Aimco Brakes Screwdriver LT Screwdriver Repair Manual
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- 8 -Exploded View of the Gear Casing Assembly US - LT Series Part Number Description Part Number Description 1 2 3 4 5 6 7 8 9 10 11 12 Snap Ring Bearing S pacer Gear Casing Planet Gear Needle Roller Planet Gear Needle Roller Spacer First Gear Cage Rotor Gear Needle Roller 13 14 15 16 17 18 19 20 21 22 23 Needle Roller Rotor Gear Spacer First Gear Cage Second Gear Cage Planet Gear Planet Gear Gear Cage Pl anet Gear Needle Roller Spacer
- 9 -Disassembly and Reassembly of the Air Motor Section Disassembly 1. Remove the Air Motor Casing from the Gear Casing. 2. Taking hold of the end of the Rotor, pull the Air Motor out 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 a nd remove the Bearing from the Rear Plate. 6. Thoroughly clean all parts. Inspection 1. Inspect Bearings for knocking and side play. 2. Inspect Cylinder for waviness. 3. Inspect Plates 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. Assembly 1. Press greased Bearing i nto Rear Plate and over the Rotor. Note : There should be a slight drag between the Rotor and the Rear Plate. 2. Lightly oil the Blades and install into the Rotor with the flat side out. 3. Slide Cylinder down over the Rotor, lining up the Roll P in wit h the center hole in the Rear Plate. 4. Grease Bearing and press into the Front Plate. Install the Front Plate onto the Rotor with the Bearing side up. 5. Slide the Air Motor Assembly into the Casing, lini ng up the Roll Pin on the side of the Front Pl ate with the slot in the Casing. Note : The Air Motor will stick out of the Casing about 1/16 th of an inch. 6. Thread the Gear Casing Assembly onto the Air Motor Casing and test the tool.
- 10 -Exploded View of the Air Motor Assembly US - LT Push t o Start Se ries Part Number Description Part Number Description 1 2 3 4 5 6 7 8 9 10 11 12 Gear Casing Bearing Front Plate Roll Pin Spring Reverse Valve Reverse Valve Bushing Pin Valve Rod Ball Filter Exhaust Deflector 13 14 15 16 17 18 19 20 21 22 23 Air Inlet Bushing Spacer Roll Pin Rotor Blade Cylinder Rear Plate Bearing Casing O - Ring Cone Spring
- 11 -Exploded View of the Air Motor Assembly (cont.) US - LT Pistol Series Part Number Description Part Number Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Bearing Front Plate Blade Roll Pin Cylinder Roll Pin Bearing Rear Plate Spacer Valve Rod Handle Bushing Packing Shut - off Valve O - Ring Handle Casing Roll Pin Rotor Rear Plate Valve Lever Allen Head Dog Point Screw Reverse Lever 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Reverse Valve Valve Rod Bushing Pin Roll Pin Spring Ball Reverse Valve Bushing O - Ring Ball Valve Cone Spring Inner Snap Ring Exhaust Stack Filter O - Ring Air Inlet Bushing Pin Pin Handle Jacket
- 12 -Exploded View of the Air Motor Assembly (cont.) US - LT Lever Series Part Number Description Part Number Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Ball Bearing Roll Pin Blades Cylinder Rear Motor Plate Ball Bearing Valve Rod Rear Plate Spacer Bushing Rear Valve Rod Reverse Lever Spring Reverse Valve Bushing Pin Roll Pin Valve Pin Valve Pin Bushing 18 19 20 21 22 23 24 25 26 27 28 29 30 3 1 32 33 34 Valve Filter Exhaust Deflector Air Inlet Bushing Front Motor Plate Roll Pin Rotor Roll Pin Valve Rod Cap Casing Shut Off Valve Cone Spring Valve Bushing O - Ring Valve Packing Air Inlet Connector Cone Spring
- 13 -Disassembly and Reassembly of the Angle Head Section Disassembly 1. Loosen and remove the Angle Head Casing Cover , Driven Gear, and Driven Gear Spindle. 2. Loosen Loc king Nut from the Clutch Casing and remove the Angle Head Casing. 3. Remove the Bearing from down inside the An gle Head Casing and remove the Driving Gear. 4. Thoroughly clean all parts. Inspection 1. Inspect the Driven and Driving Gears for pitting and grooving. 2. Inspect all Bearings for side play and knocking. 3. Inspect the Driven Gear Spindle for side we ar. 4. Replace all worn parts. Assembly 1. Set the Driven Gear into the Angle Head Casi ng Cover and install the Balls around the Driven Gear. 2. Install the Driven Gear into the Angle Head Casi ng and secure by threading the Angle Head Casing Cover i nto the Angle Head Casing. 3. Put a small amount of grease on the Driving Gear and install it into the Angle Head Casing. 4. Install the Adjusting Spacer and Bearing into the Angle Head Casing. Note : The Adjusting Spacer is used to set the gear lash. 5. Install the Angle Head Casing onto the Clutch Casing and test the tool.
- 14 -Exploded View of the Angle Head Assembly US - LT Series Part Number Description Part Number Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Angle Head Casing Cover Adjusting Spacer 1/16 Steel Ball 1/8 Steel Ball Driven Gear Driven Gear Spindle Round Plate Angle Casing Driving Gear Needle Roller Bearing Snap Ring Adjusting Spacer Ball Bearing Bit Band 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Needle Roller Bearing Driven Gear 1/8 Steel Ball Spring Angle Head Casing Cover Adjusting Spacer 1/16 Steel Ball Spacer Locking Nut Snap Ring Needle Roller Bearing Clutch Casing Sleeve O - Ring Clutch Casing
- 15 -LT Series Troubleshooting PROBLEM C AUSE SOLUTION Loses torque every time the fastener is run down. Finally the tool will not run. The Lock Pin did not get put back into the Spring Retainer . Put the Lock Pin in the Spring Retainer. Tool operates intermittently. One or more of the sh oulders on the Pilot Pin is rounded. Replace the Pilot Pin. Tool shuts off as soon as i t is started or tool shuts off but will not re - start . Spring under Pilot Pin has lost tension. Notch Pin is rounded. Notch Pin Band is stretched out of shape. The s houlders on the Pilot Pin are rounded. Replace Notch Pin, Band, and/or Pilot Pin. Replace Spring. Tool ratchets when it shuts off. Valve Rod too long. Bur on Pilot Pin or inside of Cam. Shorten Valve Rod. Clean bur off of Pilot Pin or Cam. Los s of RPMs Exhaust Filter is dirty causing back pressure. Replace Filter. Lever type only. Tool will not run. The Valve Rod is pushed through the Shut - o ff Valve. Replace Shut - off Valve. Tool runs all the time. O - ring has gotten pushed down int o the Casing. Air pressure is t o o high. Put the O - ring back into its seat. Lever type only. Tool will not reset. Valve Packing da maged or Valve Pin installed up side - down. Replace Valve Packing. Reinstall Valve Pin right - side - up. The tool will no t reset after it shuts off. The Anvil Spacer is back - wards. Turn the Anvil Spacer over. Pistol series only. Tool will not run. The Valve Rod Cap Pin has been pushed by the ball. Reset the Valve Rod Cap. Pistol series only. T ool run s all the t ime. Foreign matter under ball in Throttle assembly. Clean Throttle assembly.
- 16 -Recommended Preventative Maintenance It is recommended that the whole tool be cleaned and inspected every 250,000 cycles or six months, which ever occurs first.
AIMCO CORPORATE HEADQ UARTERS AIMCO CORPORATION DE MEXICO SA DE CV
10000 SE Pine Street Ave. Cristobal Colon 14529
Portland, Oregon 97216 Chihuahua, Chihuahua. 31125
Phone: (503) 254 – 6600 Mexico
Toll Free: 1 - 800 - 852 - 1368 Phone: (01 - 614) 380 - 1010
Fax: (01 - 614) 380 - 1019
AIMCO CHINA AIMCO EUROPE
Room 607, No. 3998 Hongxin Rd Dibao Plaza Avenida Río Gallo, 431
Minhang District, Shanghai 19174 Galápagos - Guadalajara
China Spain
Phone: 0086 - 21 - 34319246 Phone: + 34 673 34 99 25
Fax: 0086 - 21 - 34319245
LIT-MAN410
Rev. 03/2016
Printed in USA ©2016 AIMCO