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23
COMPONENT WEAR LIMITS
Parts are to be replaced if not within the wear parameters. See Table 8 and Figure 17
below, for new dimensions see Table 9 page 24.
Table 8. Component Wear Limits
COMPONENT WEAR LIMITS
Front cap
bushing
When the clearance between the tool and the front cap bushing
exceeds .300 in. (8mm), a new front cap bushing is required.
(Approximately 500 hours of use).
Shank bushing
When the clearance between the tool and the shank bushing
exceeds .160 in. (4mm), a new shank bushing is required.
(Approximately 700 hours of use).
Tool
If .120 in. (3mm) of wear in the diameter is observed, a new tool is
required. (Approximately 500 hours of use). Keep tool sharp.
Tool set pin
If .080 in. (2mm) of wear in the diameter is observed, a new tool set
pin is required.
Front cap
If the corner of the front cap is worn to the edge of the front cap
bushing, a new front cap is required.
Piston
When indentation or serious damage on the piston surface is
observed, a new piston is required. (Approximately 2,000 hours of
use).
Figure 17. Wear Limit Points