11
PREOPERATION PROCEDURES
PREPARATION FOR INITIAL USE
The tool, as shipped, has no special unpacking or
assembly requirements prior to usage. Inspection to
assure the tool was not damaged in shipping and does
not contain packing debris is all that is required.
CHECK HYDRAULIC POWER SOURCE
1. Using a calibrated fl owmeter and pressure gauge,
check that the hydraulic power source develops a fl ow
of 7-9 gpm/26-34 lpm at 1500-2000 psi/105-140 bar for
the CH15100, 8 gpm model.
2. Make certain the hydraulic power source is equipped
with a relief valve set to open at 2100-2250 psi/145-155
bar minimum.
3. Check that the hydraulic circuit matches the tool for
open-center (OC) operation.
CHECK TOOL
1. Make sure all tool accessories are correctly installed.
Failure to install tool accessories properly can result in
damage to the tool or personal injury.
2. There should be no signs of leaks.
3. The tool should be clean, with all fi ttings and fasten-
ers tight.
CHECK TRIGGER MECHANISM
1. Check that the trigger operates smoothly and is free
to travel between the “ON” and “OFF” positions.
INSTALL TOOL BIT
The CH15521 and CH15121 Chipping Hammers ac-
cept standard .580 inch hex shank or .680 round shank
tool bits.
TO INSTALL A HEX SHANK TOOL BIT
1. Slide the chuck outer sleeve toward the handle end
of the tool and then insert the tool bit. Release the
chuck outer sleeve.
2. Try turning the tool bit. If the tool bit does not turn,
no further adjustment is necessary. If the tool bit turns,
slide the chuck adjustor toward the tool bit end of the
tool and then turn it clockwise to close the hex blocks
against the tool bit shank. When the chuck adjustor is
properly set, it should “click” into place and the tool bit
should not turn.
Installing The Tool Bit
TO INSTALL A ROUND SHANK TOOL BIT
1. Slide the chuck outer sleeve toward the handle end
of the tool and then insert the tool bit. Release the
chuck outer sleeve.
2. If the tool bit can be inserted fully, no other adjust-
ments are necessary. If the tool bit cannot be inserted
fully, slide the chuck adjustor toward the tool bit end of
the tool and then turn it counter clockwise to open the
hex blocks and allow room for the tool bit shank. When
the chuck adjustor is properly set, it should “click” into
place and the tool bit should be fully inserted.
Connect Hoses
1. Wipe all hose couplers with a clean lint-free cloth
before making connections.
2. Connect the hoses from the hydraulic power source
to the hose couplers on the tool. It is a good practice
to connect the return hose fi rst and disconnect it last to
minimize or avoid trapped pressure within the tool.
3. Observe fl ow indicators stamped on hose couplers
to be sure that oil will fl ow in the proper direction. The
female coupler is the inlet coupler.
OPERATION
Chuck Outer
Sleeve
Chuck Adjustor
