Hitachi ZX670LC-5G, ZX670LCR-5G and ZX670LCH-5G Excavator Service Repair Manual
The manual is applicable for the Hitachi Excavator Model:
- ZX670LC-5G
- ZX670LCR-5G
- ZX670LCH-5G
Format: PDF
Language: English
Service Manual consists of the following:
For Model ZX670LC-5G, ZX670LCR-5G and ZX670LCH-5G as mentioned above:
Service Manual (Troubleshooting) Vol. No. TOJBF-EN
Service Manual (Operation) Vol. No. TTJBF-EN
Workshop Manual Vol. No. WJBF-EN
Circuit diagram
SI Units (International System of Units) are used in those manual.
Manual guide composition
Hitachi ZX670LC-5G, ZX670LCR-5G and ZX670LCH-5G service manual consists of the Operating, Troubleshooting and the Workshop Manual.
- Information included in the Service Manual: Technical information needed for redelivery and delivery, operation and activation of all devices and systems, operational performance tests, and troubleshooting procedures.
- Information included in the Workshop Manual: Technical information needed for maintenance and repair of the machine, tools and devices needed for maintenance and repair, maintenance standards, and removal / installation and assemble / disassemble procedures.
To avoid injury and damage refer to the service manual and be sure to use appropriate lifting techniques and equipment when lifting heavy parts.
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Hitachi ZX670LC-5G, ZX670LCR-5G and ZX670LCH-5G Excavator Service Repair Manual
Abnormal Engine Noise Manual Instructions Extract:
| Conditions | Possible Cause | Correction |
| Engine Knocking | Use of wrong fuel | Use correct fuel |
| Fuel injection timing improperly adjusted | Adjust the injection timing | |
| Improper injection nozzle starting pressure | Adjust or replace the injection nozzle | |
| Improper spray condition | ||
| Broken piston ring resulting in low compression pressure | Replace the piston ring | |
| Defective fuel injection nozzle resulting in fuel drippage after fuel injection | Replace the fuel injection nozzle | |
| Gaseous leakage noise | Loosely connected exhaust pipes | Tighten the exhaust pipe connection |
| Broken exhaust pipes | Replace the exhaust pipes | |
| Loose injection nozzles and/or glow plug | Tighten the injection nozzles and/or glow plug Replace the washer | |
| Loosely connected exhaust manifold | Tighten the exhaust manifold connections | |
| Damaged cylinder head gasket | Replace the cylinder head gasket | |
| Continuous noise | Loose fan belt | Readjust the belt tension |
| Loose cooling fan | Retighten cooling fan | |
| Worn or damaged water pump bearing | Replace the water pump bearing | |
| Worn or damaged alternator bearing | Replace the alternator bearing | |
| Valve clearance improperly adjusted | Adjust the valve clearance | |
| Slapping noise | Valve clearance improperly adjusted | Adjust the valve clearance |
| Damaged rocker arm | Replace the rocker arm | |
| Worn or damaged crankshaft and/or thrust bearings | Replace the crankshaft and/or thrust bearing | |
| Worn or damaged crankshaft and/or connecting rod bearings | Replace the crankshaft and/or connecting rod bearings | |
| Worn or damaged connecting rod bushing and piston pin | Replace the connecting rod bushing and/or piston pin | |
| Worn or damaged piston and cylinder liner Foreign material in the cylinder | Replace the piston and cylinder liner |
