Komatsu Dump Truck HD405-7

REPLACE STEERING, HOIST OIL TANK FILTER ELEMENT

Turn the cap of oil filler (F) slowly to release the internal pressure, then remove the cap.

Remove bolt (1), then remove cover (2).

Take out the element, then wash the inside of the case and the removed parts.

Install the new element, then install cover (2) with bolt (1).

Lower the dump body and stop the engine.

Turn the cap of oil filler (F) slowly to release the internal pressure.

Remove plugs (1) of the 2 strainers at the front of the hydraulic tank.

WARNING: The parts and oil are at high temperature after the engine is stopped, and may cause burns. Wait for the temperature to go down before starting the work.

Refill capacity: 38 liters (10.04 US gal)

Remove drain plug (1), then install the standard drain hose.

Set a container in position to catch the oil, then loosen drain the valve (2) slowly to avoid getting oil on yourself, and drain the oil.

Check the drained oil, and if there are excessive metal particles or foreign material, please contact your Komatsu distributor.

Remove the drain hose, then tighten drain valve (2) and drain plug (1).

Using the filter wrench, turn filter cartridge (3) to the left and remove it.

Clean the filter holder, fill the new filter cartridge with oil, then coat the seal and thread of the filter cartridge with oil (or coat thinly with grease) and install.

Warning: This maintenance check requires trained personnel with PPE!

Sign off on the dump truck maintenance

Warning: Ask your Komatsu distributor to carry out the following works

High-pressure piping clamp replaced

Fuel spray prevention cap replaced

Starting motor and alternator overhauled

Sign off on the maintenance work

CHECK, CLEAN OR REPLACE AIR CLEANER

After the outer element has been cleaned 6 times, or if the air cleaner element has been used for one year, replace the outer element, inner element, and O-ring. For details of the procedure for replacement, see "REPLACE ELEMENT (PAGE 4-25)".

If the maintenance caution lamp lights up and the character display displays action code "E01" and "AIR FILTER" during operation immediately after the outer element is cleaned, replace the element even if the outer element has not been cleaned 6 times or the air cleaner element has not been used more than 1 year.

Do not replace the element before the dust indicator reaches 7.5 kPa. If it is cleaned frequently, the filtering effect of the air cleaner will drop, and this will reduce the service life of the engine.

1. Check if the dust indicator (1) displays 7.5 kPa. If it is displaying 7.5 kPa, clean the outer element.

There is maintenance caution lamp (2) on the machine monitor. If the maintenance caution lamp lights up and the character display (3) displays "E01" and "AIR FILTER" during operation, the air cleaner is clogged. Clean the air cleaner element in this case, too.