Central Pneumatic 93216 User manual

R
52 Pcs Air Tool Kit
(Impact Wrench / Die Grinder Set)
3491 Mission Oaks Blvd. / Camarillo, CA 93011
Copyright © 2005 by Harbor Freight Tools®. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in any
shape or form without the express written consent of Harbor Freight Tools.
For technical questions and replacement parts, please call 1-800-444-3353.
R
Assembly and Operating Instructions
93216
Due to continuing improvements, actual product may dlffer slightly from the product described herein.

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Page #2 SKU:93216
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1. Keep work area clean. Cluttered areas invite injuries.
2. Observe work area conditions. Do not use tools in damp, wet, or poorly lit locations.
Don’t expose to rain. Keep work area well lit. Do not use electrically powered air
compressors in the presence of flammable gases or liquids.
3. Keep children away. Children must never be allowed in the work area. Do not let them
handle machines, tools, or hoses. Keep others a safe distance from tool while tool is in
operation as accidental actuation may occur, possibly causing injury.
4. Store idle equipment. When not in use, tools must be locked up in a dry location to
inhibit rust. Always lock up tools and keep out of reach of children.
5. Do not force the tool. It will do the job better and more safely at the rate for which it
was intended. Do not use inappropriate attachments in an attempt to exceed the tool’s
capacities.
Air Die Grinder
Free Speed 22000 RPM
Avg. Air Consumption 3 CFM
Recommended Air Pressure 90 PSI
Air Inlet 1/4" NPT
Collet size 1/4"
Impact Wrench
Anvil Size 1/2"
Avg. Air Consumption 4 CFM
Recommended Air Pressure 90 PSI
Air Inlet 1/4" NPT
Free Speed 7,000 RPM
Sockets size 1/2", 9/16", 5/8", 3/4"
Maximum Torque 230 ft-lbs.
SPECIFICATIONS
SAVE THIS MANUAL
You will need the manual for the safety warnings and cautions, assembly instructions, operating
procedures, maintenance procedures, trouble shooting, parts list, and diagram. Keep your
invoice with this manual. Write the invoice number on the inside of the front cover. Keep
both this manual and your invoice in a safe, dry place for future reference.
SAFETY WARNING & CAUTIONS
WARNING: When using pneumatic equipment, basic safety precautions should always be
followed to reduce the risk of personal injury and hazards due to over pressurization. READ ALL
INSTRUCTIONS BEFORE USING THIS TOOL!
Utility Torque 20-150 Ft.Lbs.

Page #3 SKU:93216
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6. Use the right tool for the job. Do not attempt to force a small tool or attachment to do
the work of a larger industrial tool. Do not use a tool for a purpose for which it was not
intended.
7. Dress properly. Do not wear loose clothing or jewelry as they can be caught in moving parts.
Non-skid footwear is recommended. Wear restrictive hair covering to contain long hair.
8. Use eye and ear protection. Always wear ANSI-approved chemical splash goggles
when working with chemicals. Always wear ANSI-approved impact safety goggles at other
times. Wear a full face shield if you are producing metal filings or wood chips. Wear an
ANSI-approved dust mask or respirator when working around metal, wood, and chemical
dusts and mists. When operating for extended periods of time, use approved ear protection.
Safety goggles and ear protectors are available from Harbor Freight Tools.
9. Do not abuse the power cord. Do not yank compressor’s cord to disconnect it from the
receptacle. Do not carry tools by the cord.
10. Do not overreach. Keep proper footing and balance at all times. Do not reach over or
across running machines.
11. Maintain tools with care. Keep tools sharp and clean for better and safer performance.
Follow instructions for lubricating and changing accessories. Inspect compressor’s cord
periodically and, if damaged, have it repaired by an authorized technician. Inspect all
hoses for leaks prior to use. The handles must be kept clean, dry, and free from oil and
grease at all times.
12. Remove adjusting keys and wrenches. Make it a habit to check that keys and adjusting
wrenches are removed from the tool or machine work surface before plugging it in.
13. Avoid unintentional starting. Do not carry any tool with your finger on the trigger, whether
it is connected to the compressor or not.
14. Stay alert. Watch what you are doing; use common sense. Do not operate any tool when
you are tired.
15. Check damaged parts. Before using any tool, any part that appears damaged should
be carefully checked to determine that it will operate properly and perform its intended
function. Check for alignment and binding of moving parts; any broken parts or mounting
fixtures; and any other condition that may affect proper operation. Any part that is damaged
should be properly repaired or replaced by a qualified technician. Do not use the tool if any
switch does not turn on and off properly.
16. Replacement parts and accessories. When servicing, use only identical replacement
parts. Use of any other parts will void the warranty. Only use accessories intended for
use with this tool. Approved accessories are available from Harbor Freight Tools.
17. Do not operate tool if under the influence of alcohol or drugs. Read warning labels
on prescriptions to determine if your judgment or reflexes are impaired while
taking drugs. If there is any doubt, do not operate the tool.

Page #4 SKU:93216
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18. Drain compressor every day. Do not allow moisture to build up inside the compressor.
Do not allow compressor to sit pressurized for longer than one hour.
19. Make sure all equipment is rated to the appropriate capacity. Make sure that the
regulator is set at least 10 PSI lower than the lowest rated piece of equipment
you are using.
20. Do not use oxygen, combustible gases, or bottled gases as a power source.
The tool may explode, possibly causing injury.
21. Do not exceed the recommended air pressure of 90 PSI.
22. Tool must not hold pressure when air supply is disconnected. If a wrong fitting
is used, the tool can remain charged with air after disconnecting and thus will
be able to cycle after the air line is disconnected possibly causing injury.
23. Always disconnect air supply: Before making adjustments, when servicing the tool,
when clearing a jam, when tool is not in use, or when moving to a different work area,
as accidental actuation may occur, possibly causing injury.
24. Disconnect power. Unplug compressor when not in use.
25. Outdoor extensions cords. When the equipment is operated outdoors, use only extension
cords intended for outside use. See chart under “Extension Cords” for the proper
AWG rating depending on the length of the cord(s) being used.
26. Do not abuse the power cord. Do not yank it to disconnect it from the receptacle.
Do not carry tools by the cord.
27. Guard against electric shock. Prevent body contact with grounded surfaces such
as pipes, radiators, ranges, and refrigerator enclosures.

Page #5 SKU:93216
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Your risk from these exposures varies, depending on how often you do this type of
work. To reduce your exposure to these chemicals: work in a well ventilated area,
and work with approved safety equipment, such as those dust masks that are specially
designed to filter out microscopic particles. (California Health & Safety Code §
25249.5,
et seq. )
7.
WARNING!Thewarnings,precautions,andinstructions discussedinthis manual
cannot cover all possible conditions and situations that may occur. The operator
must understand that common sense and caution are factors which cannot be built
into this product, but must be supplied by the operator.
SPECIFIC SAFETY RULES
1. Maintain labels and nameplates on the air tools. These carry important
information. If unreadable or missing, contact Harbor Freight Tools for a replacement.
2. Use clean, dry, regulated, compressed air at 90 PSI. Do not exceed the
recommended 90 PSI. Never use oxygen, carbon dioxide, combustible gases, or
any other bottled gas as a power source for this tool.
3. When connecting to the air supply: Prior to each use, if an automatic oiler is not
used, add two drops of air tool oil into the inlet bushing of the Die Grinder / Impact
Wrench.
4. Use appr
5. For impact wrench, only use impact sockets.
opriate accessories only. ONLY use accessories with a 1/4” shank
long enough to fit securely into the collet and that are rated at 22,000 RPM or
greater. Other accessories may come loose, or break and fly apart causing severe
personal injury.
6. WARNING! Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities, contain chemicals known (to the State of California) to
cause cancer, birth defects or other reproductive harm. Some examples of these
chemicals are: lead from lead-based paints, crystalline silica from bricks and cement
or other masonry products, arsenic and chromium from chemically treated lumber.

Page #6 SKU:93216
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GROUNDING INSTRUCTIONS
If compressor has a three-prong plug
1. If the compressor has a three-prong plug, the third prong (round) is the ground. Plug the
machine’s cord only into three-prong receptacles. Never cut off the round prong. Cutting off
the ground will result in a safety hazard and void the warranty.
2. If a three-prong receptacle is not available, you may use an adapter. Extending from the male
end of the adapter, you will find a ring connector or wire lead with a ring connector where the
ground (round prong) would be. Remove the center screw of the outlet cover and put the
screw through the ring connector and back into the hole of the outlet cover. Do not over-
tighten or you will crack the outlet cover.
If compressor has a two-prong plug
If the compressor has a polarized plug, one prong is wider than the other prong. This plug will fit in
polarized outlet only one way. If the plug does not fit fully in the outlet reverse the plug. If it still
does not fit, contact a qualified electrician to install the proper outlet. Do not attempt to modify
the plug in any way. Modifying the plug will result in a safety hazard and void the warranty.

Page #7 SKU:93216
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UNPACKING for 93216 52 Pcs Air Tool Kit Impact Wrench / Die Grinder Set
Description Q'ty
1/2" Air Impact Wrench 1
1/4" Air Die Grinder 1
1/2"*1/2" Sanding Drum 1
3/4"*1" Sanding Drum 1
1/8" Shank Grinding Stone 5
1/4" Shank Grinding Stone 5
Spanner 2
Head Tire Chuck 1
1/8" Collet 1
Quick Connect Female Coupler 1
Ball Foot Tire Gauge 1
1/2" to 3" EXT.BAR 1
Blow Gun 1
4mm Allen Wrench 1
1/2" Impact Socket 1
9/16" Impact Socket 1
3/4" Impact Socket 1
5/8" Impact Sockets 1
Sport Needle 1
1/4" to 1/4" NPT Female Hose Connector 1
1/4" to 1/4" NPT Male Hose Connector 1
Rubber Nozzle 1
Tapered Nozzle 1
High Pressure Nozzle 1
Needle Adaptor 1
Safety Nozzle 1
Teflon Tape 1
Quick Connector 4
Air Tool Oil 1
1/2"*1/2" Sanding Roll 5
3/4"*1" Sanding Roll 5
Blow Mold Case 1
UNPACKING
When unpacking, check to make sure the following parts are included. All sizes listed below are
approximate. If any parts are missing or broken, please call Harbor Freight Tools at the number
on the cover of this manual.
Impact Wrench
This Impact Wrench develops a maximum of 230 ft/lbs. of torque. The amount of torque can be
increased or decreased using the AIR REGULATOR (12). When the Air Regulator is completely
screwed in it is at it’s lowest setting. Air pressure increases as you loosen the Air Regulator.

Page #8 SKU:93216
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Air
Tool
OPERATION
Setup
Frequent, but not excessive, lubrication is required for best performance. Oil added through the
airline connection will lubricate internal parts. An automatic airline oiler is recommended but oil
may be added manually before every operation or after about 1 hour of continuous use. Only a
few drops of oil at a time are necessary. Too much oil will collect inside the tool and be blown
out during the exhaust cycle. ONLY USE PNEUMATIC TOOL OIL. Do not use detergent oil or
additives as these lubricants will cause accelerated wear to the seals in the tool.
Dirt and water in the air supply are major causes of pneumatic tool wear. Use a filter/oiler for
better performance and longer life. The filter must have adequate flow capacity for the specific
application. Consult the manufacturer’s instructions for proper maintenance of your filter.
The connector on the tool must not hold pressure when the air supply is disconnected. If the
wrong fitting is used, the tool can remain charged with air after being disconnected and still be
able to drive a fastener. See Figure 1 for the recommended accessories and connection order.
Figure 1 — Airline Oiler Assembly

Page #9 SKU:93216
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Impact Wrench Operation
Step 1: Set the compressor’s pressure regulator to a maximum of 90 PSI. 90 PSI is satisfac-
tory without harming this tool.
Step 2: Remove the plastic cap from the rear of the HOSE ADAPTER (10).
Step 3: Wrap the threads of the Air Coupler with teflon tape. Attach the Air Coupler
to the HOSE ADAPTER. Tighten the fitting.
Step 4: Determine the socket size necessary for the job you need to do. Attach the appropriate
1/2” drive socket to the Impact Wrench as shown in Figure 7.
Figure 7 — Attaching the Air Coupler and Socket
Step 5: Connect the Impact Wrench to the air compressor’s hose. If leaking is detected,
disconnect the air hose and repair before use.

Page #10 SKU:93216
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Step 6: Select the power setting for Loosening by pushing in and turning the AIR REGULATOR
(12) located on the bottom of the Impact
Wrench as shown in Figure 8.
When the Air Regulator is completely
screwed in it is at it’s lowest setting.
Air pressure increases as you push in
and turn the Air Regulator.
Figure 8 — Adjusting the Reverse Power Setting
Step 7: Select the direction of the Wrench (forward or reverse) by pushing the REVERSE
VALVE (3) located on the handle of the Impact Wrench as shown in Figure 9.
Figure 9 — Selecting Reverse Direction
C AUTION
Use the Setting Appropriate for the
Job. Do Not Set the Power Setting
Higher Than Needed. Damage to
Parts Could Result.
(12)
(3)

Page #11 SKU:93216
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Step 8: Press the TRIGGER (4) to test the Impact Wrench. The Impact Wrench should spin
freely as shown if Figure 10.
Figure 10 — Pressing Trigger
Loosening
Step 1: Verify that the power level is correct for your needs and that the REVERSE VALVE
(3) has been shifted (pressed) completely to the right. If not, refer to Steps 6 through
7 under Impact Wrench Operation before proceeding.
Step 2: Place your work in as clear a location as possible. Make sure the air hose will reach as
far as needed without stressing any connections.
Step 3: With the correct socket attached to the Impact Wrench, slide the socket over the nut or
bolt.
Step 4: Grip the Impact Wrench with both hands, especially with higher power settings. Make
sure you are in a stable position and spread your feet shoulder-width apart.
Step 5: Press the TRIGGER (4) to loosen the bolt.
Step 6: If the bolt will not loosen, and you are on a
low power setting for Loosening, try increas-
ing the power setting and attempt again.
Step 7: If the bolt will not loosen with the Impact
Wrench on a higher power setting, do not repeat attempts to loosen. You may snap
the bolt or strip the threads of the stud or nut. Try another method to loosen the bolt or
nut.
WARNING
The Impact Wrench May Kick Back
During Operation. If This
Happens, Release the TRIGGER
IMMEDIATELY!
(4)

Page #12 SKU:93216
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Refer to OPERATIONS Setup for information on maintaining your tool.
Wipe down your tool after every use and store it in a drawer or other safe place.
Warning! Always make sure the impact wrench is disconnected from its compressed air supply
before performing any inspection, adjustments, maintenance, or cleaning.
Before each use, inspect the general condition of the impact wrench, check for loose screws,
misalignment or binding of moving parts, cracked or broken parts, damaged air hose, and any
other condition, that may affect its safe operation, if abnormal noise or vibration occurs, have
the problem corrected before further use.
Tightening
Step 1: Verify that the power level is correct for your needs and that the REVERSE VALVE
(3) has been shifted (pressed) completely to the left. If not, refer to Steps 6 through 7
under Impact Wrench Operation before proceeding.
Step 2: Place your work in as clear a location as possible. Make sure the air hose will reach as
far as needed without stressing any connections.
Step 3: Thread the nut or bolt on as far as possible by hand. This is to prevent cross-thread-
ing.
Step 4: If you have torque specs for the nut or bolt you are working on, refer to them. If a low
torque setting is given, it is recommended that you use a socket wrench or a manual
torque wrench to tighten as the Impact Wrench may provide too much torque, even in
the lowest power setting.
Step 5: Place the socket onto the nut or bolt.
Step 6: Grip the Impact Wrench with both hands, especially with higher power settings. Make
sure you are in a stable position and spread your feet shoulder-width apart.
Step 7: Press the TRIGGER to tighten the bolt.
Step 8: When the bolt is tight, release the TRIGGER. DO NOT OVER TIGHTEN!
MAINTENANCE
There are no user-serviceable parts in your Impact Wrench. Service and repair of this tool
should only be done by a qualified service technican.

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Spindle
Wrench
(1A)
Collet
Wrench
(1B)
Die Grinder Operation:
1. WARNING! Always wear ANSI approved safety glasses, a full face shield,
and hearing protection when operating the Die Grinder.
ALWAYS detach the Air Supply line and squeeze theThrottle Lever (26) to verify
that the tool is incapable of operating before changing, installing, or adjusting
the tool or any accessories.
2. Turn the two Wrenches (1A,1B) provided against each other to
loosen the Collet (3), as shown to the right. Place the Spindle
Wrench (1A) on the flats of the Spindle (6) and the Collet
Wrench (1B) on the Collet (3). Turn them against one another
to loosen the Collet (3).
3. Insert the 1/4” diameter shank of an Accessory
fully into the Collet (3). Then, firmly retighten
the Collet (3) to lock the Accessory in place.
4. Connect the air supply hose to the Quick Connector
on the Die Grinder. Turn on the air compressor,
and set its regulator to the recommended 90 PSI for the Die Grinder.
Do not exceed 90 PSI for this item.
5. In order to keep the air supply hose out of the way, hang it over your shoulder.
6. IMPORTANT! Grip the Die Grinder firmly.
7. Slide the Safety Switch (26) back and slowly squeeze the Throttle Lever (26) until the
desired speed is obtained.
NOTE: The Die Grinder always turns the Accessory clockwise .
8. With a firm grip on the Die Grinder, lightly apply the Accessory to the workpiece,
slowly and steadily moving the Accessory to the right and left until you have achieved
the desired effect on the workpiece.
9. Once the work is complete, release the Throttle Lever (26).
10. Turn off the air compressor. Squeeze the Throttle Lever (26) to release any remaining
air pressure from the Die Grinder. Then, disconnect the air hose from the tool.
11. Remove the Accessory from the Die Grinder. Then, store the tool in a clean, dry
location out of reach of children.
Step
Step
Step
Step
Step
Step
Step
Step
Step
Step
Step

Page #14 SKU:93216
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MAINTENANCE
WARNING! Always make sure the Throttle Lever (26) is in its “OFF” position,
and disconnect the Die Grinder from its compressed air supply before
performing any inspection, adjustments, maintenance, or cleaning.
Before each use, inspect the general condition of the Die Grinder. Check for loose
screws, misalignment or binding of moving parts, cracked or broken parts, damaged
air hose, and any other condition that may affect its safe operation. If abnormal
noise or vibration occurs, have the problem corrected before further use.
Do not use damaged equipment.
Daily: With a clean cloth, remove all dirt, oil, and grease from the Die Grinder. If
necessary, you may use a mild detergent. Do not use solvents, as damage to the
Die Grinder may occur. Do not immerse the Die Grinder in any liquids.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY
DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR
DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT
HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS
QUALIFIED TO REPLACE ANY PARTS OF
THEPRODUCT.INFACT,THEMANUFACTURER AND/OR
DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE
UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER
ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL
PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION
OF REPLACEMENT PARTS THERETO.

Page #15 SKU:93216
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Page #15 SKU:93216
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(626ZZ)
(6000ZZ)
(2.5X 6)
2.2.55
(3X23)
(P12)
(P )
AIR DIE GRINDER (REAR EXHAUST)
a
b
* 3a Collet (6mm) - Qty 1
3b Collet (3mm) - Qty 1
*

Page #16 SKU:93216
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Hose Adapter
Air Regulator
Steel Ball 10
Reverse Valve
Valve Sleeve
Description
"O"Ring(P8)
Hammer Pin
Hammer Cage
Hammer Dog
Anvil Bushing
ScrewM5X0.8X8L
17 XP-AI-12-17
XP-AI-12-22
XP-AI-12-18
XP-AI-12-19
XP-AI-12-20
XP-AI-12-21
20
22
21
19
18
Drive Cam
Anvil
XP-AI-12-10
XP-ORP-0070
XP-ORP-0080
XP-AI-12-14
XP-AI-12-12
XP-AI-12-09
XP-SB-010
XP-AI-12-07
XP-AI-12-06
XP-SP-30140
XP-AI-12-04
XP-SS-0508A
14
15
16
12
13
10
8
9
7
5
6
4
Spring
"O"Ring(P7)
Valve Stem
Spring
Pin3X14
Bushing
Trigger
Parts No.
XP-AI-12-01
XP-AI-12-02
XP-AI-12-03
NO.
2
3
1Housing
2
Screw 3*8
39
1XP-SS-0308A
XP-SS-0808A
XP-AI-12-43
XP-AI-12-42
XP-AI-12-41
XP-SS-0508C
1
1
1
1
1
42
44
43
40
41
"O" Ring
Rubber
Screw M8*8
Screw M5*8
Anvil Collar And Seal
1
1
1
1
1
Protecting Rubber
Rear End Plate
Front End Plate
Screw M5*15
Ball Bearing6001ZZ
Exhaust Deflector
XP-AI-12-26
XP-AI-12-33
XP-AI-12-38
XP-AI-12-37
XP-SS-0515A
XP-WW-0005
XP-AI-12-34
XP-AI-12-32
XP-AI-12-31
XP-AI-12-27
XP-BB-6001A
XP-AI-12-29
XP-SP-30100
1
1
1
1
1
1
36
37
38
34
35
33
1
1
1
2
1
1
31
32
30
28
29
27
Rear Gasket
Washer ( 5)
Rear Cover
Pin3*10
Spring
Pin
XP-AI-12-24
XP-AI-12-25
Parts No.
QTY
1
1
1
NO.
25
26
24
Rotor
Cylinder
Rotor Blade
Description
6
4
1
1
1
4
1
1
1
1
2
1
1
QTY
1
1
1/2" SQ.DRIVE AIR IMPACT WRENCH