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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 PC400LC-5 MIGHTY

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Maintenance Plans for Komatsu Hydraulic Excavator Model PC400LC-5 MIGHTY

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1000 Hourly Hydraulic Excavator Maintenance

24.7.1 CHANGE OIL IN SWING MACHINERY CASE

WARNING: The oil is at high temperature immediately after the machine has been operated. Wait for the oil to cool down before carrying out maintenance.

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

WARNING: The oil is at high temperature immediately after the machine has been operated. Wait for the oil to cool down before carrying out maintenance.

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500 Hourly Hydraulic Excavator Maintenance

Warning: Engine is at high temperature immediately after the machine has been operated. Wait for engine to cool down before replacing the filter. Do not bring fire or sparks near the fuel.

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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4000 Hourly Hydraulic Excavator Maintenance

24.9.1 CHECK WATER PUMP

Check for oil leakage

Check for water leakage

Check for clogging of the drain hole

Any abnormality found?

If any abnormality is found, contact your Komatsu distributor for disassembly and repair or replacement.

Sign off on the water pump check

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2000 Hourly Hydraulic Excavator Maintenance

24.8.1 CHANGE OIL IN FINAL DRIVE CASE

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

Set a container under plug P to catch the oil.

Remove plugs (P) and (E) with the handle and drain the oil.

Check the O-rings in the plugs for damage. If necessary, replace with new ones.

Screw in plug P.

Add engine oil through the hole of plug F.

When the oil overflows from the hole of plug (E. install plug E. Tightening torque of plugs P and E: 70 ± 10 Nm (7 ± 1 kgm, 50 ± 7 lbft)

24.8.2 CHANGE OIL IN HYDRAULIC TANK, CLEAN STRAINER

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When Required Hydraulic Excavator Maintenance

24.2.1 CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT

WARNING

Never clean or replace the air cleaner element with the engine running.

When using pressure alr to clean the element wear safety glasses or goggles to protect the eyes.

Open the rear cover of the machine.

Checking

If the red piston can be seen in transparent position of dust indicator , clean the air cleaner element.

Cleaning the element

1. Remove wing nut 2 and take out outer element @. To prevent entry of dirt and dust, cover the air conncctor aide of the rear end of the air cleaner with a clean cloth and adhesive tape.

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