Matco Tools MT1871R Product manual

MT1871R 1 Rev. 11/24/04
MT1871R
Reversing
Heavy Duty
Cut-Off Tool
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.
MT1871R
Max. Free Speed . . . . . . . . . . . . . . . . . . . . . . . . . . 18,000 RPM
Air Inlet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/4" NPT
Air Hose Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8" ID
Recommended Air Pressure . . . . . . . . . . . . . . . . . . . . . . 90 PSIG
Length. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11/16"
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.05 LBS.
Air Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 CFM
SPECIFICATIONS
• Operating Instructions • Warning Information
• Parts Breakdown
ALWAYS READ
INSTRUCTIONS
BEFORE USING
POWER TOOLS
ALWAYS WEAR
SAFETY GOGGLES
WEAR HEARING
PROTECTION
AVOID
PROLONGED
EXPOSURE TO
VIBRATION
• MAXIMUM RPM OF 18,000
• MAX AIR PRESSURE: 90 PSIG,
6.2 BAR
• RPM OF THE ACCESSORY
MUST EXCEED TOOL RPM

MT1871R 2 Rev. 11/24/04
MT1871R Reversing Heavy Duty Cut-Off Tool
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 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.
• 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.
• Place the tool on the work before starting the 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.
• Correct grinding wheel mounting is necessary to
prevent injury from broken wheels. Do not use
chipped or cracked grinding wheels. Grinding
wheels should be a free fit on the spindle to prevent
stress at the hole. Use only wheel collars that come
with the grinder for mounting the grinding wheel.
Flat washers or other adapters may over stress the
wheel. Always use heavy paper blotter discs
between the wheel collars and the grinding wheel
Tighten the wheel on the spindle to prevent spin off
when the air grinder is turned off.
• Do not lubricate tools with flammable or volatile
liquids such as kerosene, diesel or jet fuel.
• Do not force tool beyond its rated capacity.
• Do not remove any labels. Replace damaged labels.
FAILURE TO OBSERVE THESE WARNINGS COULD RESULT IN INJURY
OPERATION
When using the grinder be careful not to exert excessive force. Too
much force could be hazardous if it causes the cutting tool spindle
to bend or break.
The burning of the work piece or excessive speed reduction
indicates too much force being applied. Changing to a free
cutting tool may be better for the desired rate of speed and stock
removal.
Avoid hazardous conditions by making sure there is sufficient force
on the spindle of the cutting tool by placing the spindle 7/16" or
more inside the collet.

MT1871R 3 Rev. 11/24/04
MT1871R Reversing Heavy Duty Cut-Off Tool
WARRANTY
Matco warrants its air tools for a period of 1 year to the consumer.
We will repair any MT Series 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 either of the Matco Authorized Warranty Centers listed below,
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, the tool will be repaired free of charge and 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 Matco’s sole liability under this or any
implied warranty and under no circumstances shall Matco 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.
MATCO AIR COMMAND
Tool Repair SV
1330 Commerce Dr.
Stow, OH 44224
[phone]
DISCOUNT TOOL REPAIR
3433 Losee Rd. #1
North Las Vegas, NV 89030
[phone]
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. Higher pressure and unclean air
will shorten tool life because of faster wear and may create a
hazardous condition.
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 hook-up procedure can be viewed
in Figure 1.
The air inlet (Figure 2), used for connecting air supply, has standard
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.
TROUBLESHOOTING
Other factors outside the tool may cause loss of power or erratic
action. Reduced compressor output, excessive drain on the air line,
moisture or restrictions in air pipes or the use of hose connections
of improper size or poor conditions may reduce air supply. If
outside conditions are in order, and tool still runs erratically,
disconnect tool from hose and take tool to your nearest Matco
authorized service center.
LUBRICATION & MAINTENANCE
Lubricate the tool daily with a good grade of 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 Figure 2, or into the hose at
the nearest connection to the air supply, then run the tool. A rust
inhibitive oil is acceptable for air tools.
FIG. 1 FIG. 2
AIR INLET
FEATURES
• Extra powerful .45 horsepower motor
• Safety throttle lever to prevent accidental start ups
• Comfort grip for better control
• Rotating inlet bushing for ease of use
• Rear exhaust directs air away from work
• Built in air regulator
• Patent Pending reversing feature to allow for sparks
to be deflected away from the work
• Heavy duty wheel guard

MT1871R 4 Rev. 11/24/04
MT1871R Reversing Heavy Duty Cut-Off Tool
ITEM PART NO. DESCRIPTION QTY.
1 RS187101 Motor Housing 1
2 RS187102 Spring Pin 1
3 RS187103 Air Inlet Assembly 1
4 RS188004 Throttle Lever 1
5 RS187105 Valve Stem 1
6 RS233A06 Deflector 1
7 RS187107 O-Ring 1
8 RS233A08 Spring 1
9 RS187109 Motor Gasket 1
10 RS187110 Reverse Valve 1
11 RS187111 Reverse Lever 1
12 RS233A12 Rotor Spacer 1
14 RS187114 Rear End Plate 1
15 RS187115 Rotor 1
16 RS187116 Rotor Blade 4
17 RS182717 Spring Pin 1
18 RS187118 Cylinder 1
19 RS178819 Front End Plate 1
20 RS10920 Ball Bearing 1
ITEM PART NO. DESCRIPTION QTY.
21 RS187121 Air Regulator 1
22 RS187122 Spindle 1
23 RS181035 Retaining Ring 1
24 RS187124 Disc Cover 1
25 RS108A12 Ball Bearing 1
26 RS187126 Clamp Nut 1
27 RS187127 Washer 1
28 RS233A28 Double Ended Spanner 2
29 RS233A29 Retainer Ring 1
30 RS187130 Cutting Wheel 1
31 RS43011 O-Ring 2
32 RS187132 Hex. Key Wrench 1
35 RS178830 Screw 1
36 RS187136 O-Ring 1
37 RS78741 Spring Pin 1
43 RS187143 Screw 1
44 RS187144 Spring Washer 1
46 RS187146 Screw 1
52 RS187152 Rubber Grip 1
NOTE: Part #35 has left handed
threads, so when removing part
#30 (Cutting Wheel), be sure
to turn part #35 clockwise to
remove.