When Storing A Truck That Is Not Operational; When Storing A Major Component - Komatsu 930E-2 Shop Manual

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 proce-
dure. Record the Megger readings for future ref-
erence. They will be helpful in determining if
deterioration is being experienced when addi-
tional Megger tests are made as part of the peri-
odic inspection.
4. Lift all brushes in the Motorized Wheels, blowers
and the alternator. They must be removed from
the brushholder. Disconnecting brush pigtails is
not required.
5. Cover any open ductwork with screening material
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). Methanol should
be used to remove all residue. When clean, coat
with Tarp B rust preventive.
Refer to General Electric Motorized Wheel Service
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 commuta-
tor 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 continu-
ously.
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 following:
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 Vehicle
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 preven-
tive compound has been thoroughly circulated
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 con-
sequence. These areas will require the same seal-
ing 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 Storing
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 environment. 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 A07003