Manual

1
Form ZCE682
Date 2003July30/B
Page 1 of 16
Printed In U.S.A.
INSTRUCTIONS FOR CH42A, CH43A, CH44A
PNEUMATIC CHIPPING HAMMERS
SAVE THESE INSTRUCTIONS!
INTENDED USE
The intended use of this tool is for cleaning, chipping, and chiseling concrete and metal surfaces. Do not use this tool
for any other purpose.
AIR SUPPLY
The efficiency of the tool is dependent on the proper supply of clean dry air at 90 psig (6.2 bar). The use of an in-line
filter and pressure regulator will insure maximum output and tool life. Before connecting the tool, blow out the air line to
remove water and dirt which may have accumulated.
LUBRICATION
An airline lubricator, set to deliver one drop per minute, is recommended. If a lubricator is not used, add
.04 oz (1.2 cc) of Sioux No. 288 air motor oil into the inlet daily or more frequently if used continuously.
HOSE AND HOSE CONNECTIONS
The supply hose I.D. should not be less than 1/2" (13 mm). Do not use coupling or fitting with a smaller I.D. than the
supply hose. When using quick couplers, install a leader hose between the tool and the quick coupler.
GENERAL OPERATION
Operation
Tools are operated with a trigger throttle on the outside of the handle. Be sure the chisel is against the work piece
before depressing the trigger. Release the trigger to stop the tool.
The chisel is installed or removed by pullling back the front lock ring on the chipper to release the chisel. After installing
a chisel, be certain that the lock ring is detented into position so the chisel is retained.
Never operate the scaler without a chisel because internal damage can occur to the tool.
Always unhook tool from the air supply before changing pistons.
IF THE TOOL LOSES POWER, CHECK THE FOLLOWING:
• Air pressure
Ensure that there is adequate supply of clean, dry air at 90 psig (6.2 bar).
• Chisels
Check for worn and broken chisels.
• Hose size
Ensure that the hoses, couplers, and fittings meet the criteria in “HOSE AND HOSE CONNECTIONS”.
• Sluggish or erratic operation
Flush tool out with a small amount of petroleum solvent and operate for a few seconds, then re-lubricate the tool
using air motor oil. If the tool still does not perform correctly it will need to be disassembled and repaired.
Read and understand "Safety Instructions For Air Tools" and these instructions before
operating this tool.