram, Hydraulic Circuit Diagram |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Zaxis 30, 35 | ||
| Upper roller mounting bolt torque | 88 N⋅m (9 kgf⋅m) (65 lbf⋅ft) | p. 42 |
| Lower roller mounting bolt torque | 245 N⋅m (25 kgf⋅m) (181 lbf⋅ft) | p. 42 |
| ZAXIS40, 50 | ||
| Clearance between the plunger diameter and the rotor bore diameter | 0.40 mm or less | p. 132 |
| Clearance between the plunger and the shoe | 0.4 mm or less | p. 132 |
| Counterweight mounting bolt torque | 295 N·m (30 kgf·m, 217 lbf·ft) | p. 43 |
| All Models | ||
| Guide (1) to housing (13) torque | 74 to 88 N·m (7.5 to 9.0 kgf·m, 54 to 65 lbf·ft) | p. 160 |
| Tube (9) to housing (13) torque | 47 to 74 N·m (4.8 to 7.6 kgf·m, 35 to 55 lbf·ft) | p. 160 |
| Oil filter bypass valve opening pressure | 98 kPa (1.0 kgf/cm², 14 psi) | p. 354 |
| Thermostat opening temperature | approx. 71 °C (160 °F) | p. 356 |
| Air cleaner nozzle air pressure | 690 kPa (7 kgf/cm², 100 psi) | p. 452 |
| ZAXIS30, 35 | ||
| Counterweight mounting bolt torque | 540 N·m (55 kgf·m, 400 lbf·ft) | p. 42 |
| Swing device mounting bolt torque | 137 N·m (14 kgf·m, 101 lbf·ft) | p. 42 |
