Komatsu 830E-AC Shop Manual page 83

Periodic Inspections
It is important that periodic inspections (every three
months) of stored equipment be performed to insure
the continued serviceability of all protective mea-
sures initially taken when the storage period began.
Items which should be checked at each inspection
interval are listed as follows:
1. Remove the weatherproof tape from the com-
partment doors and preform a Megger test as
described in the Vehicle Test Instructions.
Record the test results and compare them with
the recorded Megger readings taken when stor-
age first began, and those taken throughout the
storage period. Remove all test equipment and
close up the compartment. Reseal the compart-
ment doors with new weatherproof tape. If
Megger readings indicate a deterioration of
insulation quality, to below 2.0 megohms then
consideration should be given to providing
more protection.
2. Check all other weatherproofing tape. Replace
any that has become loose or is missing com-
pletely.
3. Check all heat sources. Replace or repair any
units which have become inoperative.
4. Check all machine surfaces which were coated
with flushing compound when storage began. If
compound appears to be deteriorating, it must
be cleaned off and renewed.
Placing Equipment Into Service After Storage
When taking equipment out of storage, perform the
following procedures:
When A Truck Is Operational
If a truck has been operated weekly throughout the
storage period, perform a complete visual inspection
of the Motorized Wheels, blowers, alternator and
control compartments. Repair any defects found,
then place the truck directly into service.
When A Truck Is Not Operational
If the truck was not operated weekly throughout the
storage period, perform the following procedures:
1. Remove all weatherproofing tape from control
compartment doors and ductworks.
2. Remove all screening material from ductwork.
3. Remove all heat sources from Motorized
Wheels, control compartments and the alterna-
tor.
4. Fill with recommended oil. Refer to the Motor-
ized Wheel Service Manual for the type and
A07006
amount oil to be used. This oil should be
drained and new oil should be added after 500
hours of operation.
5. Clean all Motorized Wheel grease fittings in the
axle box. Insure that all grease lines are com-
pletely full of grease. Then add the recom-
mended amount of grease to all fittings.
6. Install brushes in the Motorized Wheels, blow-
ers and the alternator. Make sure that brushes
move freely in their carbonways and that they
have enough length to serve until the truck's
next inspection period. Install new brushes if
necessary. Insure that all brush pigtail screws
are tight.
7. Perform a megohmmeter test. Refer to the
truck's Vehicle Test Instructions for the correct
procedure. If Megger readings are less than 2.0
megohms, the problem could be an accumula-
tion of moisture in motor or alternator. If this is
the case, the faulty component will have to be
isolated and dried out using procedures recom-
mended in the G.E.Service Manual.
8. Perform a thorough inspection of the Motorized
Wheels, alternator, blowers and control com-
partments. Look for:
a. Rust or dirt accumulation on machine sur-
faces
b. Damaged insulation
c. An accumulation of moisture or debris
d. Loose wiring and cables
e. Any rust on electrical connectors in the con-
trol compartment
f. Any loose cards in the card panels
g. Any accumulation of moisture or debris in
ductwork.
Clean and make repairs as necessary.
9. Check retarding grids and insulators for loose
connections and dirt accumulation. Clean and
make corrections as necessary.
10. Where applicable, check exciter drive belts for
cracks, and deterioration. If acceptable, set belt
tension to specification.
11. Before starting engine, turn on control power.
Check that contactors and relays pick up and
drop out normally.
Storage Procedures A7-15