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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
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Work Order Templates

Pre-built workflows to keep your asset running smoothly.

Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Procedures

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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Parts

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Drive Motor
B2 Rollers
Tensioning System
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Komatsu Hydraulic Excavator PC400

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Maintenance Plans for Komatsu Hydraulic Excavator Model PC400

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1000 Hourly Hydraulic Excavator Maintenance

24.7.1 CHANGE OIL IN SWING MACHINERY CASE

Set an oil container under drain valve P under the machine body.

Loosen drain valve P under the body, drain the oil, then tighten the drain valve again.

Remove bleeding plug 1.

Add the specified amount of engine oil through gauge hole G.

After refilling, install bleeding plug 1.

24.7.2 CHECK OIL LEVEL IN DAMPER CASE, ADD OIL

Open the door on the right side of the machine.

Remove plug G and check the oil level.

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100 Hourly Hydraulic Excavator Maintenance

24.4.1 LUBRICATING

1. Set the work equipment in the greasing posture below, then lower the work equipment to the ground and stop the engine.

2. Using a grease pump, pump in grease through the grease fittings shown by arrows.

3. After greasing, wipe off any old grease that was pushed out.

1. Boom cylinder foot pin (2 points)

2. Boom foot pin (2 points);3. Boom cylinder rod end (2 points)

4. Arm cylinder foot pin (1 point)

5. Boom-Arm coupling pin (1point)

6. Arm cylinder rod end (1 point)

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When Required Hydraulic Excavator Maintenance

24.2.1 CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT

Is the red piston visible in the transparent position of the dust indicator?

Is the air cleaner body interior and the cover clean?

Are there small holes or thinner parts on the element after cleaning?

Are the folds or gasket or seal of the element damaged?

Is the cleaned element installed and fixed with the wing nut?

Are the seal washer or wing nut broken?

Is the evacuator valve clean after cleaning?

24.2.2 CLEAN INSIDE OF COOLING SYSTEM

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500 Hourly Hydraulic Excavator Maintenance

Replace Fuel Filter Cartridge

Check Swing Pinion Grease Level, Add Grease

Clean and Inspect Radiator Fins, Oil Cooler Fins

Sign off on the 500 Hourly Hydraulic Excavator Maintenance

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250 Hourly Hydraulic Excavator Maintenance

24.5.1 CHECK OIL LEVEL IN FINAL DRIVE CASE, ADD OIL

WARNING

The oil is at high temperature immedlately after the machine has been operated. Wait for the oil to cool down before starting the operation.

If there is still pressure remaining inside the case, the oil or plug may fly out.

Loosen the plug slowly to release the pressure.

Prepare a handle.

1. Set the TOP mark at the top, with the UP mark and plug perpendicular to the ground surface.

2. Remove plug F using the handle. When the oil level reaches a point 10 mm below the bottom of the plug hole, the correct amount of oil has been added.

3. If the oil level is too low, install plug F, operate the travel levers, and drive forward or in reverse to rotate the sprocket one turn.

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