Komatsu 830E-AC Shop Manual page 804

INSPECTION AND MAINTENANCE
SCHEDULES
Proper inspection and maintenance procedures
must be performed at the specified intervals to
be sure that the electric detection and actuation
system will operate as intended.
Daily
The machine operator should manually test system
power by pushing the button and noting illumination
of indicator light. This confirms battery power is avail-
able. If light is not illuminated, refer to "Troubleshoot-
ing" covered in this section.
Normal Maintenance Based On Actual Operating
Hours
Total system should be checked monthly or sooner,
depending on working conditions or truck mainte-
nance to perform total system check.
NOTE: The squib should be replaced after being in
service for five years. The proper disposal of the old
squib should be done by actuating the squib within
the actuator body. To do this, remove actuator LT-5-R
cartridge (PB0674) from body. Install test jumper
assembly to end of linear detection wire assembly.
This jumper will service as a wiring short and cause
the squib to discharge.
Remove jumper, clean actuator, install new squib
and reinstall cartridge.
System is now back in service.
Record date of installation of new squib.
1. Check all mounting bolts for tightness.
2. Check all wiring connectors for tightness and
possible evidence of corrosion.
3. Inspect detection and power wire as follows:
a. Check for wear due to abrasion (at wall pen-
etrations, around corners, etc.).
b. Check for damage from direct impact or
other abuse.
c. Check mounting locations for tightness.
d. Insure mounting hardware has not come
loose or been broken, either of which would
allow the wire to sag.
M2-10
4. Weigh the actuation cartridge on the electric
detection and actuation system. Replace car-
tridge if the weight is 1/4 oz. (7 g) less than that
stamped on cartridge. Check the cartridge
threads for nicks, burrs, cross threading and
rough on feathered edges. Examine gasket in
bottom of electric detection and actuation sys-
tem for elasticity. If the temperature is below
freezing, warm the gasket with body heat to
insure a good seal. Clean and coat lightly with a
high heat resistant silicone grease.
FIGURE 2-22. REMOVE CARTRIDGE AND
Do Not reinstall cartridge at this time.
5. Test system power by depressing button on
control module. Note illumination of light while
button is depressed.
6. Remove squib connector before proceeding
with next series of checks (Figure 2-22).
7. Using the furnished test kit assembly, proceed
to the end of the last length of detection wire.
Remove the plugged blank connector and
install the jumper assembly (retain plugged
blank connector to be reinstalled after testing is
completed).
8. With jumper in place, screw the squib connector
into receptacle on test module (Figure 2-23).
Light on the test module should immediately
illuminate. This test confirms that the detection
wire is properly installed and will function as
intended.
Fire Control Systems
DISCONNECT SQUIB
M02005