6
JCT-3620 series Chipping Hammers
Setup and Assembly
Any missing parts or damage should be reported
immediately to your JET
®
distributor. Do not use a
damaged tool. Read this instruction manual
thoroughly for operation, maintenance and safety
instructions.
Box contents:
1 Chipping
hammer
1
Operation and parts manual
1 Warranty
card
Operation
The chipping hammer must
be properly lubricated before operation. See
“Lubrication” section.
Figure 1
1.
Install chisel (not provided) as follows. See
Figure 2.
2.
Place screwdriver or other tool in triangular
end of retainer spring, and pull spring out of
groove.
3.
Slide retainer off cylinder. If needed, insert
screwdriver into slot and use as wedge to
help loosen retainer.
4. Lubricate chisel shank with grease. Insert
chisel through rear of retainer, and rotate
chisel as needed until oval collar of chisel
falls into notch of retainer.
5.
Slide chisel and retainer onto cylinder. Chisel
shank should be fully inserted into cylinder,
and retainer slot should align with groove on
cylinder.
Figure 2 (chisel not provided)
6.
Install spring by feeding it into groove until
completely installed. If needed, spray
lubricant into groove to facilitate spring
insertion.
An unsecured tool can
be ejected from the cylinder with force,
causing injury. Retainer and lock spring
must be properly installed before using
chipping hammer.
7.
Remove protective cap from air inlet (Figure
1). If an in-line oiler is not being used, add 4
or 5 drops of air tool oil (not included) into the
air inlet.
8. Blow out air line to remove any dirt or
moisture, then connect air supply hose to
tool. Set air pressure to 90 psi.
IMPORTANT:
Connecting a quick-change
coupling directly to the tool is not
recommended, as vibration may cause the
connection to fail. Instead, add a leader hose
and install any quick-change couplings
farther down the line.
9. Hold chipping hammer firmly with both
hands. Place end of tool in contact with work
surface, and press trigger. Do not push too
hard; allow tool to do the work.
Note: This tool’s chipping rate (blows per
minute) is intended for larger surfaces – do
not attempt to break up small pieces of
concrete.
10. Release trigger to stop hammer.
Important:
DO NOT raise air pressure
above maximum rating for this chipping
hammer. If tool is not accomplishing task at
maximum air pressure and flow, use a larger
tool or different means to achieve task.
