INTRODUCTION MH6.6 / MH8.6 PREFACE To the reader This Workshop Manual is written for the Repair- Technician . It provides important information on how to perform skilful repairs. We recommend to consult the Workshop Manual and also the Hydraulic Excavator Operation and Maintenance Instruction Manual before initiating any repair-work operation. Utilize the Workshop Manual as well as the Operation and Mainte- nance Instruction Manual and the Parts Cata- log as a prompt-book and adviser, even if the Hydraulic Excavator technique is become familiar. By means of the Workshop Manual the expert technician will be able to carry out a skilful repair- work operation.
- information for carrying out the performance tests on the machine; - troubleshooting, information concerning the rec- ognition and correction of failures on the ma- chine, - technical information necessary for carrying out the Service and Repair operations on the Ma- chine, the equipment necessary for the mainte- nance operations, the information concerning the Standards to be applied in the Maintenance operations, the Procedures for the Removal and Installation operations as well as for Disas- sembly and Assembly operations. By means of the index contents a desired informa- tion can be easily achieved. For a better understanding the illustration of the part will be displayed.
Therefore differences in arrangement of the Hy- draulic Excavator are possible, whenever the lat- ter involves the univocal capability of the informa- tion. Use The Workshop Manual refers to the initial Machine configuration. Structural changes or rebuilding operations are not described in this Handbook. In this Workshop Manual the following information can be found: - Safety Instructions; - Technical Data and Special Tools; - Functional Description; - Performance Testing; - Troubleshooting and Failure Correction; - Repair Instructions.
In the Section Safety Instructions the recom- mended procedures are described, so that through the relevant compliance with, a risk of accident for the User and for the personnel re- sponsible of the maintenance operations on the machine can be avoided. In the Section Technical Data the Service Data, the change tables and lists of the needed Special Tools and Maintenance materials are indicated. In other Sections, for each mechanical group, when available can be found: - a functional description with information con- cerning the operation of the essential devices and equipments; Repair operations Carry out the necessary repair works as soon as possible.
This procedure will avoid the mainte- nance costs while increasing the availability of your Hydraulic Excavator. Pay always attention during all works to the Work- shop Manual warnings and cautions and to the Operation and Maintenance Instruction Manual. The Service Assistance will gladly carry out for you the works not described in the Workshop Manual. Always utilize the Original Spare Parts only. Further information material Please notice the supplementary information con- sulting the following Handbooks: - Operation and Maintenance Instruction Manual ; - Parts Catalog . Carefully read personal and machine SAFETY INSTRUCTIONS (at the beginning of this manual