Part of the Hitachi Repair Manuals.
Wrenching on a Hitachi EX75UR-5 or 75US-5? This 587-page workshop manual PDF (OEM W197E-00) covers both hydraulic excavator variants with the factory procedures Hitachi wrote for its own techs. You get a full pump and hydraulic component teardown section, page after page of step-by-step removal and installation work, tightening torque tables for every fitting size, and a troubleshooting section that traces failures back to the root cause. Metric-to-imperial conversion charts sit in the back, so you can work in either unit system. Set the 30-degree union joint (19 mm wrench) to 59 N·m and the 37-degree female fitting to 44 N·m; check plunger-to-cylinder-block clearance at 0.060 mm during pump rebuilds. Your excavator is down. Get the factory numbers, not forum guesses. Bookmarked PDF: search any spec by keyword and pull it up on any device in the shop.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Length | 580-581 | Millimeters to Inches, Feet to Meters |
| Area | 582-583 | Square Inches to Square Centimeters, Gallons to Liters |
| Mass | 584 | Pounds to Kilograms |
| Pressure | 585 | Pounds per Square Inch to Kilograms per Square Centimeter |
| Torque | 586 | Foot Pounds to Kilogram Meters |
| Temperature | 587 | Fahrenheit to Centigrade |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Pump suction hose replacement interval | Every 2 years | p. 48 |
| Pump delivery hose replacement interval | Every 2 years | p. 48 |
| Union joint 30° male 19mm wrench size torque | 59 N·m | p. 44 |
| Union joint 37° female 19mm wrench size torque | 44 N·m | p. 44 |
| Clearance between plunger outer diameter and cylinder block inner diameter | 0.060 mm | p. 87 |
| End play between plunger and shoe | 0.2 mm | p. 87 |
| Overload relief valve tightening torque | 49 to 54 N·m | p. 91 |
| Control valve 1 hose connection tightening torque (17 mm) | 9.8 N·m | p. 93 |
| Drum (28) weight | 29 kg (64 lb) | p. 246 |
| Bearing (2) inner race heating temperature | 50 to 70 °C (122 to 158 °F) | p. 246 |
| Upper Roller A Standard | 43 mm (1.7 in) | p. 299 |
| Upper Roller B Standard | 90 mm (3.5 in) | p. 299 |
