CAUTION: Disconnect wrench from power air supply
If necessary, heat motor housing (Ref. No. 1)
to, no more than, 250°F to aid removal of motor
and clutch assemblies.
Coat O.D. of oil seal (Ref. No. 16) with a good
grade rubber cement and press into motor
housing (Ref. No. 1) with lips of oil seal
pointing toward chuck chamber.
Press new reverse valve bushing (Ref. No. 28)
in motor housing flush with face of motor
housing, match narrow slot in reverse valve
bushing with trigger slot. Using a #19 drill, drill
through stop pin hole to allow stop pin to pass
through wall of reverse valve bushing. Ream
reverse valve bushing (Ref. No. 5) with a
standard 7/16" reamer.
Tighten Allen Set Screw (Ref. No 27) In motor
housing to 30-35 inch lbs.
Tighten throttle cap (Ref. No. 24) in valve block
to 230-250 inch lbs.
Coat O. D of oil seal (Ref. No. 35) with a good
grade rubber cement and press into front end
plate (Ref. No 37) with lips of oil seal toward
bearing relief in end plate.
Tighten four Allen Cap Screws (Ref. No. 26) to
55-60 inch lbs.
Daily before using and before putting tool into service,
pour about one tablespoonful of recommended oil into
air inlet. An Air Line Lubricator installed at the end of the
air pipe leading to this pneumatic tool is necessary to
assure a constant and adequate supply of lubricant to
At each inspection period, drain oil from motor housing
and add ¾4 oz. of recommended clutch oil.
At each inspection period, clean open bearings and
At each inspection period, clean clutch parts and
lubricate splines of shank, hammer cam, and rotor with a
molybdenum disulphide lubricant.
Use a turbine or spindle grade oil with a viscosity of 100-
150 S.U.S. at 1000F which contains a rust inhibitor.
A good grade clutch oil with a viscosity equivalent to
SAE #30 motor oil is recommended for use in the motor
Bearing Grease is recommended for use in open
Use a good grade bearing grease such as Humble Oil
Co's. Andok C grease or equivalent.
recommended for use on splines of rotor, cam, and
ORDER REPLACEMENT PARTS
THROUGH DEALER FROM WHOM
PRODUCT WAS PURCHASED
Please provide following information:
Serial Number (if any)
Part Description and Number
as shown in Parts List.
If dealer cannot supply
Dayton Electric Mfg. Co.
5959 W. Howard St.
Chicago, Illinois 60648