Komatsu 830E-AC Shop Manual page 82

Do not operate trucks without oil in the Motorized
Wheel gear cases.
3. Perform a megohmmeter test. Refer to the
truck's Vehicle Test instructions for the correct
procedure. Record the Megger readings for
future reference. They will be helpful in deter-
mining if deterioration is being experienced
when additional Megger tests are made as part
of the periodic inspection.
4. Lift all brushes in the Motorized Wheels, blow-
ers and the alternator. They must be removed
from the brush holder. Disconnecting brush pig-
tails is not required.
5. Cover any open ductwork with screening mate-
rial to prevent rodents from entering. Then tape
over the screen to prevent the entry of water
and dirt (allow breathing).
6. Examine all exposed machined surfaces for
rust or other dirt accumulation. Remove all dirt
as necessary. Remove rust by using a fine
abrasive paper. Old flushing compound can be
removed with mineral spirits (GE-D5B8). Meth-
anol should be used to remove all residue.
When clean, coat with Tarp B rust preventive.
Refer to General Electric Motorized Wheel Ser-
vice Manual for specifications.
7. Loosen exciter drive belts (where applicable).
8. Open all switches in the control compartment.
9. Install a 500 watt heat source inside all control
groups which house electronic control equip-
ment. These heat sources are to be energized
below 32° F (0° C) and de-energized above 41°
F (5° C).
10. Install a 500 watt heat source inside the com-
mutator chamber of both Motorized Wheels and
inside the alternator slip ring chamber. This will
minimize the accumulation of moisture. A hole
in the bottom of the hubcap will accommodate
the electrical cord for the heat source in the
Motorized Wheels. These heat sources are to
be energized continuously.
11. Seal compartment doors with a weatherproof
tape to prevent entry of rain, snow and dirt
(allow breathing).
A7-14
When Storing A Truck That Is Not Operational
When a truck which is not fully operational is being
stored for a period of any length, perform the follow-
ing:
1. Drain the oil from the gear case and install rust
preventive compound 4161 (or equivalent). Fill
per General Electric Motorized Wheel Service
Manual.
2. Jack each side of the truck (one side at a time)
enough to rotate the tires.
3. Connect a D-C welder as described in the Vehi-
cle Test Instructions (Wheel Motor inst. 400A,
arm & field in stress 900- 1000 rpm arm).
4. Rotate each Motorized Wheel (one at a time)
for at least 30 minutes to insure that the rust
preventive compound has been thoroughly cir-
culated throughout the gear case. Disconnect
the welder. Remove the jacks. Drain the gear
case.
5. If the truck is partially dismantled, pay careful
attention to ductwork, blower shrouds, etc.,
which may be exposed to weather conditions as
a consequence. These areas will require the
same sealing measures as in Step 5 above
which deals with protecting ductwork. Cover
exposed blower housings to prevent entry of
water and dirt.
6. Perform Steps 3 through 11 under When Stor-
ing a Truck that is Operational.
When Storing A Major Component
When storing a Motorized Wheel, alternator, blower
or control group for a period of any length, always
store it inside a warm, climate-controlled environ-
ment. Do not attempt to store individual components
where they would be exposed to inclement weather,
climatic changes, high humidity and/or temperature
extremes.
Storage Procedures A07006