Dawson HPH 1200, User Manual

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FIGURE 6 Hammer Dolly photographs
Overworked 6500 dolly stuck in anvil body
must be replaced or it can cause the anvil body
to break. If dolly is not replaced when it has been
overworked, the anvil body can break due to
expansion of dolly material.
Debris embedded in dolly, remove debris
and continue. Severely cracked 6500 dolly should be
replaced.
4500 dolly starting to show signs of cracks after
150 hrs of piling. O.K. but if cracks extend to
the outer edge or the underside of the dolly, it
must be changed.
View showing underside of 4500 dolly after 150
hrs of work. No signs of cracking. O.K.