Aimco UAT Series Operating instructions

PO Box 16460, Portland, OR 97292-0460 ⚫503-254-6600 ⚫Fax [phone]
UAT Series
Repair Manual

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.

–11 –
Disassembly and Reassembly of the Air Motor (cont.)
UAT- Air Motor
Part
Number
Description
Part
Number
Description
1
2
3
4
5
6
7
8
9
Casing Connector
Piston Reset Spring
Front Air Motor Bearing
Nylon Ball Plug
Roll Pin
Blade
Roll Pin
Air Motor Cylinder
Roll Pin
10
11
12
13
14
15
16
17
Rear Air Motor Plate
Rear Air Motor Bearing
O-Ring
Rear Plate Spacer
Front Air Motor Plate
Rotor
Handle O-ring
Handle

–12 –
Disassembly and Reassembly of the Shut-off Valve Section
Disassembly:
1. Remove the Valve Cover using the Valve Cover Fixture (right-hand thread) from the back of the Handle.
2. Remove the Supporter Ring, Cushion Spacer, Shut-off Valve, Supporter Ring, Shut-off Valve Spring, and
Ball from the Handle.
3. Remove the Valve Plug from the side of the Handle and remove the Shut-off Valve Bushing from inside of
the Handle.
4. Clean and inspect all parts. Replace all worn or damaged parts.
Assembly:
1. Lightly lubricate all O-rings and install on Shut-off Valve Bushing.
2. Install the Shut-off Valve Bushing into the Handle. Make sure to line up the hole in the side of the Shut-off
Valve Bushing with the hole on the side of the Handle.
3. Install the Valve Plug snugly into place, making sure not to over-tighten the Valve Plug or you could
damage the O-ring and the tool will not shut-off. Note: The Valve Plug should be torqued to 1.0-1.5 Nm.
4. Install the Ball, Spring, Supporter Ring, Shut-off Valve, Cushion Spacer, Supporter Ring, and Valve Cover.
Note: The Valve Cover should be torqued to 20-30 Nm for the UAT-30D ~ UAT-80 and 30-40 Nm for the
UAT-90 ~ UAT-200.
5. You are ready to test the tool.

–13 –
Disassembly and Reassembly of the Shut-off Valve Section (cont.)
UAT-Shut-off Valve
Part
Number
Description
Part
Number
Description
1
2
3
4
5
6
7
8
Valve Plug
Handle
O-Ring
Shut-off Valve Spring
Supporter Ring
O-Ring
O-Ring
Shut-off Valve Bushing
9
10
11
12
13
14
15
O-Ring
Supporter Ring
Cushion Spacer
Operating Rod
Shut-off Valve Ball
Shut-off Valve
Valve Cover

–14 –
UAT Series Fill & Draw Sheet
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
UAT-30D(SD)
5.0
0.19+/-.01
85+/-5
63+/-4
1
20/27
UAT-40(S)(D), UAT-50(S)(D)
5.6
0.26+/-.01
85+/-5
63+/-4
1
20/27
UAT-60(S)(D)
6.2
0.35+/-.01
85+/-5
63+/-4
1
20/27
UAT-70(S)
8.8
0.60+/-.05
110+/-5
81+/-4
2
40/54
UAT-80
12.0
0.80+/-.05
135+/-5
100+/-4
2
40/54
UAT-90
14.0
0.90+/-.05
150+/-5
110+/-4
3
60/81
UAT-100
21.5
1.40+/-0.1
185+/-10
137+/-7
3
60/81
UAT-130
24.0
1.40+/-0.1
185+/-10
137+/-7
3
60/81
UAT-150
31.5
2.0+/-0.1
290+/-10
214+/-7
4.5
90/122
UAT-180
39.0
3.8+/-0.1
320+/-10
236+/-7
4.5
90/122
UAT-200
81.5
5.60+/-0.1
320+/-10
236+/-7
4.5
90/122

–15 –
UAT Series Troubleshooting
Troubleshooting
TROUBLE CAUSE SOLUTION
No Shut-off
Low Air Pressure
Makesurethat you have 85 PSI
at the tool while running the tool.
LowOil in the Pulse Unit
Add .10cc of oil and/or re-tank the
Pulse Unit.
Air Motor Dry; No Lubrication
Lubricate the Air Motor.
Loss of Power in the Air Motor
Reset the Air Motor.
Premature Shut-off
Shut-off Valve Ball Pushed into
Spring
Reset the Ball in the Shut-off
Valve Bushing.
Too Much Oil in the Pulse
Remove .10cc of oil from the
Pulse Unit.
Spring between the Pulse Unit
and the Air Motor Weak or
Missing
Replace Spring with new one or
with a stronger one.
Spacer between the PulseUnit
andthe Air Motor Missing
Replace the Spacer. The Pulse
Unit should onlymove .20mm in
the Casing.
Too Much Air Pressure
Air Pressure should be 85 PSI
Dynamic.
Low Torque
Air Motor Dry; No Lubrication
Lubricate the Air Motor.
Loss of Power in the Air Motor
Reset the Air Motor.
Spring between the Pulse Unit
and the Air Motor Weak or
Missing
Replace Spring with new one or
with a stronger one.
LowOil in the Pulse Unit
Add .10cc of oil and/or re-tank the
Pulse Unit.
Low RPM’s
Exhaust Filter Dirty
Replace the Filter in the Silencer.
Air Motor Dry; No Lubrication
Lubricate the Air Motor.
Loss of Power in the Air Motor
Reset the Air Motor.
Recommended Preventative Maintenance:
It is recommended that after every 200,000 pulsing seconds or 180 days, the fluid in the tool’s pulse unit be
changed. At such time, it is also recommended to grease the bearings in the air motor. If the presence of water is
noted, it is recommended that a small amount of oil be run through the air motor to wash out any rust residue in
the air motor.
It is also recommended that after every 400,000 pulsing seconds or 365 days, that a Pulse Unit Repair Kit be
installed in the pulse unit. This also allows the inspection of hard parts in the pulse unit.

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