Komatsu 830E-AC Shop Manual page 81

ELECTRIC DRIVE TRUCKS
Storage Instructions and Procedures
This instruction provides the recommended proce-
dures for protecting equipment from damage during
both short-term and long-term storage periods and
for maintaining adequate protection while in storage.
Also included are instructions for placing this equip-
ment into service after having been stored.
For the purposes of this instruction, a short-term stor-
age period is considered to be less than three
months; a long-term storage period is considered to
be three months or longer.
General Electric recommends a maximum storage
period of three years, with these storage procedures
being repeated after each year. After a storage
period of three years or more, the Motorized Wheels
should be removed and sent to an overhaul facility
for teardown and inspection of seals and bearings.
These should be replaced if necessary.
Periodic (every three months) inspections should be
made to determine the lasting qualities of long-term
storage protection measures. Such inspections will
indicate the need for renewing protective measures
when necessary to prevent equipment deterioration.
Proper storage of this equipment is vital to equipment
life. Bearings, gears, and insulation may deteriorate
unless adequate protective measures are taken to
protect against the elements. For example, bearings
and gears in the Motorized Wheel gear case are sus-
ceptible to the formation of rust; insulation in rotating
electrical equipment can accumulate moisture; and
bearings may become pitted.
NEVER APPLY ANY SPRAY, COATING OR
OTHER PROTECTIVE MATERIALS TO AREAS
NOT SPECIFICALLY RECOMMENDED.
It is also important to note that these instructions
cannot possibly anticipate every type of storage con-
dition and, therefore, cannot prevent all equipment
deterioration problems caused by inadequate stor-
age. However, these instructions should be consid-
ered as a minimum procedure to achieve the best
possible equipment life and the lowest operating cost
when the equipment is returned to service.
NOTE: Local conditions and/or experience may
require ADDITIONAL procedures and/or additional
storage precautions.
A07006
Placing Equipment Into Storage
Perform the following instructions when preparing
General Electric equipment for storage. There are
three main equipment categories to consider:
1. When storing a truck that is operational.
2. When storing a truck that is not operational.
3. When storing major components (Motorized
Wheel, alternator, etc.).
These three major categories are the basis for deter-
mining required protective measures.
NOTE: In addition to these instructions, refer to truck
storage instructions.
When Storing A Truck That Is Operational
When a fully operational truck is being placed into
storage for less than three months, the best protec-
tive measure which can be taken is to drive the truck
once a week for at least 30 minutes. Prior to driving
the truck, the rotating equipment should be Meg-
gered and:
1. If greater than 2 megohms, run normally.
2. If less than 2 megohms, isolate condition and
correct before running.
Driving the truck circulates oil in the gear case to
keep gears and bearings lubricated and free from
rust. It also prevents deterioration of the brushes,
commutators and slip rings.
When a fully operational truck is being placed into
storage for three months or longer, and the truck
cannot be operated weekly throughout the storage
period as indicated above, perform the following
instructions:
1. Drain oil from the gear case and install rust pre-
ventive 4161 (product of Van Straaten Chemi-
cal Co.)or equivalent. Fill per General Electric
Motorized Wheel Service Manual.
2. Megger the wheels as indicated in the instruc-
tions above. Operate the truck for at least 30
minutes to insure that the rust preventive com-
pound has been thoroughly circulated through-
out the gear case. Stop the truck and drain the
rust preventive compound.
NOTE: Do not run a LOADED truck with rust
preventive compound in Motorized Wheel gear
cases.
Storage Procedures A7-13