Aimco Brakes Pulse Tool UXT UXRT AlphaT Series Pulse Unit Repair Manual

							 
- 11 -  
 
Disassembly and Reassembly of the Pulse Unit (cont.) 
 
4. Install the Locator Pins into the Liner and install the Torque Adjuster O-ring onto Torque 
Adjuster and the Supporter Ring into the Front Liner Plate. Install Front Plate onto the Liner. 
 
5. Install Driving Blades and Springs into Anvil. Place in Driving Blade Setter. 
 
6. Install Anvil and Driving Blades into Liner. 
 
7. Install the Ball and Spring into back of Relief Valve.  On the UXR-T series, slide Rollers into Anvil. 
 
8. Install the Piston with new O-ring.  Cap end to the inside of unit into the Rear Liner Plate.  
Install Locator Pins in rear of Liner and assemble Rear Liner Plate.  Note:  Make sure that the 
Spring goes into the Rear Liner Plate. 
 
9. Install Rear Plate O-ring. 
 
10. Place the hex end of the Rear Liner Plate into vise with soft jaws. The drive end of the Anvil should 
be up. 
 
11. Install O-ring onto Front Plate.  
 
12. Put a light amount of Pulse Fluid into the Liner Casing, align the Liner Casing with the Guide 
Pins and the Torque Adjuster openings, and slide the Liner Casing downward until the Liner 
Casing is flush with the Liner. 
 
13. Clean all oils from the threads of Liner Setter and Liner Casing.  Lightly coat the threads with a 
good cleaner/degreaser.  Put a light coat of a good quality thread locker on the threads of the 
Liner setter and thread it into the Liner Casing. 
 
14. Place the Press Rod Cap into the Setter and set the Liner Casing Setter, located at the rear of the 
Pulse Unit onto the correct size pins in the blocks of the setter.  Note:  This is left-hand thread. 
 
15. Place Pulse Unit assembly onto the correct size base plate and between the clamp plates.  Run 
the press rod down into the setter and secure it with the lock nut.  Torque the Press Rod to the 
recommended tonnage for the Pulse Unit being worked on.  Note:  See chart for the proper 
tonnage.  Tighten the clamp screws securing the Pulse Unit. 
 
16. Set a 1/2” torque wrench into the Setter and tighten the Liner Setter to the recommended torque 
shown on the chart. 
 
17. Remove the Pulse Unit from the repair fixture. 
 
D. Fluid 
 
1. Recommended fluid is AIM/Uryu Pulse Unit Fluid part number Pulstar. 
 
E. Hand snd Vacuum Tank Filling Procedure 
 
1. Place the Pulse Unit, Anvil upward, into bench vise. 
 
2. Check the freeness of the Torque Adjuster, then back off completely, counter-clockwise, and 
remove Oil Filler Plug. 
 
3. Rotate the Anvil until the Driving Blade is visible in the Oil Filler Opening, then turn the Anvil 
1/8th of a turn.  This places the Driving Blades at an open position. 
  
						

							 
- 12 -  
 
Disassembly and Reassembly of the Pulse Unit (cont.) 
 
 
4. The Pulse Unit is now set for maximum fill.  Any measurable change in fluid level will affect the 
torque output and the consistency of the tool. 
 
5. Put the Pulse Unit in Vacuum Tank to purge all air out of the Pulse Unit, proceed to step 13.  If 
you do not have a vacuum tank, proceed to step 6. 
 
6. Fill the 3cc Syringe with fluid.  Turn Syringe upside-down and push plunger to purge all air from 
the Syringe. 
 
7. Insert the Needle on the Syringe and insert it into the Oil fill hole.  Fill the Pulse Unit completely 
with fluid from the bottom up, slowly. 
 
8. Fill 3cc Syringe with fluid and again purge all air bubbles. 
 
9. Turn the Anvil clockwise only to purge the air from Pulse Unit.  As air bubbles appear, over-fill 
unit with 3cc Syringe and continue to turn the Anvil clockwise.  Go slowly by seal point to 
prevent air from sucking back into the Pulse Unit. 
 
10. When no bubbles are present, Pulse Unit is air free. 
 
11. Install Oil Fill Plug and cycle Pulse Unit two to three times.  This will push fluid down under the 
Relief Valve.  Remove Oil Filler Plug and purge for air. 
 
12. Rotate Anvil until Driving Blade is again visible in Oil Filler Opening and turn Blade 1/8 of a 
turn from opening. 
 
13. Fill 3cc Syringe with 1cc of fluid for accurate drawing of fluid. 
 
14. Wipe off excess fluid from top of the unit.  Oil level should be at the top of the Oil Filler Plug 
Threads before drawing. 
 
15. Using the 3cc Syringe, draw out the specified amount of fluid per specifications for each model 
(see chart). 
 
16. Thread Oil Filler Plug into hole and tighten. 
 
17. You are now ready to test the Pulse Unit. 
 
F. Torque Adjustment 
 
1. To properly adjust the torque, turn the Adjuster with proper size Allen wrench clockwise until 
the Adjuster Valve bottoms-out.  Then back off counter-clockwise for maximum torque as 
follows:  UX-T, UXR-T and Alpha-T series; back off one half turn. 
 
2. Reverse procedure for minimum torque.  
						

							 
- 13 -  
 
UX-T, UXR-T and ALPHA-T Series Fill & Draw Sheet 
 
 
 
Key Model of this  
Tool Group 
 
Full Volume 
of Liner Oil 
in Pulse Unit 
(approx.) 
Volume to be 
Removed from 
the Full Volume 
(approx.) 
Torque to 
Tighten Liner 
Casing Setter 
(approx.) 
Torque to 
Tighten Liner 
Casing Setter 
(approx.) 
Load to 
Press on 
Rear Liner 
Plate 
Load to 
Press on 
Rear Liner 
Plate 
     Hydraulic Press P.T.R.F. 
Model cc’s cc’s NM Ft-Lbs Tons Ft-Lbs/Nm 
ALPHA-T40D(S), T42D(S)(P), 
T45(S)(D)(P), T46(D), 
T47(S)(D)(P), T50(D) & 
T52(D) 
5.0  70+/-5 52+/-4   
ALPHA-T60(D) & T62(D)(MI) 6.2  85+/-5 63+/-4   
ALPHA-T65(S) & 
T70(S)(C)(CH) 8.8 0.75+/-.05 110+/-5 81+/-4 2 40/54 
ALPHA-T80 12.0 0.80+/-.05 135+/-5 100+/-4 2 40/54 
ALPHA-T90 14.0 0.95+/-.05 150+/-5 110+/-4 3 60/81 
ALPHA-T100 19.0 1.40+/-0.1 185+/-10 137+/-7 3 60/81 
ALPHA-T130 24.0 1.80+/-0.1 185+/-10 137+/-7 3 60/81 
ALPHA-T140 31.5 1.90+/-0.1 200+/-10 148+/-7 3.5 70/95 
UX-T700, T700L & TL700 8.8 0.70+/-.05 110+/-5 81+/-4 2 40/54 
UX-T800 & TL800 12.0 0.80+/-.05 135+/-5 100+/-4 2 40/54 
UX-T900 & TL900 14.0 0.95+/-.05 150+/-5 110+/-4 3 60/81 
UX-T1000 & TL1000 19.0 1.40+/-0.1 185+/-10 137+/-7 3 60/81 
UX-T1400 & TL1400 31.5 1.90+/-0.1 200+/-10 148+/-7 3.5 70/95 
UX-T1620 & TL1620 33.5 2.10+/-0.1 200+/-10 148+/-7 4 80/108 
UXR-T1820 & TL1820 48.0 3.50+/-0.1 260+/-10 192+/-7 4 80/108 
UXR-T2000 & TL2000 84.0 6.00+/-0.1 300+/-10 221+/-7 4 80/108 
UXR-T2400S 105.0 10.50+/-0.2 650+/-10 480+/-7 5 100/74 
UXR-T3000S 185.0 13.50+/-0.2 700+/-10 517+/-7 5 100/74 
 
  
						

							 
- 14 -  
 
Exploded View of the Pulse Unit 
 
 
 
UX-T & Alpha-T Pulse Unit 
 
 
 
 
  Part 
Number 
 
Description 
 Part 
Number 
 
Description 
 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
 
Liner Casing 
Front Liner Plate O-Ring 
Roll Pin 
Front Liner Plate 
Locator Pins 
Liner 
Anvil Supporter Ring 
Anvil 
Driving Balde 
Driving Blade Spring 
Locator Pins 
Spacer 
Oil Fill Screw 
Oil Fill Screw O-Ring  
 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
 
Relief Valve Spindle Supporter Ring 
Relief Valve Spindle O-Ring  
Relief Valve Spindle 
Relief Valve Pin 
Relief Valve 
Relief Valve O-Ring 
Relief Valve Ball 
Relief Valve Spring 
Anvil O-ring 
Rear Liner Plate O-Ring 
Piston 
Piston O-Ring 
Rear Liner Plate 
Liner Casing Setter 
 
   
						

							 
- 15 -  
 
Recommended Maintenance 
 
 
Pulse Unit 
 
The Pulse Unit Oil should be changed every 150,000 cycles or 180 days, whichever comes first.  Once a 
year, the Pulse Unit should be rebuilt and a repair kit installed.  Remember to always use genuine Uryu 
Parts and Pulstar Pulse Unit Fluid.   
						

							 
 
 
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