12
S&C Instruction Sheet 811-510
Inspecting the Key Parts of the Loadbuster Loadbreak Tool
Step 14
Trigger assembly Inspection
Examine the trigger to make sure the spring is working
and the key is still secure and in place. Look for evidence
of excessive wear, a broken spring, or burning or pitting of
any part of the assembly. Replace entire trigger assembly
if necessary. See Figure 17.
Spring
Key
Figure 17. Inspect the trigger assembly.
Step 15
Moving contact assembly inspection
Spring
Moving contact
Trailer
Blue dot
Flexible cable
Figure 18. Inspect the moving contact assembly.
Trailer
Figure 19. Measure the diameter of the trailer. Do not measure
the chamfered ends.
NOTICE
Do not soak any part of the Loadbuster Loadbreak Tool
in cleaning solution or water . The Loadbuster Loadbreak
Tool and its components are not designed for submer-
sion in water or solvent . Damage to the tool may result .
To inspect the moving contact assembly:
(a) Use water and a liquid abrasive-type household
cleanser to remove surface carbon deposits from the
trailer and the moving contact. Thoroughly rinse and
dry the assembly immediately after cleaning. DO NOT
submerge the moving contact assembly in water or
cleaning solution. See Figure 18.
(b) If necessary, use an Emery cloth to polish the moving
contact. Avoid heavy filing that would change the
dimensions.
(c) Pull either end of the assembly to extend the spring.
Examine the flexible cable inside the spring for signs of
wear or fraying. Make sure the cable is securely
connected at both ends. See Figure 18.
(d) Using a micrometer, check the diameter of the trailer.
Note: Exercise care to avoid mechanical damage to the
trailer. See Figure 19.
If the trailer diameter is 0.650 inch (16.5 mm) or less at
any point other than the chamfered ends, or if the flexible
cable is frayed, replace the moving contact assembly and
inner tube assembly. S&C also recommends replacing the
stationary contact assembly, guide bearing, and the silencer
at the same time.
NOTICE
Loadbuster Tools with a red dot on the trailer (manufac-
tured before August 2002) can be operated 500 to 1,000
times before inspection and maintenance are required .
Tools with a blue dot on the trailer (manufactured during
or after August 2002) can be operated 1,500 to 2,000
times before inspection and maintenance are required .
