Aimco Brakes Pulse Tool AlphaT42 T62 Large Alpha AlphaT Air Motor Repair Manual

							Disassembly and Reassembly of the Shut - off Section  
ALPHA - T42S  ~   T47S & ALPHA - T42  ~   T62  
A. Disassembly of Shut - off Section
1. Remove the Front Casing, Pulse Unit ,   and Air Motor  from   the  tool.
2. On the straight tools ,   remove th e Reverse Lever; on the Pistol Tools, remove the  Valve Plug from the
side of the Handle Casing.
3. On the straight tool ,   remove the Rear Plate Spacer,  Reverse Valve Spacer, Shut - off  Valve Bushing,
Ball, Spring, Sh ut - off Valve, Supporter Ring ,   and O - rings.
4. On the  P istol  T ools ,   remove the Rear Plate Spacer,   Shut - off Valve Bushing, Ball,  Spring, Shut - off
Valve, Spacer, Packings ,   and O - rings.
B. Inspection
1. Shut - off Valve Bushing
 Inspect the Ball seat for oblon ging.  If damaged, replace.
2. O - Ring
 Inspect for chipping, tears, and cuts.  If damaged, replace.
3. Packing
 Inspect for damage.  If damaged, replace.
C. Re assembly
1. Install all O - rings.
2. On the  S traight  T ool ,   install the Ball and Spring into the   back of the Shut - off   Valve  Bushing.
3. Install the Supporter Ring and Shut - off Valve into the Shut - off Valve Bushing.
4. Install the assembled Shut - off Valve Bushing into t he Shut - off Valve Fixture with  the Shut - off Valve
up, lining up the threaded hole   in the Shut - off Va lve Bushing  with the slot for the Reverse Lever and
install it i nto the Handle Casing.  Holding  this in place ,   now install the Reverse Lever.
5. Install the Reverse Valve Spacer and the Rear Plate Spacer with the Air Motor.
6. On the  P istol  T ools ,   install the Packing and the Spa cer into the back of the Handle  Casing.
7. Install the Ball and Spring into the back of the Shut - off Valve Bushing.
8. Install the Packing and Shut - off Valve into the back of the Shut - off Valve Bushing.
9. Ins tall the Shut - off Valve Bushing Assembly into the Handle Casing.    Make sure  that the threaded hole
in the side of the Shut - off Valv e Bushing is lined up with the  hole in the side of the Handle Casing and
install the Valve Plug.
10. Install the Rear Plate  Spacer with the Air Motor.
11. Install the Air Motor, Pulse Unit ,   and Front Casing.
12. You  are now ready to test the tool. 
						

							Exploded View of the Shut - off Valve Section  
ALPHA - T42S & T47S 
Part  
Number   Description   Part  
Number   Description  
1  
2  
3  
4  
5  
6   Piston Rod O - Ring  
Shut - off Valve Bushing O - Ring  
Shut - off Spring  
Supporter Ring  
Piston Rod  
Ball   7  
8  
9  
10  
11   Spring  
Shut - off Valve Bushing  
Shut - off Ball  
Shut - off Valve  
Handle Casing   
						

							Exploded View of the Shut - off Valve Section   (cont.)  
ALPHA - T42 ~ T62 
Part  
Number   Description   Part  
Number   Description  
1  
2  
3  
4  
5  
6  
7   Valve Plug O - Ring  
Shut - off Valve Bushing  
Shut - off Valve Bushing O - Ring  
Shut - off Valve Bushing O - Ring  
Supporter Ring  
Piston Rod  
Shut - off Valve Ball   8  
9  
10  
11  
12  
13   Shu t - off Valve  
Valve Plug  
Handle Casing  
Piston Rod O - Ring  
Shut - off Valve Spring  
Handle O - Rings   
						

							Disassembly and Reassembly of the Shut - off Section   (cont.)  
ALPHA - T  
A. Disassembly of the Shut - off Section
1. Remove the Shut - off Valve Cover using a 17mm  wre nch and remove the Shut - off  Valve and Spring.
2. Remove the Head Cover and Head Cover Packing.
3. Remove the Piston Rod, Valve Cover, Pilot Valve Retainer, Ball, Spring , and  O - rings.     Some models
have a Packing in the Shut - off Valve Bushing.
B. Inspecti on
1. O - Ring
 Inspect for chipping, tears, and cuts.  If damaged, replace.
2. Packing
 Inspect for damage .    If damaged, replace.
C. Re assembly
1. Install all O - rings and Packings.
2. Install the Pilot Valve Spring and Ball into the Head Cover.
3. Insta ll the Pilot Valve Retainer with the small end u p and the Valve Cover into the  Head Cover.
4. Install the Piston Rod, Head Cover Packing ,   and Head Cover onto the Handle  Casing.
5. Install the Shut - off Valve Spring, Shut - off Valve , and the Shut - off Valve  Cover  onto the Head Cover.
6. The tool is now ready to test. 
						

							Exploded View of the Shut - off Valve Section  
ALPHA - T70 ~ T140 
Part  
Number   Description   Part  
Number   Description  
1  
2  
3  
4  
5  
6  
7  
8   Piston Rod  
Valve Cover  
Pilot Valve Retainer  
Pilot V alve Ball  
Piston Rod O - Ring  
Pilot Valve O - Ring  
Pilot Valve Spring  
Head Cover Packing   9  
10  
11  
12  
13  
14  
15   Shut - off Valve   
Shut - off Valve Cover O - ring  
Shut - off Valve  
Shut - off Valve O - Ring  
Shut - off Valve Spring  
Shut - off Valve Bushing  
Head Cover   
						

							Repair an d Adjustment of the Angle Head Pulse Tool  
CAUTION :    Read all instructions thoroughly before repairing tool.  
Safety :  
 Disconnect the air supply from
the  tool before repairin g,
adjusting torque, and  changing
sockets or extensions.  Wear eye and hearing
pr otection when using
hammers or power
tools.  Do not wear loose
clothing around power
equipment.
 Dispose of all oil and
grease properly.
A. Disassembly of the Angle Head
1. Remove  the Front Casing Nut and remove the Angle Head Assembly from the tool
2. R emove  the  Angle Head Casing Cover,  Driven   Gear, Bushing, Spindle Spacers , and  Bearings.
3. Remove  the Bearing Setter Nut from inside of the Front Casing.
4. Remove the Angle Casing, Bearing Setter, Bearings, Spacers, and Driving Gear.
5 . Clean all parts   and inspect for wear.
B. Inspection
1. Inspect all Bearings for side play and knocking.    Replace as needed.
2. Inspect Driven   and Driving Gear for grooving and pitting.     If present , replace as a  set.
C. Reassembly
CAUTION :  All shimming of the Gear L ash is performed on the Driven Gear.
1. Grease all Bearings, Driven ,   and Driving Gears.
2. Install the Driving Gear, Spacer, Bearing s, Adjusting Spacer (if present  when the tool was
disassembled) and Bearing  Setter  into the Angle Head Casing.
3. Install   the Angle Casing onto the Front Casing and secure with the Bearing Setter Nut.   Note :   Use a
service removable thread locker on the Bearing Setter Nut.
4 . Install the  Front   Casing onto the Air Motor.
5 . Install the  Wheel  Spindle  R ear Cover and Bearing i nto the front of the Angle Head Casing.
6 . Install the Bearing onto the Driven Gear.
7 . Install the Driven Gear Spindle and Driven Gear Collar into the Driven Gear.
8 . Install the Driven Gear   and  Adjusting Spacers (quantity may vary) an d tighten the  Ang le Head Cover so
that the Driven Gear tu rns freely with no up and down  movement.    Note :    Adjusting Spacers come in
different thicknesses so be sure to order a larger quantity than needed.
9 . If Driven Gear is binding , add   the  Adjusting S pacer;  if it moves   up and down to o   much ,   remove   the
Adjusting Spacers. 
						

							Exploded View of the Angle Head Section  
ALPHA - 70C, 70CH, T70C & T70CH  
Part  
Number   Description   Part  
Number   Description  
1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12   Angle Casing Cover  
Angle Casing Cover Fe lt Ring  
Bearing  
Driven Gear Spacer  
Hexagon Round Head Bolt  
Angle Casing  
Angle Casing O - Ring  
Driving Gear  
Adjusting Spacer  
Driving Gear Metal Spacer  
Hammer Casing Nut  
Bearing Setter   13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24   Front Casing  
Bearing Setter Nut  
Adjus ting Spacer  
Driven Gear  
Driven Gear Collar  
Driven Gear Spindle  
Bearing  
Driven Gear Spindle Cover  
Allen Head Cone Point Screw  
Driving Gear Spacer  
Bearing  
Bearing   
						

							Recommended Maintenance  
Air Motor & Angle Head Section  
The Air Motor should be cleaned an d inspected every 300, 000 cycles or six months, which ever comes first . 
Replace worn parts as needed.  
The Angle Head Section should be cleaned and inspected every 300, 000 cycles or six months, which ever comes 
first.    Replace worn parts as nee ded.   
						

							
Notes:  
						

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LIT - MAN400  
Rev. 
03/2016  Printed in USA  
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