Doosan G20E-5, Operation & Maintenance Manual, Page: 159 / 210

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Maintenance Section Maintenance Section
Air Cleaner Indicator-Check Air Cleaner Indicator-Check
Checking Service Indicator Checking Service Indicator
1. 1. Observe the air Observe the air cleaner service indicator. cleaner service indicator.
2. 2. Service the air cleaner when the RED band in Service the air cleaner when the RED band in
the service indicator, locks in
the service indicator, locks in the visible position. the visible position.
See topic, “Air Intake System - Che See topic, “Air Intake System - Check, Clean” in ck, Clean” in
“Every 250 Service Hours or “Every 250 Service Hours or Monthly”. Monthly”.
NOTE: NOTE: Service the element more frequently, as Service the element more frequently, as
required, in severe dust or lint conditions. required, in severe dust or lint conditions.
Also, service it more frequently where the
Also, service it more frequently where the
operator is required to wear a re
operator is required to wear a respirator. spirator.
3. 3. Close hood and seat Close hood and seat assembly. assembly.
Inspect Foot Pedal Operation Inspect Foot Pedal Operation
(G420F(E)/G424F(E) Only)
(G420F(E)/G424F(E) Only)
1. 1. Verify foot pedal travel is smooth without Verify foot pedal travel is smooth without
sticking.
sticking.
WARNING WARNING
When the acceleration pedal harness is When the acceleration pedal harness is
connected or disconnected, should be worked
connected or disconnected, should be worked
key OFF c
key OFF condition. ondition.
If not, occured malfunction, can cause the If not, occured malfunction, can cause the
personal injury.
personal injury.
Inspect Engine for Exhaust Leaks Inspect Engine for Exhaust Leaks
1. 1. Start the engine and allow it to reach operating Start the engine and allow it to reach operating
temperatures.
temperatures.
2. 2. Perform visual inspection of exhaust system. Perform visual inspection of exhaust system.
Repair any/all leaks found.
Repair any/all leaks found.
Walk-Around Inspection - Inspect Walk-Around Inspection - Inspect
For maximum service life of the lift truck, make a For maximum service life of the lift truck, make a
thorough walk-around inspection. Look around and
thorough walk-around inspection. Look around and
under the truck for such items as loose or missing
under the truck for such items as loose or missing
bolts, debris or dirt buildup, fuel, oil or coolant leaks
bolts, debris or dirt buildup, fuel, oil or coolant leaks
and cut or gouged tires.
and cut or gouged tires.
Have any repairs made and debris removed, as Have any repairs made and debris removed, as
needed. needed.
1. 1. Inspect the tires and wheels for cuts, gouges, Inspect the tires and wheels for cuts, gouges,
foreign objects, inflation pressure and loose or
foreign objects, inflation pressure and loose or
missing bolts.
missing bolts.
2. 2. Inspect the mast and lift chains for wear, Inspect the mast and lift chains for wear, broken broken
links, pins and loose rollers. links, pins and loose rollers.
3. 3. Inspect the hydraulic system for leaks, worn Inspect the hydraulic system for leaks, worn
hoses or
hoses or damaged lines. damaged lines.
4. 4. Look for transmission and drive axle leaks on Look for transmission and drive axle leaks on
the lift truck and on the g
the lift truck and on the ground. round.
5. 5. Inspect the operator’s compartment for loose Inspect the operator’s compartment for loose
items and
items and cleanli cleanliness. ness.
6. 6. Inspect the instrument panel for broken gauges Inspect the instrument panel for broken gauges
and indicator lights.
and indicator lights.
7. 7. Test the horn and other safety devices for Test the horn and other safety devices for
proper operation.
proper operation.