Matco Tools MT1842 Product manual

MT1842 1 Rev. 06/18/08
MT1842
3/8"
Wobble Drive
Air Ratchet


Max. Free Speed ........................ 240 rpm
Net Weight ............................1.19 lbs.
Overall Length ..........................6-11/16"
Air Inlet..................................1/4"
Rec. Air Pressure ..........................90 psi
Rec. Hose Size ............................3/8"
Minimum Air Consumption ...................2.5cfm
Working Torque ....................... 5-20 ft. lbs.
Max. Torque ...........................30 ft. lbs.
Sound Level.............................88 dba

ALWAYS READ
INSTRUCTIONS
BEFORE USING
POWER TOOLS
ALWAYS WEAR
SAFETY GOGGLES
WEAR HEARING
PROTECTION
AVOID
PROLONGED
EXPOSURE TO
VIBRATION
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.

MT1842 2 Rev. 06/18/08
MT1842 3/8" Wobble Drive Air Ratchet
FAILURE TO OBSERVE THESE WARNINGS COULD RESULT IN INJURY.





•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.
•Impact wrenches are not torque control devices
 Fastenerswithspecifictorquerequirementsmustbe
 checked with suitable torque measuring devices
 afterinstallationwithanimpactwrench.
•Useonlyimpactwrenchsocketsandaccessorieson
this tool.
•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.

MT1842 3 Rev. 06/18/08
MT1842 3/8" Wobble Drive Air Ratchet

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pressure(over90psig;6.2bar)
raisesperformancebeyondtherated
capacityofthetoolwhichwillshorten
toollifebecause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.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.

Thisratchetwrenchisratedat3/8"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fasteners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
impactwrench.Ifnutdoesnotstartto
move in three to five seconds use a larger
sizeimpactwrench.Donotuseimpact
wrenchbeyondratedcapacityasthiswill
drastically reduce tool life.
Theforward/reversingbuttonisusedto
change the rotation of the tool. When the
buttonissettotheright,thetoolwillturn
in a right hand rotation. When the button
issettotheleft,thetoolwillturninaleft
hand rotation.
 Actual torque on a fastener is
directlyrelatedtojointhardness,tool
speed,conditionofsocketandthetime
thetoolisallowedtoimpact.
Use the simplest possible tool-to-socket
hookup.Everyconnectionabsorbsenergy
andreducespower.

Otherfactorsoutsidethetoolmaycause
lossofpowerorerraticaction.Reduced
compressoroutput,excessive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.Gritorgumdeposits
inthetoolmaycutpowerandmaybe
correctedbycleaningtheairstrainer
andflushingoutthetoolwithgumsolvent
oil or an equal mixture of SAE #10
and kerosene. If outside conditions are
in order and tool continues to perform
erratically,disconnecttoolfromhose
andtaketooltoyournearestauthorized
service center.

Lubricatetheairmotordailywithquality
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 connec-
tiontotheairsupply,thenrunthetool.
The amount of oil to be used is 1 ounce.
Overfillingwillcauseareductioninthe
powerofthetool.Greasefittingonyoke
occasionallytoensureproperlubrication
of the ratchet mechanism.
Nipple

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.
 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

MT1842 4 Rev. 06/18/08
MT1842 3/8" Wobble Drive Air Ratchet
      
1 RS63801 Plug 1
2 RS63802 O-Ring 1
3 RS63803 Throttle Valve Spring 1
4 RS63804 Valve 1
5 RS63805 Valve Stem 1
6 RS62506 Valve Bushing 1
7 RS183507 Air Inlet Bushing 1
7-1 RS183507-1 Muffler 1
8 RS183508 Throttle Lever 1
9 RS183509 Spring Pin 1
10 RS184210 Handle 1
11 RS30516 Ball Bearing 1
12 RS62512R Rear End Plate 1
13 RS183513 Spring Pin 1
14 RS62514 Rotor 1
15 RS62515 Rotor Blade 4
16 RS183516R Cylinder 1
17 RS62517 Front End Plate 1
18 RS30524 Ball Bearing 1
19 RS62519 Washer 1
20 RS62520 Internal Gear 1
21 RS62521 Planet Gear 3
22 Gear Pivot (Included in #23) 3
23 RS62523K Gear Plate Assembly (Incl. #22) 1
24 RS183524 Bushing 1
25 RS183525 Clamp Nut 1
26 RS183526 Ratchet Housing 1
27 RS62527 Needle Bearing 1
28 RS183528 Crank Shaft 1
29 RS183529 Drive Bushing 1
30 RS183530 Ratchet Yoke (Incl. #30-1) 1
30-1 Grease Fitting (Included in #30) 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 * Post 2
40 * Thrust Washer 1
41 * Retaining Ring 1
* Available only as a head kit, part # MT1842RHK.
US patent #6,305,246