These hydraulic excavators combine a tracked lower structure with a rotating upper body and digging attachment. Their electronic controls, hydraulic equipment and cab systems each have dedicated coverage in this publication.
The seven-section arrangement moves from specifications and maintenance standards into system operation, dismantling and troubleshooting. Examples identify the support required for the main lifting arm and the engine connections involved in removal. Diagnostic pages distinguish different signal conditions, such as a short circuit and a disconnected fuel-level sensor, so similar symptoms can be investigated separately.
What’s Covered Inside
- Specifications and workshop preparation: Machine and attachment dimensions, service tools, expected operation times, wear limits and test references.
- Electronic control and electrical circuits: Mechatro control-system operation and the circuits supporting machine functions.
- Hydraulics and cab cooling: System and component explanations for the hydraulic equipment and air-conditioning arrangement.
- Mechanical dismantling and assembly: Procedures for digging equipment, upper-body assemblies and the track-travel mechanism.
- Fault codes and symptom diagnosis: Error explanations, machine-response information, inspection points and use of diagnosis mode.
- Engine and documented options: The engine section and the installation procedures provided for the options covered by this edition.
Use the maintenance standards to prepare component work and the diagnostic tables to investigate electrical or hydraulic symptoms. Publication 87731197 is the reference for this listing; the separately numbered HS-engine edition 87731198 should not be treated as another included book.










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