Aimco Brakes Pulse Tool UAT Series Repair Manual
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PO Box 16460, Portland, OR 97292-0460 503-254-6600 Fax 503-255-2615 UAT Series Repair Manual ISO 9001: 2015 Certified
Contents Page Number 1. Tools Needed to Repair the UAT Series Tools 4 2. Special Repair Fixtures for Repair of UAT Series Tools 5 3. Disassembly and Reassembly of the Pulse Unit 6-9 4. Disassembly and Reassembly of the Air Motor 10-11 5. Disassembly and Reassembly of the Shut-off Valve Section 12-13 6. Fill & Draw Sheet 14 7. Troubleshooting 15 8. Preventative Maintenance 15
– 4 –
Tools Needed to Repair the UAT Series Tools
1. Set of Picks
2. Standard Pliers
3. 6” Open-End Adjustable Wrench
4. 20” Open-End Adjustable Wrench
5. Hog Ring Pliers (250G Proto)
6. Set of Screwdrivers
7. Set of Punches
8. Dead Blow Hammer
9. 13 oz. Ball Peen Hammer
10. Three Ton Arbor Press
11. Set of V-Blocks
12. Three Ton Hydraulic Press (only needed if you are not using the PTRF-1-1)
13. Lap Plate
14. Parts Cleaning Tank
15. Wire Wheel
16. Service Removable Thread Locker (243 Blue Loctite)
17. PTRF-1-1 Universal Pulse Unit Repair Fixture
18. VC-101-2A Vacuum Tank
19. VCE-1-1 Vacuum Extractor
20. 1cc Glass Syringe and 0.5cc Glass Syringe
21. Pulstar Oil
– 5 – Special Repair Fixtures for Repair of UAT Series Tools Description Part Number Tool Model Disassembly and Reassembly of Valve Cover 145-019-6-5 UAT-30D, 40, 50 & 60 Disassembly and Reassembly of Valve Cover 147-019-6-5 UAT-70 & 80 Disassembly and Reassembly of Valve Cover 147-019-8-5 UAT-90 & 100 Disassembly and Reassembly of Valve Cover 130-019-2-5 UAT-130 Disassembly and Reassembly of Valve Cover 128-019-2-5 UAT-200 Disassembly and Reassembly of Casing Connector 144-036-0-5 UAT-30D Disassembly and Reassembly of Casing Connector 147-036-2-5 UAT-40, 50 & 60 Disassembly and Reassembly of Casing Connector 143-036-8-5 UAT-70 Disassembly and Reassembly of Casing Connector 115-036-3-5 UAT-80 Disassembly and Reassembly of Casing Connector 147-036-8-5 UAT-90 Disassembly and Reassembly of Casing Connector 148-036-2-5 UAT-100 Disassembly and Reassembly of Casing Connector 130-036-2-5 UAT-130 Insert of the Driving Blades 144-440-0-0 UAT-30D 144-440-0-1 Insert of the Driving Blades 190-440-6-0 UAT-40, 50 & 60 190-440-6-1 Insert of the Driving Blades 194-440-2-0 UAT-70 194-440-2-1 Insert of the Driving Blades 115-440-3-0 UAT-80 115-440-3-1 Insert of the Driving Blades 194-440-3-0 UAT-90 194-440-3-1 Insert of the Driving Blades 194-440-6-0 UAT-100 194-440-6-1 128-440-2-1 Insert of the Driving Blades 130-440-2-0 UAT-130 130-440-2-1 Insert of the Driving Blades 194-440-8-0 UAT-200 194-440-8-1 Anvil Sleeve for Installation of SU-Ring 178-319-8-1 UAT-40, 50, 60 & 70 Anvil Sleeve for Installation of SU-Ring 194-319-3-1 UAT-90 Anvil Sleeve for Installation of SU-Ring 178-350-9-1 UAT-40D, 50D & 60D Repairing With the PTRF Disassembly and Reassembly of Liner Casing Setter PTRF-039 UAT-40, 50, 60 & 70 Disassembly and Reassembly of Liner Casing Setter PTRF-040 used with the PTRF-039 UAT-90 Disassembly and Reassembly of Liner Casing Setter PTRF-041 used with the PTRF-039 UAT-100 Disassembly and Reassembly of Liner Casing Setter PTRF-042 used with the PTRF-039 UAT-30D Disassembly and Reassembly of Liner Casing Setter PTRF-044 used with the PTRF-039 UAT-130 Repairing Without the PTRF Stand to Hold the Pulse Unit 144-905-0-3 UAT-30D Stand to Hold the Pulse Unit 145-905-6-3 UAT-40, 50 & 60 Stand to Hold the Pulse Unit 194-905-0-3 UAT-70 Stand to Hold the Pulse Unit 194-905-3-3 UAT-80 Stand to Hold the Pulse Unit 147-905-8-3 UAT-90 Stand to Hold the Pulse Unit 148-905-2-3 UAT-100 Stand to Hold the Pulse Unit 194-905-4-3 UAT-130 Stand to Hold the Pulse Unit 194-905-8-3 UAT-200 Disassembly and Reassembly of Liner Casing Setter 144-906-0-5 UAT-30D Disassembly and Reassembly of Liner Casing Setter 147-906-2-5 UAT-40, 50 & 60 Disassembly and Reassembly of Liner Casing Setter 147-906-6-5 UAT-70 Disassembly and Reassembly of Liner Casing Setter 147-906-3-5 UAT-80 Disassembly and Reassembly of Liner Casing Setter 147-906-8-5 UAT-90 Disassembly and Reassembly of Liner Casing Setter 148-906-2-5 UAT-100 Disassembly and Reassembly of Liner Casing Setter 130-906-2-5 UAT-130 Disassembly and Reassembly of Liner Casing Setter 18H-906-3-5 UAT-200 Press Bar for Rear Liner Plate 197-901-7-9 UAT-30D Press Bar for Rear Liner Plate 196-901-4-9 UAT-40, 50 & 60 Press Bar for Rear Liner Plate 190-901-6-9 UAT-70 Press Bar for Rear Liner Plate 143-901-9-9 UAT-80 & 90 Press Bar for Rear Liner Plate 194-901-2-9 UAT-100 Press Bar for Rear Liner Plate 194-901-6-9 UAT-130 Press Bar for Rear Liner Plate 194-901-8-9 UAT-200
– 6 –
Disassembly and Reassembly of the Pulse Unit
Disassembly
1. Remove the Front Casing (left-hand thread) from the tool.
2. Remove the Purple Cushion from the Pulse Unit and the Pulse Unit from the Handle. Be sure not to lose the
Adjustment Spacer, Spring, and/or Operating Rod that are between the Handle and Pulse Unit.
3. Remove the Oil Fill Plug and extract all of the oil with the VCE-1-1 from the Pulse Unit. Note: The Oil Fill
Plug on the UAT-30D is in the Rear Liner Plate.
4. Place the Pulse Unit in the PTRF-1-1 or the Stand for Holding Pulse Unit and remove the Liner Casing Setter
using the PTRF-039, PTRF-040, PTRF-041, PTRF-042 or Disassembly and Assembly of Liner Casing Setter
(right-hand thread).
5. While holding the Pulse Unit with the Anvil up, tap on the Anvil with a Dead Blow Hammer to remove the
Rear Liner Plate, Anvil, Driving Blades, Driving Blade Rollers, Relief Valve Spring, Relief Valve Ball,
Check Valve Spring, and Check Valve Ball. Now remove the Piston from the Rear Liner Plate.
6. Remove the Front Liner Plate and Liner from the Liner Casing. You can use the Anvil with a set of V-Blocks
on the Arbor Press by placing the Anvil driver end-first through the Front Liner Plate and pressing on the back
of the Anvil to push the Front Liner Plate and Liner out of the Liner Casing. Note: Always make sure that the
Front Liner Plate and Liner come out of the Liner Casing as one piece or you may cause serious damage to the
Liner Casing. Never push too hard on the Arbor Press. Always push the Front Liner Plate and Liner back and
forth in the Liner Casing until the Front Liner Plate and Liner move freely from the Liner Casing.
7. Separate the Front Liner Plate and Liner. Note: On the UAT-30D, 40, 50 & 60 series tools, the Front Liner
Plate is made up of two pieces: the Front Liner Plate and the Liner Casing Spacer.
8. Remove the Relief Valve Spindle (left-hand thread), Relief Valve Pin, Relief Valve, Pressure Valve Body,
Pressure Valve Spring, Pressure Valve Spring Collar, and Locator Pins from the Liner.
9. Remove all O-rings and Supporter Rings. Clean and inspect all parts. Resurface only those parts having burs
on them. If any parts show deep grooving or surface wear, they will need to be replaced.
– 7 –
Disassembly and Reassembly of the Pulse Unit (cont.)
Assembly
1. You will find all O-rings, Supporter Rings, and Springs needed for rebuild of the Pulse Unit in a Pulse Unit
Repair Kit (PRK). To order a PRK, you would order the model number of tool plus dash PRK (i.e., UAT-70-
PRK).
2. Lubricate all O-rings with Pulstar Oil.
3. Install the O-ring on the Relief Valve using the O-ring Install Fixture and install the Relief Valve into the
Liner lining up the slot in the Relief Valve with the hole in the Liner and install the Relief Valve Pin. Note:
Be careful not to cut the O-ring on the Relief Valve.
4. Install the Pressure Valve Spring Collar, Pressure Valve Spring and Pressure Value Body into Liner. Note:
Small end of spring goes towards the Pressure Valve Body.
5. Install the Relief Valve Spindle into the Relief Valve and install the O-ring on the Relief Valve Spindle
(left-hand thread) and Supporter Ring into the Front Liner Plate. Note: The Supporter Ring is not used on
the UAT-40, 50 & 60.
6. Install two Locator Pins into the front of the Liner.
7. Install the Anvil SU-ring and Supporter Ring into the Front Liner Plate and install the Front Liner Plate onto
the Liner. Note: Make sure that you work the Relief Valve Spindle O-ring up into the Front Liner Plate by
turning the Relief Valve Spindle back and forth. Note: On the UAT-30D, 40, 50 & 60 series, you install the
Liner Casing Spacer onto the Liner. Install the Front Liner Plate after the Anvil and Driving Blades have
been installed into the Liner.
8. Install the Driving Blade Springs, Driving Blades, and Driving Blade Rollers into the Anvil and into the
Driving Blade Install Fixture.
9. Put the proper Anvil Sleeve Fixture over the drive end of the Anvil and install the Anvil into the Liner and
through the Front Liner Plate removing the Driving Blade Install Fixture. As you do this, make sure to keep
the Nylon piece of the Driving Blade Install Fixture tight against the Anvil.
10. Install two Locator Pins into the rear of the Liner, the Check Valve Spring and Check Valve Ball into the
back of the Anvil and the Relief Valve Ball and Relief Valve Spring into the back of the Relief Valve in the
Liner.
11. Install the O-ring onto the Rear Liner Plate and install the Rear Liner Plate onto the Liner. Note: If the
Check Valve Cover was removed from the Rear Liner Plate when reinstalling the Check Valve Cover back
into the Rear Liner Plate, make sure that the hole in the side of the Check Valve Cover is 180 degrees out
from the hole inside of the Rear Liner Plate, and apply a light coat of Loctite 626 to the Check Valve Cover
before installing.
12. Holding the hex end of the Rear Liner Plate in a vise, install the Front Liner Plate O-ring and now install the
Liner Casing over the Anvil and onto the assembly.
13. Clean the threads on the Liner Casing and Liner Casing Setter with a degreaser or Isopropyl Alcohol. Put a
small amount of thread locker (i.e., Loctite 243) on the Liner Casing Setter and install into Liner Casing.
Note: If you use Isopropyl Alcohol to clean the threads, it will cause the thread locker to set-up in about
10-15 minutes.
– 8 –
Disassembly and Reassembly of the Pulse Unit (cont.)
14. Now, using the PTRF-1-1 and following the Fill and Draw sheet, apply the proper amount, press load to the
Rear Liner Plate, and tighten the Liner Casing Setter to the proper torque. Note: Make sure that you use the
proper Press Cap when applying the press load to the Pulse Unit.
15. Once you are sure that the thread locker has set-up: Make sure that the Torque Adjuster is turned all the way
out counter-clockwise, fill the Rear Liner Plate with Pulstar oil, and insert the Piston stepped-end down into
the Rear Liner Plate. Put the Pulse Unit into the VC-101-2A Vacuum Fill Tank, making sure that the Pulstar
oil is about one-half of an inch below the oil fill hole on the Pulse Unit. Note: The UAT-30D goes into the
Tank Anvil-side down.
16. Now, cycle the Vacuum Fill Tank. Note: The gauge on the tank should read 29 in.Hg. or above.
17. Now, pull the Pulse Unit out of the Vacuum Fill Tank. Tip the Pulse Unit on its side to remove the excess
oil from the top of the Pulse Unit so that it is level with the top of the oil fill hole. Following the Fill &
Draw sheet, remove the recommended cc’s of oil from the Pulse Unit and install the Oil Fill Plug. Note:
Make sure that you pull up lightly on the plunger of the syringe as you put the needle into the Pulse Unit.
This will keep you from displacing the oil out of the Pulse Unit when you put the needle into the Pulse Unit.
18. Install the Purple Cushion onto the front of the Pulse Unit. Make sure that the Adjusting Spacer, Spring, and
Operating Rod are back in the Handle and install the Pulse Unit and Casing onto the Handle.
Note: The torque for the Front Casing is 16-24 Nm for the UAT-30D ~ UAT-80, 25-38 Nm for the UAT-90
~ UAT-130, and 13-19 Nm for the bolts on the UAT-200. Apply Loctite 243 to threads on the Casing
Connector.
19. You are now ready to test the tool.
– 9 – Disassembly and Reassembly of the Pulse Unit (cont.) UAT-Pulse Unit Part Number Description Part Number Description 1 2 3 3A 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Liner Casing Front Liner Plate O-Ring Front Liner Plate Liner Casing Spacer Torque Adjuster O-Ring Torque Adjuster Supporter Ring Torque Adjuster Relief Valve Pin Relief Valve Relief Valve O-Ring Pressure Valve Relief Valve Spring Locator Pins Anvil Driving Blade Driving Blade Roller Oil Plug Oil Plug O-Ring 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Locator Pin Anvil Supporter Ring Anvil SU-Ring Pressure Value Body Pressure Value Pressure Value Spring Collar Liner Driving Blade Spring Check Valve Spring Check Valve Ball Check Valve Cover Rear Liner Plate Rear Liner Plate O-Ring Piston Piston O-Ring Liner Casing Setter
– 10 – Disassembly and Reassembly of the Air Motor Disassembly: 1. Remove the Casing (left-hand thread), Pulse Unit, Spacer, Spring, and Operating Rod from the Handle. 2. With the Casing Connector Fixture, remove the Casing Connector (left-hand thread) from the Handle. 3. Remove the Front Air Motor Plate, Rotor, Cylinder, Blades, Rear Air Motor Plate, O-ring, and Rear Plate Spacer from the Handle. 4. Remove the O-rings from inside of the Handle. 5. Remove the Bearings from the Front and Rear Air Motor Plates. The Bearing is a press fit into and over the Rotor on the Rear Air Motor Plate. 6. Clean and inspect all parts. Resurface only those parts having burs on them. If any parts show deep grooving or surface wear, they will need to be replaced. Assembly: 1. You will find all Bearings, O-rings, Blades, and Filter needed for rebuild of the Air Motor in an Air Motor Repair Kit (RK). To order an RK, you would order the model number of tool plus dash RK (i.e., UAT-70RK). 2. Coat one-third of the Bearings with a good quality grease (i.e., Chevron Moly Grease EP NLG1 2). 3. Press the Rear Plate Bearing into the Rear Plate and over the Rotor at the same time. Note: You should not be able to see any light between the Rear Plate and the Rotor and the Rotor should turn freely when you have it set right. 4. Put a light coat of air motor oil on the Blades and install them in the Rotor. 5. Put the Cylinder down over the Rotor and onto the Rear Plate with exhaust holes up. 6. Press the Front Plate Bearing into the Front Plate and install the Front Plate onto the Cylinder and Rotor. 7. Install the O-ring and Rear Plate Spacer onto the Rear Air Motor Plate. 8. Lightly oil the O-rings and install them into the Handle. 9. Line up the pin on the side of the Front Plate with the cut-out on the inside of the Handle and install the Air Motor into the Handle. 10. Install the Casing Connector into the Handle. The recommended torque for the UAT-30 - 80 is 45 Nm +/-5, for the UAT-90 is 50 Nm +/-5, and for the UAT-100 and UAT-130 it is Nm 60 +/-5. Make sure to use a good service removable thread locker on the Casing Connector. 11. Install the Operating Rod, Spring, Adjusting Spacer, Pulse Unit, and Casing on the Handle. Make sure to use a good service removable thread locker on the Casing Connector. Note: The torque for the Front Casing is 16-24 Nm for the UAT-30D ~ UAT-80, 25-38 Nm for the UAT-90 ~ UAT-130, and 13-19 Nm for the bolts on the UAT-200. Apply Loctite 243 to threads on the Casing Connector. 12. The tool is ready to test.