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 TM 9-2815-226-34-1
(3) Cut counterbore to accept replacement sleeve:
CAUTION
DO NOT USE DRILL RATED AT LESS THAN 10 AMPERES OR OVER 450 RPM. USE
OF HIGH SPEED AND/OR LOW AMPERE RATED DRILL COULD DAMAGE DRILL
DUE TO HEAVY LOAD.
(a) Place ST-1168-48, a 1/2 in. (12.7 mm) universal driver, in 3/4 in. (19.05 mm) heavy duty hand drill.
(b) Engage universal driver with main housing assembly.
WARNING
APPROXIMATELY HALF WAY DOWN DURING CUT, TOOL BIT WILL BEGIN
CUTTING OUT OLD COUNTERBORE LEDGE. ENSURE THAT YOU HAVE A FIRM
GRIP ON DRILL TO PREVENT SLIPPAGE AND POSSIBLE PERSONAL INJURY.
CAUTION
KEEP TOOL BIT WELL OILED TO PREVENT BIT WEAR AND UNEVEN CUT.
(c) Keep a firm grip on drill and bore hole until drill free wheels. Immediately stop drill.
(d) Disconnect drill from boring tool.
(e) Pull up on needle valve knob to retract cutter plate from bore.
(f) Remove capscrews, spacers, and washers securing counterbore salvage tool to cylinder block.
(g) Remove salvage tool.
(h) Clean away all metal shavings.
(i) Deburr bore with emery cloth.
(j) Wipe counterbore clean.
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