Komatsu SK1020-5 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 SK1020-5 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

Precautions to be taken during installation

Tighten nuts and screws with the specified tightening torques.
• Install the flexible hoses, taking care not to entangle or twist them.
• Bend the cotter pins and stops in such a way as to secure them.
• When coating the threads with adhesives, clean the piece to remove oil and grease, then apply just enough adhesive to cover the threading in a uniform manner.
• When applying a liquid sealant, clean the surface involved, remove residual oil and grease, check that there are no dents or dirt, then apply the liquid sealant in a uniform manner.
• Clean all the parts, remove dirt, rust, burrs, or dents.
• Apply a film of engine oil over all the moving parts.
• Apply a film of anti-friction grease (Lithium EP MS2 NLGI 2) over all surfaces assembled with pressure, to avoid sticking
• After having mounted the snap-rings, check that they are firmly positioned in their seating.
• When installing electrical system jacks, remove any oil, dust or water that may have penetrated into them, then connect them firmly.
• If using eyebolts, check that they are not distorted, screw them in fully, and then align the eye with the hoisting hook.
• Mount the flanges in a uniform manner, and tighten the screws in crisscross sequence, to avoid excessive pull on one side only.