Komatsu PC58UU-3 Excavator Service Manual

Table of Contents

01 GENERAL …………………………………………………………………………………………………………… 01-1
10 STRUCTURE, FUNCTION AND MAINTENANCE
STANDARD…………………………………………………………………………………………………………. 10-1
20 TESTING AND ADJUSTING……………………………………………………………………. 20-1
30 DISASSEMBLY AND ASSEMBLY……………………………………………………….. 30-1
90 OTHERS ………………………………………………………………………………………………………………. 90-1

GENERAL
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and lubricant specification charts.

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
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, ADJUSTING AND TROUBLESHOOTING
This section 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 mention in this section.

DISASSEMBLY AND ASSEMBLY KOMATSU Excavator PC58UU-3

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

When raising heavy components, use a hoist or crane. Check that the wire rope, chains and hooks are free from damage.
Always use lifting equipment which has ample capacity. Install the lifting equipment at the correct places. Use a hoist or crane and operate slowly to prevent the component from hitting any other part. Do not work with any part still raised by the hoist or crane.
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INSTALLATION OF ASSEMBLY SWING MOTOR AND SWING MACHINERY 

Lift the swing motor and machinery assembly (7) and place it in the specified position.
Adjust the position of the dowel pin by using guide bolt c. Attach 8 bolts and tighten them to the specified torque.

When installing the swing motor and machinery assembly, remove the swing motor if the position of the dowel pin mounting bolt cannot be adjusted due to relationship between the pinion gear and the circle gear of the machinery. Install the machinery by itself and then install the swing motor in the specified position.
After removing the swing motor, try to prevent foreign matter from entering the motor.

2. Connect the five hoses including the hoses (4) from the swing motor (3).

 

 

 

 

 

3. Attach the covers (2) and (1) behind the boom foot.

Start the engine to supply oil to the swing motor. During low idling of the engine, repeatedly turn the machine for several seconds.
Bring the work equipment to the oil level measuring position and add oil up to the specified level.
Bring the work equipment to the minimum turning position and stop the
engine. Loosen and tighten the hydraulic tank cap to release any existing pressure so that pressure, with a full tank, will be applied.
Start the engine and move each cylinder of the work equipment. Then, use the swing operation lever in fine operation and in full operation to check if the swing system is normal.