Matco Tools MT1872L User manual

MT1872L 1 rev. 08/17/09
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:
 
 
 
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.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MT1872L
WheelSize.........................................................3"
Weight...................................................... 3.3LBS.
OverallLength ...................................................13.9"
Sound Pressure Level .............................................83 dBA
Max. Free Speed............................................ 18,000 RPM
Air Inlet...................................................... 1/4" NPT
Mim.AirHoseSize.............................................. 3/8"ID
RecommendedAirPressure........................................ 90PSI
AverageAirConsumption.........................................3.5CFM
SPECIFICATIONS
• Operating Instructions • Warning Information
• Parts Breakdown












Copyright © Professional Tool Products, 2009
All rights reserved.
MT1872L
6" Extended
Cut Off Tool
 
 
 
 
 
 
 

MT1872L 2 rev. 08/17/09
MT1872L 6" Extended 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.
• UseaccessoriesrecommendedbyMatcoTools.
• 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
Always use the recommended wheel guard to prevent injury from broken
grindingwheelparts.Ifaguardhaswithstoodawheelbreakage,discontinue
itsuseandreplaceitwithanewguard.Itmaybedamaged.Positiontheguard
betweenthegrindingwheelandtheoperator.Usebarriersto
protectothersfromwheelfragmentsandgrindingsparks.
Alwayswearimpact-resistanteyeandfaceprotectionwhen
involved in the operation of this tool. Even small projectiles
can injure eye and cause blindness. A grinding wheel that
burstscancauseveryseriousinjury.
Measure the air grinder speed daily with a tachometer to
make sure it is not greater than the RPM marked on the
grinding wheel. Never use a grinding wheel marked with a
speedlowerthantheairgrinderspeed.
Beforegrinding,testgrindingwheelbybrieflyrunningthetoolatfullthrottle.
Be sure to use a barrier (such as under a heavy work table) to stop any
possiblebrokenwheelparts.
To Replace Grinding Discs:
1. Usestopspanner(#66)toholdspindle(#47)inplace.
 Unscrewdiscnut(#56)usingstopspanner(#59).
2. Removeoldgrindingdiscandreplacewithnewgrindingdisc
 (grindingdiscisnotincludedwiththetool).
3. Screwondiscnut(#56)withshouldersidefacingtoolusing 
 stopspanner(#59)andtighten.
operaTion

MT1872L 3 rev. 08/17/09
MT1872L 6" Extended 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oneoftheMatcoAuthorizedWarranty
Centerslisted,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
(800)433-7098
discounT TooL repair
3433LoseeRd.#1
NorthLasVegas,NV89030
(702)657-6570
pneuTooL parTs & serVices co., LTd
33 Haas Road
Toronto
ON M9W 3A1 Canada
(416)748-1200
(888)748-1201(Toll-FreeinCanada)
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, restrictions in air pipes, the use of hose connections
of improper size or poor conditions may reduce air supply. If
outsideconditionsareinorderandthetoolstillperforms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1/2ounce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
feaTures
• Narrowprofileforeasyaccessduringuse.
• Full1/2HPmotorprovidesgreatpowerforheavydutycutting.
• 180degreeheadrotationtodirectsparksawayfromwork.
• Safetyleverandcompositegripmakethistoolcomfortableduringuse.
Air inlet

MT1872L 4 rev. 08/17/09
MT1872L 6" Extended Cut Off Tool
REF. NO. PART NO. DESCRIPTION QTY.
1 RS288301 Regulator 1
 2 RS288302 O-Ring 1
 3 RS288303 O-Ring 1
4 RS288304 Snap Ring 1
 5 RS187505 O-Ring 1
 6 RS187506 ValveStem 1
 7 RS288307 InletBushing 1
 8 RS187508 ExhaustSleeve 1
9 RS288309 Silencer 2
 10 RS288310 O-Ring 2
 11 RS1872L11 ProtectionRubber 1
12 RS288312 Pin 1
13 RS288313 Throttle Lever 1
14 RS288314 Spring 1
 15 RS288315 Valve 1
16 RS288316 Washer 1
 17 RS288317 Housing 1
18 RS30516 Bearing 1
19 RS288319 Rear Plate 1
20 RS288320 Rotor Blade 4
21 RS288321 Rotor 1
 22 RS288322 Cylinder 1
23 RS288323 Pin 2
24 RS2GR23 Bearing Spacer 1
25 RS288325 Front Plate 1
26 RS30524 Bearing 3
28 RS288328 Nut 1
29 RS2880L28 Coupling Nut 2
30 RS2880L29 Coupling 1
31 RS30RXL30 Bearing 1
32 RS288329 Clamp Nut 1
 33 RS1872L33 SpindleHousing 1
 34 RS1872L34 HandleLink(Left) 1
 35 RS1872L35 HandleLink(Right) 1
REF. NO. PART NO. DESCRIPTION QTY.
 36 RS1872L36 Screw(M5x13L) 2
 37 RS1872L37 Nut(M5) 2
 38 RS1872L38 Spindle 1
 39 RS288734 Bearing 2
 40 RS288327 BevelGear 1
 41 RS1872L41 AngleHousing(including#42) 1
42 RS288331 Oil Cup 1
 43 RS1872L43 AbsorptionCotton 1
44 RS2GR33A Snap Ring 1
45 RS288333 Bevel Gear 1
46 RS10920 Bearing 1
 47 RS1872L47 Spindle 1
 48 RS288337 Key 1
49 RS2883L43 Washer 1
 50 RS1872L50 ClampNut 1
51 RS60138 Handle 1
 52 * HandleLink 1
 53 * Screw(M4x27L) 1
54 * Disc Cover 1
 55 * Screw(M4x6L) 3
 56 RS187546 DiscNut 2
 58 RS165051 Hex(4M/M) 1
 59 RS288341 StopSpanner(19MM) 1
 60 * SteelBall(3MM) 1
61 * Spring 1
 62 * Screw 1
63 * Nut 3
64 * Bushing 1
65 * Trigger 1
 66 RS103841 StopSpanner(17mm) 1
*Asteriskedpartsonlyavailableasanassembly,RS1872L54A,
disccoverassembly.