Komatsu SK818-5, SK820-5 Skid-Steer Loader Service Manual

Table of Contents

10 STRUCTURE AND FUNCTION……………………………………………………………………………. 10-1
20 TESTING AND ADJUSTING………………………………………………………………………………… 20-1
30 DISASSEMBLY AND ASSEMBLY………………………………………………………………………. 30-1
40 MAINTENANCE STANDARD………………………………………………………………………………. 40-1

This SK818-5, SK820-5 shop manual is an aid to improve the quality of repairs by giving the operator an accurate
understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure
you understand the contents of this manual and use it to full effect at every opportunity.

This shop manual mainly contains the necessary technical information for operations performed in a service
workshop.

The manual is divided into chapters on each main group of components; these chapters are further divided into the
following sections.

STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give an understanding
of the structure, but also serves as reference material for troubleshooting.

TESTING AND ADJUSTMENTS
This sections explains checks to be made before and after performing repairs, as well as adjustments to be made at completion of the checks and repairs.
Troubleshooting charts correlating Problems to Causes are also included in this section.

REMOVAL AND INSTALLATION
This section explains the order to follow when removing, installing, disassembling or assembling each component, as well as precautions to be taken for these operations.

STANDARD MAINTENANCE
This section gives the judgement standards when inspecting disassembled parts

Pressurizing the tank

This operation should be performed every time the oil refueling cap is moved for removal of the pipes or other hydraulic equipment.
1 – Start the engine and position the machine as in the figure.
2 – Stop the engine, loosen the tank cap (1) and then close it again.
This operation lets air into the tank when the level of the remaining oil is at minimum.
3 – Start the engine and lower the working equipment to the ground.