Cornwell Tools CAT-250AR Product manual

CAT-250AR 1 Rev. 9/19/02
Operating Instructions • Warning Information • Parts Breakdown
CAT-250AR
1/4" Mini Air
Ratchet
Working Torque . . . . . . . . . . . . . .5-18 ft. lbs.
Max. Torque . . . . . . . . . . . . . . . . . .30 ft. lbs.
Max. Free Speed . . . . . . . . . . . . . . . .240 rpm
Recom. Air Pressure . . . . . . . . . . . . . .90 psig
Overall Length . . . . . . . . . . . . . . . . . . . .7.25"
Weight . . . . . . . . . . . . . . . . . . . . . . . .1.4 lbs.
Air Consumption . . . . . . . . . . . . . . . . . .3 cfm
SPECIFICATIONS
Some dust created by power sanding, sawing, grinding, drilling,
and other construction activities contains chemicals known 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
and other masonry products, and
• 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 filter out microscopic particles.
ALWAYS READ
INSTRUCTIONS
BEFORE USING
POWER TOOLS
ALWAYS WEAR
SAFETY GOGGLES
WEAR HEARING
PROTECTION
AVOID
PROLONGED
EXPOSURE TO
VIBRATION
• MAXIMUM RPM OF 240
• MAX AIR PRESSURE: 90 PSIG,
6.2 BAR
• RPM OF THE ACCESSORY
MUST EXCEED TOOL RPM

CAT-250AR 2 Rev. 9/19/02
WARNING - FOLLOW THESE RULES FOR SAFE OPERATION!
This Instruction Manual Contains
Important Safety Information.
READ THIS INSTRUCTION
MANUAL CAREFULLY AND
UNDERSTAND ALL INFORMATION
BEFORE OPERATING THIS TOOL.
• Always operate, inspect and maintain this
tool in accordance with American National
Standards Institute Safety Code of
Portable Air Tools (ANSI B186.1) and
any other applicable safety codes
and regulations.
• For safety, top performance and
maximum durability of parts, operate
this tool at 90 psig 6.2 bar max air pressure with
3/8” diameter air supply hose.
• Always wear impact-resistant eye
and face protection when operating
or performing maintenance on this
tool. Always wear hearing protection
when using this tool.
• High sound levels can cause
permanent hearing loss. Use hearing
protection as recommended by your
employer or OSHA regulation.
• Keep the tool in efficient operating
condition.
• Operators and maintenance personnel must
be physically able to handle the bulk, weight and
power of this tool.
• Air under pressure can cause severe injury. Never
direct air at yourself or others. Always turn off the
air supply, drain hose of air pressure and detach
tool from air supply before installing,
removing or adjusting any accessory
on this tool, or before performing
any maintenance on this tool.
Failure to do so could result in injury.
Whip hoses can cause serious injury.
Always check for
damaged, frayed or loose hoses and fittings, and
replace immediately. Do not use quick detach
couplings at tool. See instructions for correct set-up.
• Air powered tools can vibrate in use. Vibration,
repetitive motions or uncomfortable positions over
extended periods of time may be harmful to your
hands and arms. Discontinue use of tool if
discomfort, tingling feeling or pain occurs. Seek
medical advice before resuming use.
• Place the tool on the work before starting the
tool. Do not point or indulge in any horseplay with
this tool.
• Slipping, tripping and/or falling while operating
air tools can be a major cause of serious injury or
death. Be aware of excess hose left on the walking
or work surface.
• Keep body working stance
balanced and firm. Do not
overreach when operating the tool.
• Anticipate and be alert for sudden
changes
in motion during start up and operation
of any power tool.
• Do not carry tool by the hose. Protect the hose
from sharp objects and heat.
• Tool shaft may continue to
rotate briefly after throttle is
released. Avoid direct contact with
accessories during and after use.
Gloves will reduce the risk of cuts or
burns.
• Keep away from rotating end of tool. Do
not wear jewelry or loose clothing.
Secure long hair. Scalping can occur if
hair is not kept away from tool and
accessories. Choking can occur if
neckwear is not kept away from tool
and accessories.
• Do not lubricate tools with flammable or volatile
liquids such as kerosene, diesel or jet fuel.
• Don't force tool beyond its rated capacity.
• Do not remove any labels. Replace any damaged
labels.

CAT-250AR 3 Rev. 9/19/02
AIR SUPPLY
Tools of this class operate on a wide range of air
pressures. It is recommended that air pressure of these
tools measures 90 PSI at the tool while running free.
Low pressure (under 90 psig; 6.2bar) reduces the speed
of all air tools. Low air pressure not only wastes time,
but also costs money. Higher pressure (over 90 psig; 6.2
bar) raises performance beyond the rated capacity of
the tool which will shorten the tool’s life because of
faster wear and could cause injury.
Always use clean, dry air. Dust, corrosive fumes and/or
water in the air line will cause damage to the tool.
Drain the air tank daily. Clean the air inlet filter screen
on at least a weekly schedule. The recommended
hookup procedure can be viewed in the above figure.
The air inlet used for connecting air supply, has stan-
dard 1/4" NPT American Thread. Line pressure should
be increased to compensate for unusually long air hoses
(over 25 feet). Minimum hose diameter should be 3/8"
I.D. and fittings should have the same inside dimensions
and be tightly secured.
LUBRICATION
Lubricate the air motor daily with air tool oil. If no air
line oiler is used, run a teaspoon of oil through the
tool. The oil can be squirted into the tool air inlet or
into the hose at the nearest connection to the air
supply, then run the tool. The amount of oil to be used
is 1 ounce. Overfilling will cause a reduction in the
power of the tool.
OPERATION
This ratchet wrench is rated at 1/4" USS bolt size. Rating
must be down graded for spring U bolts, tie bolts, long
cap screws, double depth nuts, badly rusted conditions
and spring fasteners as they absorb much of the impact
power. When possible, clamp or wedge the bolt to
prevent springback.
Soak rusted nuts in penetrating oil and break rust seal
before removing with impact wrench. If nut does not
start to move in three to five seconds use a larger size
impact wrench. Do not use impact wrench beyond rated
capacity as this will drastically reduce tool life.
NOTE: Actual torque on a fastener is directly related to
joint hardness, tool speed, condition of socket and the
time the tool is allowed to impact.
WARRANTY
Cornwell warrants its air tools for a period of 1 year to
the consumer. We will repair any air tool covered under
this warranty which proves to be defective in material or
workmanship during the warranty period. In order to
have your tool repaired, return the tool to any Cornwell
Authorized Warranty Center, freight prepaid. Please
include a copy of your proof of purchase and a brief
description of the problem. The tool will be inspected
and if any part or parts are found to be defective in
material or workmanship, they will be repaired free of
charge and the repaired tool will be returned to you
freight prepaid.
This warranty gives you specific rights. You may also
have other rights which vary from state to state.
The foregoing obligation is Cornwell’s sole liability
under this or any implied warranty and under no
circumstances shall Cornwell be liable for any incidental
or consequential damages.
Note: Some states do not allow the exclusion or
limitation of incidental or consequential damages so the
above limitation or exclusion may not apply to you.
Nipple

CAT-250AR 4 Rev. 9/19/02
PARTS BREAKDOWN - CAT-250AR
Ref. # Item # DESCRIPTION QTY
1 62501 Plug 1
2 62502 O-Ring 1
3 62503 Throttle Valve Spring 1
4 62504 Valve 1
5 62505 Valve Stem 1
6 62506 Valve Bushing 1
7 62507 Air Inlet Assembly 1
8 62508 Throttle Lever 1
9 62509 Spring Pin 1
10 62510 Handle 1
10-1 62510-1C Blue Cushion-Grip Handle 1
11 30516 Ball Bearing 1
12 62512 Rear End Plate 1
13 62513 Spring Pin 1
14 62514 Rotor 1
15 62515 Rotor Blade 4
16 62516 Cylinder 1
17 62517 Front End Plate 1
18 30524 Ball Bearing 1
19 62519 Washer 1
20 62520 Internal Gear 1
21 62521 Planet Gear 3
Ref. # Item# DESCRIPTION QTY
23K 62523K Gear Plate Assembly 1
24 62524 Bushing 1
25 62525 Clamp Nut 1
26 62526 Ratchet Housing 1
27 62527 Needle Bearing 1
28 62528 Crank Shaft 1
29 62529 Drive Bushing 1
30 62530 Ratchet Yoke 1
31 * Washer 1
32 * Reverse Button 1
33 * Pawl Pivot 1
34 * Ratchet Anvil 1
35 * Spring 1
36 * Spring Cap 1
37 * Ratchet Pawl 1
38 * Friction Spring 2
39 * Steel Ball 2
40 * Thrust Washer 1
41 * Retaining Ring 1
42 62542 Exhaust Deflector 1
* Available only as a head kit, part # CAT-250AR-K
30
29
27
26
25
24
11
12
13
15
14
16
17
18
19
20
21
23K 10
9
8
10-1
10-2
42
7
6
5
4
3
2
1
28