Central Pneumatic 96989 Installation manual

JUMBO AIR BELT SANDER
Model 96989
SET UP AND OPERATING INSTRUCTIONS
Diagrams within this manual may not be drawn proportionally.
Due to continuing improvements, actual product may differ slightly from the product described herein.
Distributed exclusively by Harbor Freight Tools®.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright©2007 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 or replacement parts, please call 1-800-444-3353.

Page 2SKU 96989 For technical questions, please call 1-800-444-3353.
SAVE THIS MANUAL
Keep this manual for the safety warnings and precautions, assembly, operating,
inspection, maintenance and cleaning procedures. Write the product’s serial number in
the back of the manual near the assembly diagram (or month and year of purchase if
product has no number). Keep this manual and the receipt in a safe and dry place for
future reference.
IMPORTANT SAFETY INFORMATION
In this manual, on the labeling, and all other information
provided with this product:
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
DANGER indicates a hazardous situation
which, if not avoided, will result in death or
serious injury.
WARNING indicates a hazardous situation
which, if not avoided, could result in death
or serious injury.
CAUTION, used with the safety alert
symbol, indicates a hazardous situation
which, if not avoided, could result in minor
or moderate injury.
NOTICE is used to address practices not
related to personal injury.
CAUTION, without the safety alert symbol,
is used to address practices not related to
personal injury.
DANGER
WARNING
CAUTION
NOTICE
CAUTION

Page 3SKU 96989 For technical questions, please call 1-800-444-3353.
GENERAL SAFETY RULES
WARNING! Read all instructions
Failure to follow all instructions listed below may result in serious injury.
The term “tool” in all of the warnings listed below refers to your Jumbo Air Belt
Sander.
SAVE THESE INSTRUCTIONS
1. Work area safety
a. Keep work area clean and well lit. Cluttered or dark areas invite accidents.
b. Do not operate tools in explosive atmospheres, such as in the presence of
ammable liquids, gases or dust. Tools can create sparks which may ignite
the dust or fumes.
c. Keep children and bystanders away while operating. Distractions can
cause you to lose control.
2. Personal safety
a. Stay alert, watch what you are doing and use common sense when operating
this Jumbo Air Belt Sander. Do not use while you are tired or under the
inuence of drugs, alcohol or medication. A moment of inattention while
operating may result in serious personal injury.
b. Use safety equipment. Proper safety equipment used for appropriate
conditions will reduce personal injuries.
c. Avoid accidental starting. Ensure that your hand is off the Throttle Lever
(26) before attaching air supply. Carrying tools with your nger on the switch
invites accidents.
d. Do not overreach. Keep proper footing and balance at all times. This
enables better control of the tool in unexpected situations.
e. Dress properly. Do not wear loose clothing or jewelry. Keep your hair,
clothing and gloves away from moving parts. Loose clothes, jewelry or long
hair can be caught in moving parts.
f. If devices are provided for the connection of dust extraction and collection
facilities, ensure these are connected and properly used. Use of these
devices can reduce dust-related hazards.
3. Power tool use and care
a. Do not force the Jumbo Air Belt Sander. Use the correct tool for your
application. The correct tool will do the job better and safer at the rate for
which it was designed.
b. Do not use the tool if the switch does not turn it on and off. Any tool that
cannot be controlled with the switch is dangerous and must be repaired.

Page 4SKU 96989 For technical questions, please call 1-800-444-3353.
c. Disconnect the air supply before making any adjustments, or storing
power tools. Such preventive safety measures reduce the risk of
starting the tool accidentally.
d. Store this Jumbo Air Belt Sander out of the reach of children and do not
allow persons unfamiliar with the tool or these instructions to operate.
Tools are dangerous in the hands of untrained users.
e. Maintain this tool. Check for misalignment or binding of moving parts,
abnormal noises, breakage of parts and any other condition that may affect
the tool’s operation. If damaged, have the tool repaired before use. Many
accidents are caused by poorly maintained tools.
f. Use this tool in accordance with these instructions and in the manner
intended for this particular type of tool, taking into account the working
conditions and the work to be performed. Use of this tool for operations
different from those intended could result in a hazardous situation.
4. Service
a. Have your Jumbo Air Belt Sander serviced by a qualied repair person using
only identical replacement parts. This will ensure that the safety of the tool is
maintained.
VIBRATION HAZARD
This Jumbo Air Belt Sander vibrates during use. Repeated or long-term
exposure to vibration may cause temporary or permanent physical injury,
particularly to the hands, arms and shoulders. To reduce the risk of vibration-
related injury:
1. Anyone using vibrating tools regularly or for an extended period should rst
be examined by a doctor and then have regular medical check-ups to ensure
medical problems are not being caused or worsened from use. Pregnant women
or people who have impaired blood circulation to the hand, past hand injuries,
nervous system disorders, diabetes, or Raynaud’s Disease should not use this
tool. If you feel any medical or physical symptoms related to vibration (such as
tingling, numbness, and white or blue ngers), seek medical advice as soon as
possible.
2. Do not smoke during use. Nicotine reduces the blood supply to the hands and
ngers, increasing the risk of vibration-related injury.
3. Wear suitable gloves to reduce the vibration effects on the user.
4. Use tools with the lowest vibration when there is a choice between different
processes.
5. Include vibration-free periods each day of work.

Page 5SKU 96989 For technical questions, please call 1-800-444-3353.
6. Grip tool as lightly as possible (while still keeping safe control of it). Let the tool
do the work.
7. To reduce vibration, maintain the tool as explained in this manual. If any
abnormal vibration occurs, stop use immediately.
SPECIFIC SAFETY RULES
WARNING! To prevent serious injury and/or property damage:
1. Wear ANSI-approved safety glasses, heavy-duty work gloves, and NIOSH-
approved dust mask/respirator under full face shield during use.
2. Secure brackets and guards in place before use.
3. Do not exceed maximum air pressure of 90 PSI.
4. Use only clean air from an air compressor. Never use bottled compressed air, or
any gas, such as helium.
5. Inspect before use; do not use if parts are loose or damaged.
6. Maintain labels and nameplates on the tool. These carry important safety
information. If unreadable or missing, contact Harbor Freight Tools for a
replacement.
7. Avoid unintentional starting. Prepare to begin work before turning on the tool
and/or attaching the air supply.
8. Do not carry the Jumbo Air Belt Sander by the air hose, or the hose from the air
supply.
9. Do not force or apply heavy pressure to the Jumbo Air Belt Sander. Let the
Sander do the work.
10. Do not direct air from the hose at yourself, others, or animals at anytime.
11. Do not lay the Jumbo Air Belt Sander down until it has come to a complete stop.
Moving parts can grab the surface and pull the tool out of your control.
12. When using the Jumbo Air Sander, maintain grip on the tool with both hands to
resist starting torque.
13. Do not leave the Jumbo Air Belt Sander unattended when it is attached to an air
supply. Turn off the tool, and disconnect it’s air supply before leaving.
14. Use clamps (not included) or other practical ways to secure and support the
workpiece to a stable platform. Holding the work by hand or against your body is
unstable and may lead to loss of control.
15. This product is not a toy. Keep it out of reach of children.

Page 6SKU 96989 For technical questions, please call 1-800-444-3353.
16. Some dust created by power sanding, sawing, grinding, drilling, and other
construction activities, contains 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
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 lter out microscopic particles. (California Health &
Safety Code § 25249.5, et seq.)
17. WARNING: The brass components of this product contain lead, a chemical
known to the State of California to cause birth defects (or other reproductive
harm). (California Health & Safety code § 25249.5, et seq.)
18. The warnings, precautions, and instructions discussed in this instruction manual
cannot cover all possible conditions and situations that may occur. It must be
understood by the operator that common sense and caution are factors which
cannot be built into this product, but must be supplied by the operator.
SAVE THESE INSTRUCTIONS.

Page 7SKU 96989 For technical questions, please call 1-800-444-3353.
SPECIFICATIONS
Construction Materials
Air Motor Housing, Handle Bracket, Rear Belt Cover: Cast
Aluminum
Throttle Lever & Side Plate: Sheet Steel
Air Inlet: Machined Steel
Housing Grip: ABS
Abrasive Belts: Aluminum Oxide w/Reinforced Cloth Fiber Backing
Maximum Operating Air
Pressure 90 PSI
Air Consumption 22 CFM (continuous), 11 cfm (intermittent use)
Air Inlet Size 1/4” X 18 NPT (Female)
Speed 19,000 RPM
Recommended Hose Size 3/8”
Abrasive Belt Size 1” W X 18” L
Belt Adjustment Threaded Knob
Speed Regulator Adjustment Throttle Adjusting Screw
UNPACKING
When unpacking, check to make sure that the item is intact and undamaged. If any
parts are missing or broken, please call Harbor Freight Tools at the number shown on the
cover of this manual as soon as possible.
SET UP INSTRUCTIONS
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the
beginning of this manual including all text under subheadings therein
before set up or use of this product.
Risk of accidental starting; resulting in serious personal
injury. Make sure Throttle Lever of the tool to its “OFF” (full
up) position and disconnect air supply before assembling or
making any adjustments to the tool.
Note: For additional information regarding the parts listed in the following pages, refer
to the Assembly Diagram near the end of this manual.
Assembly
Handle Assembly (16) needs to be attached. It is threaded on one end and can
be attached at two different points and congured in different positions:
WARNING
REV 08a

Page 8SKU 96989 For technical questions, please call 1-800-444-3353.
a.
Figure 3
Handle (16) Motor Housing (20)
Handle Support Assembly (19)
Screw the Handle Assembly (16) into the threaded end of the Handle Support
(19), or into the Motor Assembly (20). See Figure 3, 4 & 5.
Figure 4
Handle (16)
Figure 5
Handle (16)
Handle
Support (19)
Handle Support
(19)
Adjusting Screw
(17)

Page 9SKU 96989 For technical questions, please call 1-800-444-3353.
b. The Handle Support (19) may be congured differently by loosening the lower
Adjusting Screw (17), repositioning the Handle Support (19) and retightening
the lower Adjusting Screw (17). See Figure 4 & 5.
OPERATING INSTRUCTIONS
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the
beginning of this manual including all text under subheadings therein
before set up or use of this product.
Tool Set Up
1.
Figure 1
Hose line, air valve, oiler, lter, regulator and air hose on reel are not included
with this Jumbo Air Belt Sander but are available at Harbor Freight Tools. See
Figure 1
2. Always read and follow all manufacturer’s safety precautions, setup, and
maintenance instructions found in the air compressor manual you will be using
with this Jumbo Air Belt Sander.
3.
Quick Coupler
Figure 2
Leader Hose
Correct Hook Up
Incorrect Hook Up
To Air Supply
Vibration may cause failure if a quick change coupling is connected directly to the
Jumbo Air Belt Sander. To overcome this, connect a leader hose (not included).
to the Sander. A quick change coupling may then be used to connect the leader
hose to the air line recoil hose. See Figure 2

Page 10SKU 96989 For technical questions, please call 1-800-444-3353.
General Operating Instructions
1. With the Throttle Lever (26A) in “OFF” (full up) position, attach the air supply
hose as suggested in number 3 of “Tool Set up” section on page 9 of this manual.
Do not hold the Throttle Lever (26A) down while connecting the air supply hose.
2. Do not exceed the maximum air pressure of 90 PSI.
3. This Jumbo Air Belt Sander requires two hand control at all times.
4. Always test on scrap work piece before using the tool on the primary project.
5. If the speed of the Belt Sander needs adjustment beyond the control of the
Throttle Lever (26A), turn off the Belt Sander, disconnect the air supply, and
adjust the maximum speed of the belt with the Speed Regulator (Slotted Cap
Screw) (27A). Turn it clockwise to slow the speed and counterclockwise to
increase. This action moves Valve Stem (24A) in and/or out allowing the Throttle
Lever (26A) only limited travel.
6. Connect the air supply and turn on the Jumbo Air Belt Sander and test again on a
scrap work piece as in number 4 of this section.
7. Always work off the “return” side of the sanding belt. This will ensure superior
tracking and reduce down time of the tool.
8. Always sand in the same direction as the grain of the wood to avoid scoring
across the grain.
9. To prevent accidents, turn off the tool and disconnect its air supply after use.
Clean, then store the tool indoors out of children’s reach.
Abrasive Belt Changing Instructions
1. Disconnect the air supply.
2. Remove the Guard (13).
3. Pull back on the Tension Arm (5).
4. Remove the worn belt and replace with identical type new belt.
5. Replace the Guard (13) and attach the air supply.
6. Adjust the belt tracking by turning the Tracking Knob (6) to the left or right while
holding down the Throttle Lever (26A) just enough to keep the belt moving. The
Throttle Lever (26A) controls the speed of the belt. A little pressure moves the
belt slow. Increase the pressure on the Lever and the belt moves faster. The
Maximum speed as set by the Speed Regulator (27A) is reached by pressing the
Throttle Lever (26A) all the way down.
4. Be careful not to depress the Throttle Lever (26A) during this process.
Warning: Throttle Lever is active (without safety stop).

Page 11SKU 96989 For technical questions, please call 1-800-444-3353.
MAINTENANCE AND SERVICING
Risk of serious personal injury from accidental starting,
always disconnect from air supply before performing any
inspection, maintenance, or cleaning procedures.
Damaged equipment can fail, causing serious personal
injury. Do not use damaged equipment. If abnormal noise or
vibration occurs, have the problem corrected before further
use.
Cleaning, Maintenance, and Lubrication
1. BEFORE EACH USE, inspect the general condition of the tool. Check for loose
screws, misalignment or binding of moving parts, cracked or broken parts, and
any other condition that may affect its safe operation.
2. AFTER USE, clean external surfaces of the tool with clean cloth.
3. Keep the Guide Post’s (3) Tension Shaft (8) lubricated. Occasionally put a drop
of lubricating oil on Bearing (15) of Contact Wheel (21).
4. WARNING! If the air hose(s) of this Jumbo Air Belt Sander are damaged,
they must be replaced only by a qualied service technician. Never try to
repair damaged air hoses.
Troubleshooting
Problem Possible Causes Probable Solutions
Tool will not start or
has low air pressure
1. Air hose(s) damaged or
connections are loose.
2. Air regulator not set at proper PSI.
1. Check all hoses and connections.
Replace if necessary. DO NOT try
to repair air hose, ALWAYS replace.
2. Check, make sure air pressure
regulator on compressor is set to
90 PSI.
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 THE PRODUCT. IN FACT, THE MANUFACTURER 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.
WARNING

Page 12SKU 96989 For technical questions, please call 1-800-444-3353.
PARTS LIST FOR JUMBO AIR BELT SANDER
Part Description Q’ty
1Contact Arm Assembly 1
2 Plug 1
3 Guide Post 1
4 Small Spring 1
5Tension Arm 1
6 Tracking Knob 1
7 Large Spring 1
8 Tension Shaft 1
9 Dust Cover 1
10 Guard Hold-Down Screw 1
11 Housing 1
Part Description Q’ty
12 Hex-Nut 1
13 Guard 1
14 Guard Hold-Down Nut 1
15 Bearing 2
16 Handle 1
17 Adjusting Screw 2
18 Motor Lock 2
19 Handle Support 1
20 Motor Assembly 1
21 Contact Wheel 1
22 Shaft 1
PARTS LIST FOR AIR MOTOR ASSEMBLY
Part Description Q’ty
1A Drive Wheel 1
2A Exhaust Cover 1
3A Felt Silencer 1
4A Air Control Ring 1
5A Rotor Nut 1
6A Bearing 1
7A Shim Pack 1
8A Spacer 1
9A Bearing Race 1
10A Pin 1
11A Cylinder 1
12A Rotor 1
13A Blade 1
14A Bearing Race 1
15A Bearing 1
16A Housing 1
17A Screw 1
18A Gasket 1
Part Description Q’ty
19A Lock Nut 1
20A Collar 1
21A O-Ring 1
22A Insert 1
23A Housing 1
24A Valve Stem 1
25A Throttle Lever Pin 1
26A Throttle Lever 1
27A Speed Regulator (Slotted Cap
Screw)
1
28A Large O-Ring 1
29A Small O-Ring 1
30A Throttle Lever Retaining Ring 1
31A Seal 1
32A Tip Valve 1
33A Spring 1
34A Spacer 1
35A Inlet Bushing 1
NOTE: When ordering or referring to parts from the Air Motor Assembly Diagram
on page 13 of this manual, use the letter “A” after each number as shown in the
Air Motor Assembly Parts List above.

Page 13SKU 96989 For technical questions, please call 1-800-444-3353.
JUMBO AIR BELT SANDER ASSEMBLY DIAGRAM
*AIR MOTOR ASSEMBLY DIAGRAM
NOTE: *When ordering or referring to parts from the Air Motor Assembly
Diagram on this page, use the letter “A” after each number as shown in the Air
Motor Assembly Parts List above.

Page 14SKU 96989 For technical questions, please call 1-800-444-3353.
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not
available individually as replacement parts.
90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality
and durability standards, and warrants to the original purchaser that this product is free
from defects in materials and workmanship for the period of 90 days from the date of
purchase. This warranty does not apply to damage due directly or indirectly, to misuse,
abuse, negligence or accidents, repairs or alterations outside our facilities, criminal ac-
tivity, improper installation, normal wear and tear, or to lack of maintenance. We shall in
no event be liable for death, injuries to persons or property, or for incidental, contingent,
special or consequential damages arising from the use of our product. Some states
do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY
IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE
WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the com-
plaint must accompany the merchandise. If our inspection veries the defect, we will ei-
ther repair or replace the product at our election or we may elect to refund the purchase
price if we cannot readily and quickly provide you with a replacement. We will return re-
paired products at our expense, but if we determine there is no defect, or that the defect
resulted from causes not within the scope of our warranty, then you must bear the cost
of returning the product.
This warranty gives you specic legal rights and you may also have other rights which
vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]