BUG-O HDT-1200 Technical reference manual

INSTRUCTIONS
AND
PARTS MANUAL
Pleaserecordyourequipmentidentificationinformationbelowforfuturereference.Thisinformationcanbefound
onyour machine nameplate.
ModelNumber
SerialNumber
DateofPurchase
Wheneveryou request replacement parts or informationon this equipment, always supply theinformation you
haverecordedabove. LIT-HDT-IPM-1207
A DIVISION OF WELD TOOLING CORPORATION
3001 WEST CARSON STREET PITTSBURGH, PENNSYLVANIA USA 15204-1899
PHONE:[phone] http://www.bugo.com TELEFAX: 1- 412-331-0383
HEAVY-DUTY TRACTOR
HDT-1200
TRACTOR BASE PACKAGE
HDT-1250
TRACTORBASEPACKAGEW/EQUIPMENTMOUNTS
HDT-1000
WITHFEEDER&FLUXRECOVERY

2
MOVING PARTS can
cause serious injury.
PROTECT YOURSELF AND OTHERS FROM SERIOUS INJURY OR DEATH. KEEP
CHILDREN AWAY. BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE
AND REPAIR PROCEDURES ARE PERFORMED ONLY BY QUALIFIED INDIVIDUALS.
ELECTRIC SHOCK CAN KILL.
1) Theequipment isnotwaterproof. Using
theunitinawetenvironment may resultin
seriousinjury.Donottouch equipment
whenwetor standingin a wetlocation.
2) Theunused connectors have poweron
them.Alwayskeeptheunused
connectorscoveredwith the supplied
protectivepanels.Operation ofthe
machinewithouttheprotectivepanels
mayresult ininjury.
3) Neveropen theequipmentwithoutfirst
unpluggingthepower cordor serious
injurymayresult.
4) Verifythecustomer suppliedpower
connectionsare madein accordance
withallapplicable localand national
electricalsafetycodes. If noneexist,use
InternationalElectricCode (IEC)950.
5) Neverremove orbypassthe equipment
powercordground. Verify the equipment
isgrounded in accordance with all
applicablelocal and nationalelectrical
safetycodes.Innoneexist, use
InternationalElectricCode (IEC)950.
READ INSTRUCTIONS.
Readtheinstructionmanual before
installingandusingtheequipment.
1) Nevertryto stopthepinion from moving
exceptby removing poweror by using
theSTOPcontrol.
2) Donot removeanyprotective panels,
coversor guardsand operate
equipment.
PLASMA CUTTING can
produce destructive High
Voltage at High Frequency.
SAFETY
FALLING EQUIPMENT
can cause serious
personal injury and
equipment damage.
Faultyor careless user installationis
possible.As a result, never standor
walkunderneathequipment.
1) Ifusingplasma,seethatthemachineas
wellastheplasmapowersourceis
properlygrounded.
2) Donotuseoldermodelplasmamachines
meantformanualoperation.Thesecan
leakhighfrequencyathighvoltages,
whichcancausedangerousshock,as
wellasdestroycontrolcircuits.
3) Readtheinstructionmanualpageon
plasmacuttingcarefully,andfollowall
precautions.

3
HIGH FREQUENCY WARNINGS
WARNING: HIGH FREQUENCY CAN EFFECT MACHINE
OPERATIONAND THEREFORE, WELD QUALITY.
SPECIAL PRECAUTIONS ARE REQUIRED WHEN USING PLASMA,
TIG OR ANY WELDING PROCESS THAT USES HIGH FREQUENCY
TO STRIKE AN ARC.
Read the precautions below before installing and using the equipment.
PRECAUTIONS:
1) Someplasma or weldingcables arestrong sources ofhigh frequencyinterference.
NEVERlay aplasma or welding cable across the controls of themachine.
2) Alwaysphysically separate theplasma orweldingcable leadsfrom the machine
cables.For example,the plasmaor weldingcable leadsshould NEVERbe bundled
witha pendant cableor themachine powercord. Maximize theseparation between
anymachine cables andthe plasmaor weldingcables.
3) Strictly follow the grounding procedures specified for the plasma or welding unit.
NOTE: Some plasma and welding units produce exceptionally large amounts of
high frequency noise. They may require a grounding rod be driven into the earth
within six feet (2 meters) of the plasma or welding unit to become compatible with
an automatic cutting or welding process.
4) Ifthe highfrequency isproduced usinga sparkgap, adjustthe pointsso the gap is as
smallas possible. Thelarger the gap,the higherthevoltage andthe higher the
interference.
5) Some plasma or welding units will inject high frequency interference into the AC
power line. Use separate power line branches whenever possible to power the
plasma or welding source and the machine. Do not plug them into the same outlet
box.
6) Highfrequencynoisemay enter themachinethroughthe plasma orweldingsupply
remotecontactor leads.Some plasmaand weldingsources canproduce noise
spikesof up toseveral thousandvolts.These sourcesare not compatiblewith
automatedcuttingand welding equipment.It is recommendedthatthe remote
contactorleads on theseplasma orwelding sources notbe connectedto themachine.
Analternate solution is to purchasea separateremote contactorisolation box.

4
HEAVY-DUTY TRACTOR
INSTRUCTIONS AND PARTS MANUAL
TABLEOFCONTENTS
HDT-1200/1202/1204 - HEAVY-DUTY TRACTOR BASE PACKAGE
6......... INTRODUCTION
7......... SETUPANDOPERATION
8......... HDT-1010/1012/1014 TRACTOR / EXPLODED VIEW / PARTS LIST
9......... HDT-1015TRACTORWIRINGDIAGRAM
10 ........ HDT-1020 TRACTOR / EXPLODED VIEW
11 ........ HDT-1020 TRACTOR PARTS LIST
12 ........ HDT-1140 TRACTOR PENDANT / EXPLODED VIEW / PARTS LIST
13 ........ PENDANTWIRINGDIAGRAM
HDT-1250/1252/1254 HEAVY-DUTY TRACTOR WITH EQUIPMENT MOUNTS
14 ........ INTRODUCTION
15 ........ SETUPAND OPERATION
16 ........ HDT-1260 / EXPLODED VIEW / PARTS LIST
17 ........ HDT-1060 MAST / EXPLODED VIEW / PARTS LIST
18 ........ HDT-1270 WIRE REEL BRACKET / EXPLODED VIEW / PARTS LIST
19 ........ HDT-1280 CONTROL BOX BRACKET / EXPLODED VIEW / PARTS LIST
20 ........ HDT-1290 FLUX RECOVERYVACUUM MOUNT/ EXPLODED VIEW / PARTSLIST
HDT-1000-HEAVY-DUTY TRACTOR WITH FEEDER AND FLUX RECOVERY
21 ........ INTRODUCTION
22 ........ SETUPAND OPERATION
23 ........ HDT-1050 / EXPLODED VIEW / PARTS LIST
24 ........ HDT-1070 WIRE REEL / EXPLODED VIEW / PARTS LIST
25 ........ HDT-1080 NA-3 W/MOUNT / EXPLODED VIEW / PARTS LIST
26 ........ CONTROLBOXWIRINGDIAGRAM
27 ........ HDT-1085NA-3AUTOMATIC HEADMOUNT/ EXPLODED VIEW /PARTSLIST
28-29 ... HDT-1090 FLUX RECOVERY UNITW/MOUNT / EXPLODED VIEW / PARTS LIST
30 ........ WARRANTY
*LINCOLN IS A TRADEMARK OF LINCOLN ELECTRIC COMPANY.

5
HDT-1200/1202/1204
HEAVY-DUTYTRACTOR BASE PACKAGE
For this model please see page 6.
HDT-1250/1252/1254
HEAVY-DUTYTRACTORWITHEQUIPMENTMOUNTS
For this model please see page 14.
HDT-1000/1002/1004
HEAVY-DUTYTRACTORWITH
FEEDERAND FLUX RECOVERY
For this model please see page 21.

6
HDT-1200/1202/1204 / INTRODUCTION
TheHEAVY-DUTYTRACTORisalargetractorwithover-sizedwheelsforsubmerged-arcweldingonflat
steelplate. Thebase packageisavailablein120,240or42VACoperation.The120VACsetupisHDT-
1200,240 VACsetupisHDT-1202and42VACsetupisHDT-1204.Acontrolpendantisusedtooperate
thetractor’sspeedanddirection.Thependantalsoprovidestwoseparateweldcontactorswitchesforthe
startingoperationoftwoseparatetorches.TheLEDdisplayonthependantshowsthesettravelspeedfor
thetractor,providingrepeatablespeedduringsystemsetupandoperation.Thecustomerisresponsible
forthemountingofallweldingequipmenttothetractorbasepackage.WeldToolingCorporationcanalso
providecustommountingofthecustomer’sequipment.Contactthesalesofficefordetails.
HDT-1200/1202/1204
HEAVY-DUTY TRACTOR BASE PACKAGE
Pendant
Tractor
Power Cord

7
HDT-1200/1202/1204 / SETUP AND OPERATION
1. Removethemachinefromtheshippingbox. Besuretoaccountforallloosepartsbeforediscarding
thebox!
2. Locatethecordsthatshipwiththemachine. Apowercordandcontrolpendantcordshouldbe
included.Thecableconnectorsarekeyedtofittheirappropriatematesonthetractorandpendant.
Installthepowercableandpendantcabletotheirrespectivepanelconnectorsonthetractor.
3. Theoperationofthetractorishandledonthecontrolpendant.Installthecontrolpendantontothefree
sideofthecontrolpendantcable.
4. Iftheweldcontactorswitchesonthependantaretobeused,wireuptheweldingpowersupplies’
remotecontactorcircuittothesupplied,four-terminalcableconnector.
5. Ifthefollowerarmsaretobeused,installthemonthefrontandbackofthemachine. Makesurethat
thefrontfollowerarmislocatedintheshortposition. Thisguidesthefrontofthemachineintothefillet
member,allowingthetractortotrackastraightline.
6. Installthedesiredfeederequipmentontothetopplateofthetractor.Ifassistanceisrequiredforthis
step,contactWeldToolingCorporation’ssalesdepartmentforapplicationsupport.
7. DRYRUN:
Toensureproperoperationoftheunit,testbyturningthemainpoweronfromthefeedercontrol
panelifusedinthisconfigurationorbypluggingthetractorintoapowersource. Switchthetractor
traveldirectionswitchtothedesiredtraveldirectiononthependant. Adjustthespeedwiththeknob
locatedbelow theLED speed display.
8. Alltractorcontrolsarefullyadjustableduringcycleoperation.
NOTE:Thetractorcaneasilybere-wiredtodraw120VACpowerfromthewire-feederorwelding
powersupplyoutputs.ThedefaultconfigurationfortheHDT-1200/HDT-1202/1204istogetpower
from theAC linesthrough the supplied powercord. HOWEVER, HDT-1202/1204 (240, 42 VAC
VERSIONS) CANNOT BE RE-WIRED FOR OPERATION WITH WELDING POWER SUPPLY
OR FEEDER EQUIPMENT, ONLY HDT-1200 (120 VAC VERSION). See page 9 for details.

8
HDT-1010/1012/1014 TRACTOR / EXPLODED VIEW / PARTS LIST
Item Qty Part Number Description
1 2 FAS-0112 PAN HDSLT6-32X1/4BLACK
2 12 FAS-0104 #4-40X5/16PANHEAD,ZINC
3 12 FAS-1305 HEXNUT4-40NYLON
4 2 FAS-0722 FILHDSCR8-32X1/4
5 2 FAS-0124 8/32X3/8PANHD,DI-CHROME
6 3 MDS-1030 CABLECLAMP,NYLON,BLACK 7/16
7 2 FAS-1320 HEXNUT10-24
8 2 WAS-0221 #8INTERNALSTARLOCKWASHER
9 2 FAS-0126 #8-32 x 5/8 PAN HD, BLACK
10 1 HDT-1015 120 VAC
HDT-1015-240 240 VAC
HDT-1015-42 42 VAC
11 2 FAS-0115 6-32X1/2PANHEAD,ZINC
12 1 HDT-1020 TRACTORFRAME/MECHANICALS
13 1 BUG-5355-5 5' MTO F, 17-CONDUCTORCABLEASSY.
14 2 HDT-1190 FOLLOWERARM
7, 8, 9
10 11
12
14
1
2, 3 456
13

9
HDT-1015 TRACTOR WIRING DIAGRAM
HDT-1015* HDT-1015-240 HDT-1015-42
ITEM DESCRIPTION 120 VAC 240 VAC 42 VAC
CB CIRCUIT BREAKER BUG-2923 (.7A) BUG-2952 (.5A) BUG-2933 (2A)
D PILOT LIGHT BUG-1415 BUG-1428 BUG-1427
K RELAY BUG-1383 BUG-1551 BUG-9636
T TRANSFORMER BUG-9675 GOF-3112 BUG-1466
VT VOLT TRAP BUG-1393 BUG-1563 BUG-1393
F PRECISION SPEED CONTROL BUG-1725
C1 PANEL CONNECTOR BUG-9909
C2 PANEL CONNECTOR CON-07RP17M
C3 PANEL CONNECTOR BUG-1034
M GEAR MOTOR
(NOT PART OF WIRING GRP P.10) BUG-1550 (150:1)
TB TERMINAL BLOCK CWO-6288
*NA-3 version uses this with different TB configuration.
ELECTRICAL COMPONENT CHART

10
HDT-1020 TRACTOR / EXPLODED VIEW
1
2
3
4
5
5
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 21 23
24
25
26
27
28
29
31
22
30
32

11
HDT-1020 TRACTOR / PARTS LIST
Item Qty Part Number Description
1 4 BER-1001 FLANGEBEARING .502X .627 X
2 1 BUG-1550 GEARMOTOR(150:1)
3 4 BUG-1893 RETAININGRING1/2''EXTERNAL
4 3 FAS-0525 SOC HD CAP 8-32 X 1/2
5 20 FAS-0835 FLT HD SLT SCR 10-24 X 1/2
6 12 FAS-0838 FLT HD SLT SCR 10-24 X 7/8
7 6 FAS-0957 1/4-20 X 3/4 FLAT HD SOCKET
8 1 GOF-3014 DRIVEPINIONW/KEYSETSCREW
9 1 HDT-1021 TOPPLATE
10 1 HDT-1022 BOTTOMPLATE
11 1 HDT-1023 FRONTPLATE
12 1 HDT-1024 BACK PLATE
13 1 HDT-1025 LEFT PLATE
14 1 HDT-1026 RIGHTPLATE
15 1 HDT-1027 MODIFIEDSPURDRIVEGEARASSY
16 1 HDT-1028 CLUTCH LOCK PLATEASSY
17 1 HDT-1029 CLUTCH LOCK STOPASSY
18 2 HDT-1031 AXLE
19 1 HDT-1033 CLUTCH LEVERASSY
20 1 HDT-1034 CLUTCH LEVER CAMSHAFT
21 1 HDT-1035 CLUTCHCAMSHAFTBEARING
22 1 HDT-1036 CLUTCHCAMHUBASSY
23 4 HDT-1037 RUBBERIZEDMETALWHEEL
24 1 HDT-1039 HTD8TIMINGBELT
25 1 HDT-1041 MOTORMOUNTPLATE
26 3 HDT-1042 MOTORSTANDOFF
27 1 HDT-1046 COMPRESSIONSPRING(STEEL)
28 4 HDT-1047 STEELKEY1''LONGX1/8"SQUARE
29 2 HDT-1150 TIMINGBELTPULLEYASSY
30 1 HDW-1501 3/8''E-STYLERETAININGRING
31 3 WAS-0221 #8INTERNALSTARLOCKWASHER
32 4 FAS-0115 6-32 X 1/2 PAN HEAD

12
HDT-1140 TRACTOR PENDANT / EXPLODED VIEW / PARTS LIST
Item Qty Part Number Description
1 4 FAS-1305-N HEXNUT4-40NYLON
2 1 CBO-4168 PENDANTBOX
3 1 BUG-1764 METERDISPLAYBOARDASSY
4 1 BUG-9621 KNOB, STRAIGHT MOLDED
5 4 FAS-0104 4-40 C 3/8 PAN HEAD, BLACK
6 1 MDS-1011 DISPLAYBEZEL
7 4 FAS-0115 6-32X1/2PANHEAD,ZINC
8 1 HDT-1141 TOGGLE SWITCH DPDT, ON-OFF-ON
9 1 HDT-1142 PENDANTLABEL
10 1 BUG-9677 POTENTIOMETER
11 1 BUG-2255 TOGGLE SWITCH DPDT, ON-OFF-ON
12 1 BUG-1869 TOGGLE SWITCH SPST, ON-NONE-ON
13 1 BUG-5527 PANELCONNECTOR
14 4 FAS-0104 4-40 C 3/8 PAN HEAD, BLACK
SPEED READOUT
SPEED CONTROL
KNOB
DIRECTION
TOGGLE
SWITCH
SECONDARY
WELD CONTACT
SWITCH
PRIMARYWELD
CONTACT SWITCH
4
5
67
8
9
10
11
12
13
14
1
2
3

13
PENDANT WIRING DIAGRAM
ITEM DESCRIPTION PART NUMBER
C1 PANEL CONNECTOR BUG-5527
DM DIGITAL METER BUG-1764
P POTENTIOMETER CONTROL BUG-9677
SW1 SWITCH BUG-1869
SW2 SWITCH BUG-1869
SW3 SWITCH BUG-2255
ELECTRICAL COMPONENT CHART

14
HDT-1250/1252/1254 / INTRODUCTION
The HEAVY-DUTY TRACTOR can also be configured with the welding equipment mounting features
available in the HDT-1000 (see p.21 for details on HDT-1000). This assembly option adds the welding
equipmentmountstothebasepackagetractor(HDT-1200/1202/1204).Thetractorcomessetupfor120,
240or42VACoperation.ItcomeswithapowercordforusewithAClinepower.RefertoHDT-1200/1202/
1204fordetailsconcerningthetractor.Thetractorcontrolpanelislocatedonthependantforeaseofuse
while in process. The unit comes equipped with a mast and horizontal posts for mounting the preferred
welding equipment. The HEAVY-DUTY TRACTOR is able to travel long distances at a constant speed.
Twomethodsforweld-jointtrackingareavailable.Theincludedfollowerarmscanbeusedtotrackoffofa
vertical surface located along the weld seam, such as in fillet welding.Amagnetic track system is also
availablewhenbutt-weldingoperationisneeded.
HDT-1250/1252/1254
HEAVY-DUTYTRACTORWITH WELDING EQUIPMENTMOUNTS
Mast
FRONT VIEW SIDE VIEW
Tractor

15
HDT-1250/1252/1254 / SETUP AND OPERATION
1. Removethemachinefromtheshippingbox. Besuretoaccountforallloosepartsbeforediscarding
thebox!
2. Locatethecordsthatshipwiththemachine. Apowercordandcontrolpendantcordshouldbe
included.Thecableconnectorsarekeyedtofittheirappropriatematesonthetractorandpendant.
Installthepowercableandpendantcabletotheirrespectivepanelconnectorsonthetractor.
3. Theoperationofthetractorishandledonthecontrolpendant.Installthecontrolpendantontothefree
sideofthecontrolpendantcable.
4. Iftheweldcontactorswitchesonthependantaretobeused,wireuptheweldingpowersupply’s
remotecontactorcircuittothesupplied,four-terminalcableconnector.
5. Ifthefollowerarmsaretobeused,installthemonthefrontandbackofthemachine.Makesurethat
thefrontfollowerarmislocatedintheshorterofthetwopossiblepositions.Thisguidesthefrontofthe
machineintothefilletmember,allowingthetractortotrackastraightline.
6. Installtheweldingequipmenttobeusedwiththetractor.Themountingplatesaresuppliedwiththe
tractor.Itisthecustomer’sresponsibilitytoaddtheappropriatemountingholestothemountingplates
fortheirequipment.Ifassistanceisrequired,contactWeldToolingCorporation’ssalesdepartment
forapplicationassistance.
7. DRY RUN:
Toensureproperoperationoftheunit,testbyturningthemainpoweronfromthefeedercontrolpanel
ifusedinthisconfigurationorbypluggingthetractorintoapowersource. Switchthetractortravel
directionswitchtothedesiredtraveldirectiononthependant. Adjustthespeedwiththeknoblocated
belowtheLED speed display.
8. Alltractorcontrolsarefullyadjustableduringcycleoperation.
NOTE:The tractor can easily be re-wired to draw 120VAC power fromthe wire-feederor welding
powersupplyoutputs.Thedefaultconfigurationfor theHDT-1250/1252/1254isto getpowerfrom
theAC lines through the supplied power cord. However, HDT-1252/1254 (240, 42 VAC ver-
sions) cannot be re-wired for operation with welding power supply or feeder equipment,
only HDT-1250 (120 VAC version). See page 9 for details.
NOTES:
Refertop.8forHDT-1010/1012/1014,tractordrawingandpartslist.
Refertop.9forHDTwiringdiagram.
Refertop.10&11forHDT-1020,tractormechanicalsdrawingandpartslist.
Refertop.12forHDT-1140,pendantdrawingandpartslist.

16
3
4
1
2
HDT-1260 / EXPLODED VIEW / PARTS LIST
Item Qty Part Number Description
1 1 HDT-1060 MASTW/FOOTPLATE
2 1 HDT-1280 FEEDERCONTROLMOUNTW/OFEEDER
3 1 HDT-1270 WIRESPOOLBKTW/OSPOOLKIT
4 1 HDT-1290 FLUXRECOVERYVACUUMMOUNT

17
1
9
8
3
5
6
2
11
5
10
7
4
HDT-1060 MAST / EXPLODED VIEW / PARTS LIST
Item Qty Part Number Description
1 1 CWO-4586 1-9/32''I.D.EYEBOLT
2 4 FAS-0959 1/4-20 X 1'' FLAT HD SOCKET
3 1 HDT-1061 TOOLINGMAST
4 1 HDT-1062 TOOLINGMASTFOOTPLATE
5 1 HDT-1063 TOOLINGMASTRETAINERRING
6 1 HDT-1064 TOOLINGMASTRESTPLATE
7 1 HDT-1065 WELD HEAD MOUNT PLATE
8 1 HDT-1066 ACCESSORYMOUNTPLATE
9 1 HDT-1067 MAST CAP
10 2 HDT-1101 KIPPADJUSTABLE HANDLES
11 2 HDT-1103 SHOULDER SCREW-1/4-20 X 1/2

18
5
8
7
4
6
1
3
HDT-1270 WIRE REEL BRACKET / EXPLODED VIEW / PARTS LIST
Item Qty. Part Number Description
1 1 BUG-3274 INSULATOR
2 1 FAS-0308 1/2-13 X 1-1/2 HEX HD CAP SCR
3 1 FAS-0309 1/2-13 X 1 HEX HD CAP SCR
4 1 HDT-1073 WIRECAPTUREBAR
5 1 HDT-1075 WIREREELMOUNTBRACKET
6 2 WAS-0280 1/2 SAE WASHER
7 2 WAS-0281 1/2SPLITLOCK WASHER

19
4
6
3
10
9
2
5
7
1
8
HDT-1280 CONTROL BOX BRACKET / EXPLODED VIEW / PARTS LIST
Item Qty Part Number Description
1 4 FAS-0236 RND HD SCR 10-24 X 5/8
2 2 FAS-0309 1/2-13 X 1 HEX HD CAP SCR
3 4 FAS-1330 HEXNUT10-24
4 1 HDT-1083 NA-3MOUNTINGPLATE
5 1 HDT-1086 LINCOLNNA-3WELDER
6 1 HDT-1087 NA-3MOUNT
7 2 HDT-1102 U-BOLTW/MOUNTINGPLATE
8 4 WAS-0230 #10 FLAT WASHER
9 4 WAS-0232 #10 SPLIT LOCK WASHER
10 2 WAS-0280 1/2 SAE WASHER
11 2 WAS-0281 1/2 SPLITLOCKWASHER

20
2
7
8
3
1
5
6
4
9
10
HDT-1290 FLUX RECOVERY VACUUM MOUNT / EXPLODED VIEW / PARTS LIST
Item Qty Part Number Description
1 2 FAS-0235 RND HD SCR 10-24 X 1/2''
2 2 FAS-0309 HEX HD CAP SCR 1/2-13 X 1''
3 2 FAS-1330 HEXNUT10-24
4 1 HDT-1093 FLUXHOPPERVACUUM MOUNTPLATE
5 2 HDT-1102 U-BOLTW/MNTINGPLATE
6 1 HDT-1120 FLUXHOPPERVACUUMMOUNT
7 2 WAS-0230 #10 SAE FLAT
8 2 WAS-0231 #10INTERNALSTARLOCKWASHER
9 2 WAS-0280 1/2'' SAE FLAT
10 2 WAS-0281 1/2''SPLITLOCKWASHER