Central Pneumatic Impact Set 33567 Users Manual

IMPACT SET 33567 33567

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®

COMBO RATCHET/IMPACT SET

Assembly and Operating Instructions

®

3491 Mission Oaks Blvd. / Camarillo, CA 93011
Copyright © 1997 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.

REVISED 12/02

05/04

SPECIFICATIONS
RATCHET WRENCH
Average Air Consumption
Recommended Air Pressure
Air Inlet
Free Speed
Maximum Torque (ft. lbs.)
IMPACT WRENCH
Bolt Capacity
Speed
Air Inlet
Sockets
Maximum Torque (ft. lbs.)

—
4 CFM
90 PSI
¼” NPT
150 RPM
45
—
1/2"
7000 RPM
¼” NPT
7/16" – 1"
230

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!
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.
For technical questions, please call 1-800-444-3353.

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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.
For technical questions, please call 1-800-444-3353.

Page #3 -- SKU: 33567

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.

For technical questions, please call 1-800-444-3353.

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GROUNDING INSTRUCTIONS

If compressor has a three-prong plug
1. This machine 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 overtighten or you will crack the outlet cover.

If compressor has a two-prong plug
This machine 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 no 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.

For technical questions, please call 1-800-444-3353.

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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.
Item#
N/A
N/A
N/A
N/A

Description
3/8" Ratchet Wrench
1/2" Impact Wrench
3/8" to 1/2" Adapter
4mm Hex Wrench

Item#
N/A
N/A
N/A

Description
Impact Sockets (7/16" – 1")
Oil Pot
Air Coupler

ASSEMBLY

Your Air Ratchet comes completely assembled.
Air Connection for Ratchet
Step 1:

Remove the plastic cap from the rear of the CONNECTION HEAD (#2).

Step 2:

Wrap the threads of the Air Coupler with pipe thread seal tape (not included). Attach
the Air Coupler to the CONNECTION HEAD. Tighten the fitting.

Step 3:

Your Air Ratchet is ready for use.

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 (#11). When the Air Regulator is
completely screwed in it is at it’s lowest setting. Air pressure increases as you loosen the Air
Regulator.

For technical questions, please call 1-800-444-3353.

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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.

Air
Ratchet

Figure 1 — Airline Oiler Assembly

For technical questions, please call 1-800-444-3353.

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Air Ratchet Operation
Step 1: Select the appropriate socket for your needs.
Step 2: Attach the socket to the RATCHET ANVIL (#18) as shown in Figure 2.

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Air Inlet
Roll Pin
(#5)

Figure 2 — Attaching the Socket
Step 3: Set the compressor’s pressure regulator to 90 PSI. Do not set the compressor’s outlet
regulator over 90 PSI.
Step 4: Connect the Air Ratchet to the air compressor’s hose. If leaking is detected, disconnect the air hose and repair before use.

For technical questions, please call 1-800-444-3353.

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Loosening
Step 1: Check the direction of the drive by pressing the TRIGGER (#4) as shown in Figure 3.

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Figure 3 — Operating the Air Ratchet
Step 2: If the Air Ratchet is going counterclockwise (the correct direction to loosen), then
proceed to Step 4.
Step 3: To change the direction of the drive to loosen, turn the dial marked “R-F” clockwise as
shown in Figure 4.

Figure 4 — Changing Direction of the Drive
Step 4: Place the socket over the nut to loosen.
Step 5: Grip the Air Ratchet firmly. Press the TRIGGER to begin loosening.
Step 6: If the Air Ratchet cannot loosen the nut, DO NOT raise the outlet pressure of the air
compressor. Do not continue attempts to loosen with the Air Ratchet. Use appropriate
tools and methods to loosen the nut.
Step 7: When the nut is removed, stop the Air Ratchet by releasing the TRIGGER and remove
the Air Ratchet. Remove the nut from the socket if needed.
For technical questions, please call 1-800-444-3353.

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Tightening
Step 1: Check the direction of the drive by pressing the TRIGGER (#4) as shown in Figure 3.
Step 2: If the Air Ratchet is going clockwise (the correct direction to tighten), then proceed to
Step 4.
Step 3: To change the direction of the drive in order to tighten, turn the dial marked “R-F”
counterclockwise as shown in Figure 5

Figure 5 — Changing the Direction of the Drive
Step 4: Thread the nut on as far as you can by hand.
Step 5: Place the socket on the nut. To begin tightening the nut, press the TRIGGER.
Step 6: If the Air Ratchet stalls while tightening, do not continue attempts to tighten the nut
with the Air Ratchet. DO NOT raise the outlet pressure of the air compressor. Use the
appropriate tools and methods to tighten the nut.
Step 7: When the nut has been tightened, remove the Air Ratchet and socket.
Step 8: If available, check the recommended torque specification for the nut. You should use a
torque wrench to torque the nut after using the Air Ratchet.

For technical questions, please call 1-800-444-3353.

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MAINTENANCE
Your Air Ratchet is best operated with an Airline Oiler. If you are using the Air Tool without an
Airline Oiler, follow the steps below.
Step 1: Disconnect the Air Ratchet from the air hose.
Step 2: Apply a few drops of PNEUMATIC TOOL
OIL through the air inlet before each use,
or every hour if used continuously.

CAUTION
Do not use detergent oil or additives as
these lubricants will cause accelerated
wear to the seals in the tool.

Step 3: Apply a few drops of oil to the VALVE
(#6), location shown in Figure 6. Work
the TRIGGER a few times to lubricate.

Air Inlet

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Valve (#6)
(underneath trigger)

Figure 6 — Lubrication Points

For technical questions, please call 1-800-444-3353.

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Impact Wrench Operation
Step 1: Set the compressor’s pressure regulator to a maximum of 90 PSI. 90 PSI is satisfactory 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 pipe thread seal tape (not included). 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.

For technical questions, please call 1-800-444-3353.

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Step 6: Select the power setting for Loosening by pushing in and turning the AIR REGULATOR
(#11) located on the bottom of the
CAUTION
Impact Wrench as shown in Figure 8.
Use
the
Setting
Appropriate for the
When the AirRegulator is completely
Job. Do Not Set the Power Setting
screwed in it is at it’s lowest setting.
Higher Than Needed. Damage to
Air pressure increases as you push in
Parts Could Result.
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
For technical questions, please call 1-800-444-3353.

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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 increasing the power setting and attempt again.

WARNING
The Impact Wrench May Kick Back
During Operation. If This
Happens, Release the TRIGGER
IMMEDIATELY!

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.
For technical questions, please call 1-800-444-3353.

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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-threading.
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. Attempts to repair or make adjustments on your tool are prohibited and will VOID your warranty.
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.

WARRANTY
Air Tools covered under Central Pneumatic 1 year warranty.
Sockets covered under Pittsburgh Limited Lifetime warranty.

For technical questions, please call 1-800-444-3353.

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PARTS LIST – RATCHET WRENCH
Item#
1
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

Parts No.
HY150-01
HY150-02
HY150-04
HY150-05
HY150-06
HY130-18
HY150-08
HY150-09
HY160-12
HY150-11
HY150-12
HY150-13
HY150-14
HY150-15
HY150-16
HY150-17
HY150-18
HY150-19
HY150-20
NY150-21
HY150-22

Description
Housing
Connection Head
Trigger
Roll Pin
Valve
O-Ring
Spring
Valve Plug
O-Ring
Washer
Thread Ring Gear
Clamp Nut
Idler Gear
Idler Gear Pin
Idler Gear Plate
Crank Shaft
Ratchet Anvil
Ratchet Housing
Spacer
Needle Bearing
Drive Bushing

Item#
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42

Parts No.
HY150-23
HY150-24
HY150-25
HY150-26
HY150-27
HY150-28
HY150-29
HY150-30
HY150-31
HY150-32
HY150-33
HY150-34
HY150-35
HY150-36
HY150-37
HY150-38
HY150-39
HY150-40
HY150-41
HY150-42

Description
Ratchet Yoke
Cylinder
Rotor
Rotor Blade
Front Plate
Front Bearing
Rear Plate
Rear Bearing
Cylinder Pin
Thrust Washer (3/8")
Thrust Washer (1/2")
Spring
Lock Pin
Ratchet Pawl
Pin
Reverse Button
Retainer Ring
Spring
Steel Ball
Washer

For technical questions, please call 1-800-444-3353.

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Exploded View Diagram - Ratchet Wrench

For technical questions, please call 1-800-444-3353.

Page #17 -- SKU: 33567

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PARTS LIST – AIR IMPACT WRENCH
Item#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

Parts No.
16001
16002
16003
16004
16005
16006
16007
16008
16009
16010
16011
16012
16013
16014
16015
16016
16017
16018
16019
16020
16021
16022

Description
Housing
Valve Sleeve
Reverse Valve
Trigger
Spring Pin
Valve Stem
Bushing
Steel Ball
Spring
Hose Adapter
Air Regulator
O-Ring
Set Screw
Spring
Anvil Bushing
Anvil Collar
O-Ring
Anvil
Hammer Cage
Hammer Pin
Hammer Dog
Drive Cam

Item#
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43

Parts No.
16023
16024
16025
16026
16027
16028
16029
16030
16031
16032
16059
16033
16035
16036
16037
16038
16039
16040
16041
16042
16043

Description
Ball Bearing (X2)
Cylinder
Rotor
Rotor Blade (X6)
Front End Plate
Spring Pin
Rear End Plate
Spring Pin
Oil Seal
Rear Gasket
O-Ring
Rear Cover
Cap Screw (X4)
Pin
Spring
Set Screw
Exhaust Deflector
Tapping Screw (X2)
Set Screw
Protecting Rubber
Rubber

For technical questions, please call 1-800-444-3353.

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Exploded View Diagram -- Air Impact Wrench

For technical questions, please call 1-800-444-3353.

Page #19 -- SKU: 33567

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