Komatsu Bulldozer D85EX-15

REPLACE ACCUMULATOR (FOR CONTROL CIRCUIT)

Accumulator replaced without disassembly, exposure to flame, puncturing, welding, or impact?

Accumulator disposed of properly with gas released?

Accumulator replaced by Komatsu distributor if performance dropped?

Water pump checked for oil and coolant leakage, or clogging of the drain hole?

See Section 'B REGULATION AREA (PAGE 4-18)'.

CHANGE OIL IN HYDRAULIC TANK, REPLACE HYDRAULIC OIL FILTER ELEMENT, CLEAN HYDRAULIC TANK STRAINER

Steps to change oil in hydraulic tank

CHANGE OIL IN DAMPER CASE, CLEAN DAMPER BREATHER

Steps to change oil in damper case

CHECK PIVOT BEARING OIL LEVEL, ADD OIL

Steps to check pivot bearing oil level

CHECKING CHARGE PRESSURE OF NITROGEN GAS IN ACCUMULATOR (FOR CONTROL CIRCUIT)

Steps to check charge pressure of nitrogen gas in accumulator

METHOD OF RELEASING PRESSURE IN HYDRAULIC CIRCUIT

WARNING: Immediately after the engine is stopped, the oil and parts are at high temperature, and may cause burns. To prevent this, wait for the temperature to go down before starting the operation.

Before opening the filter cases, depress the brake pedal several times to release the pressure, then lock the brake pedal. If there is still pressure inside the filter, oil may spurt out.

Open the engine side cover on the left of the machine.

Remove bolts (1) and cover (2) is lifted up, then take out element (3).

Clean inside of the case and the removed parts, then install a new element.

Replace the O-ring with a new one.

WARNING: The oil is at high temperature immediately after operations, so wait for the temperature to go down before starting the operation.

The undercover is heavy. Do not go directly under the cover when opening or closing it. When removing bolts (5), carry out the operation at the rear of the point immediately under the cover so that it is possible to escape at any time.

Remove drain cover (1) at the bottom Right of the power train case, then loosen drain plug (P) and drain the oil.

Lower the work equipment to the ground, then stop the engine.

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

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

CHECK ALTERNATOR DRIVE BELT TENSION, ADJUST

Check the standard deflection for the drive belt is approx.13 to 16 mm (0.51 to 0.63 in) when pressed by thumb (approx 99.1N {10 kg}) at a point midway between the drive pulley and alternator pulley.

Loosen bolts (1) and nuts (2), (4), and (5), then turn nut (4) and adjust the belt tension.

After adjusting, tighten bolts and nuts (2), (4), and (5), to secure alternator (3) in position.

See Section "B REGULATION AREA (PAGE 4-18)".

REPLACE HIGH-PRESSURE PIPING CLAMPS

Contact your Komatsu distributor to have the engine high-pressure clamps replaced.

REPLACE FUEL SPLAY PREVENTION CAPS

Contact your Komatsu distributor to have the fuel spray prevention cap replaced.;