Komatsu SK1026-5, SK1026-5N 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 SK1026-5, SK1026-5N 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

System Performance Test

This test is performed to establish the condition of all components in the system. Observe these conditions during testing: 1. Start engine and operate at 1200 to 1500 RPM.
2. Place fan in front of condenser to simulate normal ram air flow and allow system to stabilize.
3. Place a thermometer in air conditioning vent closest to evaporator.
4. Evaluate the readings obtained from the gauges to see if they match the readings for the ambient temperature.
5. As preliminary steps to begin checkout of the system, perform the following: A. Close all windows and doors to the cab.
B. Set air conditioning system at maximum cooling and blower speed operation.
C. Readings on the two manifold gauges should be within normal range, adjust for ambient temperature.
D. Compare evaporator discharge air temperature reading to see if it matches the recommended temperature for the ambient temperature and gauge readings obtained.
E. Carefully feel the hoses and components on the high side. All should be warm-hot to the touch. Check the inlet and outlet of receiver-drier for even temperatures, if outlet is cooler than inlet, a restriction is indicated.