Doosan L6-60HZ-T4F Operation And Maintenance Manual page 42

Operating & Maintenance Manual
Fuel Tank
In order to minimize condensation inside the fuel tank, refill as soon as possible after every
use or at the end of each work day. Use only clean, low sulfur fuel. When using a funnel,
ensure it is clean and free from dust. Every six months, drain any sediment or accumulated
condensate from tank.
Battery
Keep the battery posts and cable connections clean and lightly coated with a grease.
Fasteners
Monthly spot check several capscrews and nuts for proper torque. If any are found loose, a
more thorough inspection must be made and deficiencies corrected.
Instruments
Inspect the instrument lamps, gauges, and switches prior to start-up and during operation to
ensure proper functioning. Refer to Instrument and Control Panel Section for normal readings.
Running Gear
Every six months the wheel bearings, grease seals, and axle spindles should be inspected for
damage and wear (i.e., from corrosion, scratches, or metal particles). Replace any damaged
or worn parts. Repack wheel bearings.
Use a wheel bearing grease conforming to specification N.L.G.I. #2 LIthium base grease
(preferred) or MIL-G-10924 and suitable for all ambient temperatures.
Grease can be replaced in a wheel bearing using a special fixture or by hand as follows:
1. Place a spoonful of grease in the palm of one hand and take the bearing in the
other hand. Push a segment of the wider end of the bearing down into the outer
edge of the grease pile closest to the thumb. Keep lifting and pushing the
bearing down into the edge of the grease pile until grease oozes out, both from
the top and from between the rollers.
2. Rotate the bearing to repeat this operation on the next segment. Repeat until
you have the entire bearing completely filled with grease. Before installing
bearing, place a light coat of grease on the bearing cups which are pressed in
the hub.
NOTE: Excessive grease in the hub or grease cap serves no purpose due
to the fact that there is no way to force the grease into the bearing. The
manufacturer's standard procedure is to thoroughly pack the inner and
outer bearing with grease and then to apply only a very small amount of
grease into the grease cap. If bearing adjustment is required or the hub
has been removed for any reason, the following procedure must be
followed to ensure a correct bearing adjustment of 0.001" to 0.012" end
play.
1. While rotating hub slowly to seat the bearings, tighten spindle nut to
approximately 50 Ibs-ft. (68 Nm).
2. Loosen nut slightly to remove preload torque. Do not rotate hub.
44
Maintenance