Komatsu 830E-AC Shop Manual page 894

SERVICE
Between oil drains, the only normal servicing
required is routine replenishment of oil at the reserve
supply tank. Maintenance of running levels should be
checked routinely; manually before starting the
engine and with the LED system monitor on the
reserve tank pumping unit (11, Figure 31-1) when the
engine is running.
There is also an in-line filter (screen) installed at the
inlet of the fill valve (3, Figure 31-1). This filter
requires no periodic maintenance, but it can be
cleaned by removing it from the system and back
flushing through the filter.
CAUTION: Always check the engine oil level
before starting engine. Use the engine dipstick.
Every 10 Hours, or once each shift:
1. Before starting engine, check oil level using
engine dipstick. Oil level should be in normal
operating range. If not, check the reserve sys-
tem for proper operation.
2. The engine oil quality will be best if the reserve
tank is kept reasonably full. Check the oil level
in the reserve tank. As a minimum guideline, if
the oil is below the half-full level, fill the tank
manually so the oil is just visible in the top sight
glass or by using the automatic fill control
method.
3. After starting and warm-up, check engine oil
level signal (LED) to verify that the engine is
being maintained at the preset running oil level.
The signal should alternate between periods of
'steady on' and 'flashing'.
M31-6
Every 500 Hours:
1. Change all engine and system filters, if applica-
ble.
2. More system failures result from bad electrical
connections than all other causes combined.
Check electrical system connections for tight-
ness, corrosion and physical damage. Check
battery, alternator, oil pressure switch, junction
boxes, remote control fill box and circuit break-
ers.
3. Examine electrical cables over their length for
possible damage.
4. Small hose leaks can cause system malfunc-
tion. Examine all hoses, including those on the
reserve tank and the ones leading to and from
the engine for leaks, cracks or damage. Check
all fittings for tightness, leakage or damage.
Changing Oil
1. Drain both the engine sump and the reserve
tank. Refill both engine and reserve tank with
new oil to proper levels.
2. Change engine and reserve tank filters as
required.
3. Start engine and check for proper operation.
NOTE: Do not use the oil in the reserve tank to fill the
engine sump. Both must be at proper level before
starting engine.
The engine oil level should be checked with the
engine dipstick at every shift change. The oil level in
the reserve tank must also be checked at every shift
change. Oil must be visible in the middle sight gauge.
If not, add oil to the reserve tank until oil is visible in
the top sight gauge
Reserve Engine Oil System M31004