Doosan G06030001, Operation & Maintenance Manual

Page: 47 / 90

47 G60, G80, G100, G150, G200-SIIIA OM Manual
MAINTENANCE / DAILY OR EVERY 10 HOURS (CONT’D)
CHECK AIR FILTER
Figure 35: Check Dust Unloader Valve
Figure 36: Check Air Restriction Indicator
1. If air filter has a dust unloader valve (A), squeeze
valve tip to release any trapped dirt particles.
2. Check air intake restriction indicator (B). When
indicator is red, air filter needs to be cleaned.
CAUTION
Maximum air intake restriction is 6.25 kPa (0.06 bar)
(1.0 psi) (25 in. H2O). A clogged air cleaner element
will cause excessive intake restriction and ar educed
air supply to the engine.
3. Make a thorough inspection of the engine
compartment.
NOTE: Wipe all fittings, caps, and plugs before
performing any maintenance to reduce the
chance of system contamination.
CHECK FUEL FILTER
NOTE: Engines have two fuel filters (primary and
final) equipped with a water-in-fuel sensor.
Depending on application, an indicator light
on the instrument panel will signal the
operator that water should be drained from
filter bowls.
Figure 37: Drain Water from Fuel Filters
Check fuel filter (C) and (D) daily for water or debris and
drain as necessary.
1. Loosen drain plugs (A) at bottom of both fuel filter two
or three turns.
2. Loosen air bleed plugs (B) two full turns and drain
water into a suitable container.
3. When fuel starts to drain out, tighten drain plugs
securely.
4. Bleed fuel system.
A Dust Unloader Valve
B Air Restriction Indicator
A Drain Plugs
B Air Bleed Plugs
C Primary Fuel Filter
D Final Fuel Filter