ASTRO ONYX THOR 1895 User manual

1 YEAR LIMITED WARRANTY
1895
1/2" THOR G2
IMPACT WRENCH
• Astro Pneumatic Tool Co. warrants our products to the original user against defective material or workmanship for a
period of 1 year from the date of 1st use. Astro reserves the right to determine whether the product failed because of
defective material, workmanship or other causes and to charge back for missing parts. Astro Pneumatic Tool Co., at its
discretion, will repair products covered under this warranty free of charge. The original user is to return the product
(with the exceptions listed below) with the distributor’s name, address, adequate proof of date of purchase or a copy of
warranty card, and a short note explaining the problem. Failures caused by accident, alteration, or misuse are not
covered by this warranty.
• Astro Pneumatic Tool Co. or its authorized service representatives must perform all warranty repairs. Any repair to the
product by unauthorized service representatives voids this warranty. The rights under this warranty are limited to the
original user and may not be transferred to subsequent owners.
• This warranty is in lieu of all other warranties, expressed or implied, including warranties of merchantability and fitness
for a particular purpose. Some states do not allow the exclusion of limitations of incidental or consequential damages
so the above limitations may not apply to you.
WARNING
Study, understand and follow all instructions provided with this product.
Read these instructions carefully before installing, operating, servicing or
repairing this tool. Keep these instructions in a safe accessible place.
PLEASE DO NOT RETURN ANY PRODUCT WITHOUT CALLING 1-800-221-9705 FOR INSTRUCTIONS
106

02
1/2" THOR G2 Impact Wrench1895
INTENDED USE OF THE TOOL
1895 is designed to be used with quality 1/2" drive impact sockets and attachments only. Do not use this
tool outside of the designed intent. Never modify the tool for any other purpose or use.
BEFORE USE
Before use, check the parts diagram and part number listing on page 5-6 to make sure all parts are
included. If any parts are missing or damaged, please call your distributor.
SPECIFICATIONS:
PRODUCT INFORMATION
CAUTION: TO HELP PREVENT PERSONAL INJURY.
• Use of this product can expose you to chemicals such as phthalates which are known to the State of
California to cause cancer, and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov/product. Always wear ANSI approved safety equipment, safety glasses
and clothing when using this product.
Study, understand, and follow all instructions provided with this product. Failure to read and follow
all warnings and operating instructions may result in damages and serious injury or death.
• Always wear ANSI approved goggles when using this product. (Users and Bystanders).
• Never use this tool for any application other than for which it was designed.
• Only use accessories designed for this tool.
• Never alter or modify this tool in any way.
• Improper operation and/or maintenance of the tool, modification of the tool, or use of the tool with
accessories not designed for it could result in serious injury or death.
• Always select the correct accessories of the correct size and design for the job that you are
attempting to perform.
• Always work in a clean, safe, well-lit, organized and adequately equipped area.
• Do not begin repairs without assurance that vehicle is in secure position, and will not move during repair.
• In order to reduce their exposure to such chemicals, users should always:
- work in well-ventilated areas.
WARNING
- wear appropriate safety equipment and clothes that are
specifically designed to filter out microscopic particles.
Max Torque:
Free Speed:
Weight:
Length:
1,020 ft-lbs
(compare to 1650 nut-busting)
6500 rpm
5.03 lb (2.28 Kg)
6.85"
6.8 cfm
92/103 dBA
3/8" NPT(1/4" NPT adapter included)
3/8" w/ HI-FLOW fittings
Air Consumption:
Sound Pressure:
Air Inlet:
Min. Hose Size:
• Generation 2 THOR designed to be the highest performing 1/2" impact wrench on the market.
• Maintains a short length like the original Astro THOR impact wrench but with several improvements.
• Rated 1,020 ft-lbs traditional Max Torque (compare to 1650 nut-busting) thanks to a larger motor and
greatly increased air passageways in the handle and trigger feeding it.
• New linear trigger allows for more throttle adjustment and feathering compared to
previous 2-stage trigger.
• New slightly widened THOR hammer texture handle with top hump flattened for a more comfortable
grip, and roll-pin hole removed for less air leak opportunities.
• Includes power adjustment wheel and improved FWD/REV rocking lever. For use with 3/8" or
1/4" NPT HI-FLO fittings (adapter for 1/4" included), 6.8 CFM continuous use.

• The tool shall not be used in potentially explosive atmospheres.
• Disconnect the air hose before changing or adjusting any inserted tools.
• Before using tool, please confirm all couplings and plugs are fixed securely. An air hose that is under
pressure may lash out when disconnected and could lead to serious injuries.
• Prevent loose clothes, long hair or any other personal accessories from coming close to moving
parts to reduce the risk of being caught, trapped or drawn into the rotating spindle.
• Excessive high air pressure that exceeds the maximum pressure may cause injuries to user.
• Exposure to strong vibration for extended time may cause harm to operator.
• Be aware of the rotation direction before starting the tool to reduce hazardous situations due to
unexpected rotation direction.
• WATCH YOUR STEP! Leaving excess hose unattended near working area or walk path could
result in injury or death.
• Wearing eye/face protection could reduce the danger to person from high speed splinters being
emitted from the tool or work surface.
• Wearing correct breathing protection will help avoid inhaling dust or debris from work process that
can be harmful to your health.
• High sound levels can cause permanent hearing loss. Use hearing protection while operating tool.
• Due to the material being processed, there may be a risk of explosion or fire. Be aware of work
surface dangers prior to beginning work.
• There is a risk of being cut due to high speed rotation. Do not touch high speed rotating disc.
• This power tool is not insulated. If contact is made with an electric current, injury may occur.
• Dust created by sanding, sawing, grinding, drilling and other related activities may expose the user to
dust and/or microscopic particles that may contain chemicals known to the State of California to
cause cancer, birth defects or other reproductive harm.
03
1/2" THOR G2 Impact Wrench1895
MAINTENANCE INSTRUCTION
LUBRICATION:
Before connection of the hose, apply 4 to 5 drops
of a good quality air tool oil at the air inlet.
After 3 to 4 hours of operation, oiling may be
necessary again.
TIGHTNESS OF PARTS:
Regularly check whether all connection parts are
fastened securely. Follow this procedure daily
before beginning work.
DISPOSAL:
Follow national legislation of waste disposal.
STORAGE:
Avoid storing the tool in a location subject to high
humidity. If the tool is left unused, the residual
moisture inside the tool can cause rust. Before
storing and after operation, oil the tool at the air
inlet with a good quality air tool oil and run it for a
short period.
ORDERING SERVICE PART:
For further operational and handling information
or for replacement of parts and components,
contact the sales agent from where you purchased
the tool, or the service division of our company,
phone number 800-221-9705.
* When ordering parts and components, give
each part number, name, and quantities.
WARNING

Pitch Pipe Back
Toward Air Receiver
Oil and Water Extractor should be at least 25 ft. from the compressor.
Further if possible.
Oil and Water
Extractor
PIPE SIZE, I.D. (Inches)
04
1/2" THOR G2 Impact Wrench1895
SUGGESTED AIR LINE CONNECTION
The oil and water extractor should not be mounted on or near the air compressor.
The temperature of air is greatly increased during compression. As the air cools down to room
temperature, in the air line, on its way to the Air Power Tool, the moisture contained in it condenses.
Thus, for maximum effectiveness, the oil and water extractor should be mounted at some point in the
air supply system where the temperature of the compressed air in the line is likely to be lowest.
Air lines must be properly drained daily. Each low point in an air line acts as a water trap. Such points
should be fitted with an easily accessible drain. See diagram below. Pitch all air lines back towards the
compressor so that condensed moisture will flow back into the air receiver where it can be drained off.
Drain daily.
Install Drain
at Each Low Point
COMPRESSOR UNIT
Drain Daily
Drain Daily
Drain Daily
25 FEET OR MORE
Air Flow
(CFM)
10
20
30
40
50
70
50
1/2"
3/4"
3/4"
1"
1"
1"
100
3/4"
3/4"
3/4"
1"
1"
1"
150
3/4"
3/4"
1"
1"
1"
1-1/4"
200
3/4"
1"
1"
1"
1-1/4"
Length of Pipe (feet)

Call 1.800.221.9705 for questions concerning performance of the product or other inquiries.
05
1/2" THOR G2 Impact Wrench1895
33
32
30
29
28
27
26
25
24
23
22
12
11
8
7
6
10
15
16 17
19
18
20
21
12A 2B
2C
3
5
4
31
39
34
35
36
14
37
38
13
17
PARTS BREAKDOWN
INSTRUCTIONS
1- High
2- Higher
3- Thor, God of Thunder
3 power selection settings
3/8" NPT inlet
1/4" NPT adapter included if
HI-FLOW 1/4" fittings are used
Push back and forth to
select FWD or REV

Call 1.800.221.9705 for questions concerning performance of the product or other inquiries.
06
1/2" THOR G2 Impact Wrench1895
PARTS LIST
1
1A
1B
1C
2
2A
2B
2C
3
4
5
6
7
8
10
11
12
12A
12B
13
14
15
16
17
18
19
20
21
22
1894-60
1895-2
1894-41
1894-40
1894-38
1894-36
1894-37
1895-6
1894-13
1894-12
1894-4
1894-31
1895-12
1895-13
1895-14
1895-15
1894-50
1894-49
1894-48
1894-47
1895-20
1895-21
1895-22
Front Cover Kit
Grease Fitting
Front Cover
Anvil Bushing (1/2")
Anvil Kit (1/2")
Socket Retainer (1/2")
O-Ring (P7)
Anvil (1/2")
Hammer Pin
Hammer Cage
Hammer Dog
Gasket
Steel Ball (SD2.5)
Spring (D2.5*L6*W0.4)
Spring Pin (D2.5*L25)
Ball Bearing (6002ZZ)
Cylinder Ass'y
Cylinder
Pin (D3*L6.7)
Trigger
Spring Pin
O-Ring (w1*d4)
Spring (L16.6*D11.8*d6.4*w0.6)
Screw (M3*24UNF*L12)
Cover
Reverse Lever
Air Regulator
O-Ring
Rotor
Index Part No. QtyDescription
1
1
1
1
1
1
1
1
2
1
2
1
2
2
1
1
1
1
2
1
1
1
1
4
1
1
1
1
1
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
37A
37B
37C
37D
37E
37F
37G
37H
37I
37J
38
38A
38B
38C
39
1895-23
1894-25
1894-24
1894-23
1894-22
1894-21
1894-20
1894-19
1894-18
1895-32
1895-33
1895-34
1895-35
1895-36
1895-37
1895-38
1894-53
Rotor Blade
Spacer
Rear End Plate
Screw (M4*P0.7*L16)
Ball Bearing (6001ZZ)
Washer (M8)
Screw (M5*P0.8*L19.2)
Rubber Washer (D44*d37.8*T3.6)
O-Ring (w3.5*d15)
Housing
Screw
Valve Seat
Valve
Spring
Air Regulator Ass'y
Sleeve
O-Ring (w1.9*d18.8)
Air Regulator
O-Ring (w1.5*d12)
Thrust Washers (D23.4*d15.5*T0.5)
Steel Ball (SD2)
Ball Positioning Piece
Spring
Steel Ball (SD2.5)
Air Inlet Bushing
Exhaust Deflector Kit
Slice
Exhaust Deflector
Screw (M3*24UNF*L15)
3/8" to 1/4" NPT Reducer
Index Part No. QtyDescription
7
1
1
3
1
1
1
1
1
1
4
1
1
1
1
1
2
1
2
2
3
1
2
2
1
1
1
1
2
1