09/19/16
Page 11
Patriot
®
180
GENERAL ASSEMBLY INSTRUCTIONS
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Assembly should be performed in a clean environment.
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All parts should be cleaned thoroughly and wiped dry before assembly.
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Oil all parts by hand using Rock Drill Oil to insure easy assembly.
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Coat all thread connections with a thread compound to allow joints to thread easily.
HAMMER ASSEMBLY
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Using the 2" (51 mm) brass rod, tap the slip fit bearing into the chuck end of the case.
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Using a pry bar, install the snap ring into the snap ring groove located against the bit
bearing.
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Install the thrust washer against the shoulder of the chuck threads and insert the chuck
bushing in the ID under cut of the chuck. With the bit face down, place the chuck
over the top of the bit. Align the splines and lower chuck completely onto the bit.
Rotate the chuck counterclockwise until the splines meet and insert the drive plates
between the chuck and bit splines. See Figure 2-3.
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Place the bit retaining rings, with the bit retaining ring o-ring installed, over the bit, and
on top of the chuck.
Drive Plate Positioning as Viewed from Top of Chuck
Figure 2-3
