10/03/16
Page 3
Patriot
®
45
9. PISTON
The piston functions as the only moving part in the hammer, control ling the operational
air cycle. The percussive action of the piston striking the bit transfers the energy
through the bit in order to fracture rock formations. A snap ring inserted in the main
bore prevents the piston from sliding out of the case when the chuck, bit, bit retaining
rings and bit bearing are removed.
10. CASE
The case is designed to contain the internal parts which make up the hammer
assembly. The case is reversible and hardened to resist wear and to extend life in
abrasive conditions. Double start threads on each end of the case allow for ease of
disassembly.
11.
SNAP RING
A snap ring positions the internal parts in the hammer and prevents the piston from
falling out when the chuck, bit retaining rings and bit are removed.
12.
BIT BEARING
The bit bearing guides the bit to insure proper alignment between the piston and the
bit. The bit bearing is placed into the chuck end of the case and is located by a snap
ring which is inserted into the main bore.
13.
BIT BEARING RETAINER O-RING
The bit bearing retainer o-ring sits in a groove in the case and retains the bit bearing.
14.
BIT RETAINING RINGS
The bit retaining rings are designed to allow the bit to move between the drilling and
cleaning positions and prevent the bit from coming completely out of the hammer.
The bit retaining rings consist of two matched halves and are held together with the
bit retaining ring o-ring.
15. CHUCK
The chuck threads into the bottom end of the case with double start threads. It has
internal splines that mesh with the splines on the bit body to transmit rotation.
Patriot
45
Summary of Contents for Patriot 45
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