Komatsu PC400 - Drain Water and Sediment from Fuel Filter Cartridge; Replace Hydraulic Tank Breather Element

24.5.7 DRAIN WATER AND SEDIMENT FROM FUEL
FILTER CARTRIDGE
Prepare a container to catch the fuel
Set the container to catch the fuel under the filter cartridge.
Loosen the drain plug at the bottom of fuel filter, and drain the
water and sediment collected at the bottom together with fuel.
When only clean fuel comes out, close drain plug.
24.5.8 REPLACE HYDRAULIC TANK BREATHER ELEMENT
1. Insert key @ in cap 0, then turn the key counterclockwise to
release the lock.
2.
3.
Push cap @ down to release the pressure inside the tank.
Keep cap @ pushed down, turn counterclockwise, and remove
cap 0.
4.
5.
6.
Remove ring GJ and take out the element.
Install new element @ with ring 0.
After installing the element, push cap @ down, and turn the cap
clockwise.
7.
Turn key @ clockwise to lock the cap, then remove key @.
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