January 2004
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10
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Public Server/Manuals/UAN Pneumatic Nutrunner
Disassembly and Reassembly of the Air Motor
Disassembly:
1.
On the UAN-611R and 701R, separate the air motor casing and the gear casing. On the UAN 830 and 950,
separate the handle casing from the air motor casing by loosening the valve body nut (right hand).
2.
On the UAN 611R and 701R, pull the air motor out of the casing. On the UAN-830 and 950, the air motor
slides out the back of the casing.
3.
Pull the front plate off and remove the bearing.
4.
Remove the blades from the rotor.
5.
Press the rotor out of the rear plate bearing and remove the bearing from the rear plate.
Inspection:
1.
Inspect bearings for knocking and side play.
2.
Inspect cylinder for waviness.
3.
Inspect plate for grooving.
4.
Inspect blades for splitting and grooving on the sides and ends.
5.
Inspect the exhaust filter for dirt.
6.
Replace all worn parts.
Reassembly:
1.
Press the greased bearing into the rear plate and over the rotor.
Note:
There should be a small amount of
drag between the rotor and the rear plate but no light.
2.
Lightly oil the blades and install into the rotor with the flat side out.
3.
Slide the cylinder down over the rotor, lining up the roll pin with the hole in the rear plate.
4.
Grease the bearing and press it into the front plate. Install the front plate onto the rotor with the bearing side
up.
Note:
The cylinder should be tight between the plate but the rotor should turn freely.
5.
Slide the air motor into the casing. On the UAN-611R and 701R, line up the pin on the side of the front
plate with the notch in the casing.
6.
Install the gear casing or handle back on to the air motor casing.
Summary of Contents for UAN-611R
Page 1: ...REPAIR MANUAL UAN Series Pneumatic Nutrunner ...
Page 15: ......
