Hougen-Ogura 0755101 User manual

75005 PUNCH PRO™
ELECTRO-HYDRAULIC HOLE PUNCHER
operator’s manual
COVERS HOLE PUNCHER PART NUMBERS 0755101 & 755201

2
IMPORTANT SAFETY INSTRUCTIONS
WARNING: When using electric tools, basic safety precautions should always be followed to reduce the
risk of re, electric shock, and personal injury, including the following.
5. Consider Work Area Environment
Do not expose tool to rain
Do not use tool in damp or wet
locations. Keep work area well lit.
Donotusetoolinpresenceofammable
liquids or gases.
6. Guard Against Electric Shock
Preventbodycontactwithgroundedsur
faces. For example: pipes, radiators, ranges,
refrigerator enclosures.
7. Keep Children Away
Do not let visitors contact tool or extension
 cord.Allvisitorsshouldbekeptawayfrom
work area.
8. Store Idle Tools
 Whennotinuse,toolsshouldbestoredina
dryhighorlocked-upplace-outofreachof
children.
9. Do Not Force Tool
Itwilldothejobbetterandsaferattheratefor
whichitwasintended.
10. Use Right Tool
Donotforcesmalltoolorattachmenttodothe
jobofaheavy-dutytool.Donotusetoolfor
purpose not intended.
11. Dress Properly
Donotwearlooseclothingorjewelry.Theycan
becaughtinmovingparts.Rubberglovesand
nonskidfootweararerecommendedwhen
workingoutdoors.Wearprotectivehaircovering
tocontainlonghair.
12. Always wear safety glasses or goggles.
13. Do Not Abuse Cord.
Nevercarrytoolbycordoryankitto
disconnect from receptacle. Keep cord from
heat,oilandsharpedges.
2b. Extension Cords
Useonly3-wireextensioncordsthathave
3-pronggroundingtypeplugsand3-pole
receptaclesthatacceptthetool’splug.
Replace or repair damaged cords.
Makesuretheconductorsizeislargeenough
to prevent excessive voltage drop will cause
lossofpowerandpossiblemotordamage
3. FOR ALL DOUBLE-INSULATED TOOLS
Whenservicinguseonlyidenticalreplace-
ment parts.
4. Keep Work Area Clean
Clutteredareasandbenchesinviteinjuries.
1. READ ALL INSTRUCTIONS
2. Grounding Instructions
2a. Thistoolshouldbegroundedwhileinuseto
protecttheoperatorfromelectricshock.The
toolisequippedwitha3-conductorcordand
3-pronggroundingtypeplugtottheproper
groundingtypereceptacle.Thegreen(or
greenandyellow)conductorinthecordisthe
groundingwire.Neverconnectthegreenor
greenandyellowwiretoaliveterminal.If
yourunitisforuseon115V,ithasaplugthat
lookslikethatshowninsketch(A).Anadapter,
seesketches(B)and(C),isavailablefor
connectingsketch(A)typeplugsto2-prong
receptacles.Thegreen-coloredrigidear,lug,or
thelikeextendingfromtheadaptermustbe
connectedtoapermanentground,suchasa
properlygroundedoutletbox.
NOTE: Use of a grounding adapter is pro-
hibited in Canada by Part 1 of the Canadian
Electrical Code.
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V511
)spmA( .TF52.TF05.TF001.TF051.TF002.TF052.TF003
6-5 8161412101018
8-6 816121010186
01-8 81412101886
21-01 6141018866
41-21 6121018666
61-41 6121018664

3
TheHougen-OguraElectro-hydraulicHolePuncher
isanintegratedunit,containingtheelectric
motor,hydraulicpump,and"C"-framepunching
unit.Ituseshydraulicpowertoforcethepunch
throughtheworkpiece,andastrongspringtoreturn
thepunchpistontoits"home"position.Thepatented
designincludesanautomaticvalvethatreleasesthe
hydraulicpressurewhenthepunchpistonisatthe
bottomofitsstroke.Theautomaticvalveremains
openuntilthepunchpistonhasfullyreturnedtothe
homeposition.
Asaresultofthisdesign,thepistonwillnotreturnto
itshomepositionautomaticallyunlessthefullstroke
hasbeencompleted.Also,thepunchwillnotbegin
anotherstrokeunlessthepunchhasfullyreturned
tothehomeposition,resettingtheautomaticvalve.
Toallowthepunchpistontobemanuallyreturned
intheeventthatthepunchcycleisstoppedpriorto
completion, a manual return valve is provided.
PRINCIPLES OF OPERATION
CAUTION! To prevent electric
shock,donotusepowertools
nearwetareas,orwherepower
toolmaybecomewet.
Alwaysweareyeprotectionwhile
usingpunchingtools,orinthe
vicinityofpunching.
CAUTION!Theslugisejectedat
theendofthepunch.Donotaim
theunitsothatejectedslugmay
hitsomeonearound,orbelow
you.
SAFETY FIRST
CAUTION!Riskofpinchingor
crushing.Keepawayfrommov-
ingpartswhenunitisinuse.
Oil Port
Manual Return
Valve
“C” Frame
Hole Locator
Gauge
Work Stand
Die
Punch
Aux. Handle

4
Read,understandandfollowallsafetyinstructionsand
operatingprocedures.Ifyoudonotunderstandthe
instructions or if conditions are not correct for proper
operation,donotoperatethemachine.Consultyour
supervisororotherresponsibleperson.
*Checkthatthetriggerswitchisnotlockedon.
*Checkthatthemanualreturnvalveisclosed.
*Makesurethattheproperpunchanddieareinstalled
correctly.SeeDie Selection and Proper Punches and
Dies on next page.
*Ifyouareusingtheholelocatorgauge,adjustittothe
proper distance. See Hole Locator Gauge Adjustment
on next page.
OPERATING PROCEDURES
*Plugthepowercordintotheproperpowersupply.
*Positionthepuncherattheproperlocationonthe
workpieceusingtheholelocatorgageorbylocatingthe
pointontheendofthepunchintoacenterpunchmarkon
thepiece.
Witheverythinginproperorder,theswitchcanbeactivated
tostarttheelectricmotor.Thepunchpistonwillmoveout
andpushthepunchthroughthematerial.Keeptheswitch
onuntilthepunchhasreachedtheendofitsstrokeand
stops.Releasetheswitch.Theautomaticreturnvalvewill
openattheendofthestrokeallowingthepunchpistonto
retracttoitshomeposition.Thepunchpistonmustreturn
completelybeforeanotherholecanbepunched.
Ifthepunchstopsinthemidstofitsstrokeordoesnot
comeoutofthematerial,openthemanualreturnvalve.
Oncethepunchpistonhasreturnedtoitshomeposition,
tightenthemanualreturnvalve.
Althoughthefootswitchisguardedagainstinadvertent
operation,itisbesttopositionthefootpedalawayfrom
normalstandingposition.Placeitinapositionthat
requiresdeliberateefforttoreachandactivatetheswitch.
Thetriggerswitchshouldbelockedononlywhenready
topunch.Releasethetriggerswitchimmediatelyafter
punchingtopreventoperationbyinadvertentactuationof
thefootswitch.
INSTRUCTIONS -- FOOT SWITCH
WARNING! Failure to check punch retaining nut periodically during use, can result in
personal injury or damage to the unit could occur.
75005 CONTENTS
HydraulicOil 75377
13/16"DiameterPunch 75539
13/16"DiameterDie-TypeB-Formaterial1/4"to3/8" 75556
13/16"DiameterDie-TypeA-Formaterial1/8"to1/4" 75555
Pin Spanner 75772
HookTypeSpannerWrench 75773
FootSwitch(115V) 75110
FootSwitch(230V) 76479
FootSwitch(230V,TypeI) 76480
Work Stand 75311
M4HexKey 75743
M5HexKey 75744
M6HexKey 75745
M8HexKey 75746
M10HexKey 75747

5
Allmodelscanbeusedwithanaccessoryworkstandfor
benchortablemountingoftheHolePuncher.Thestand
isstandardwithallmodels.Toinstallthestand,rst
unplugthepowercord.,thenmounttheunittothestand
withthesuppliedhardware.
Whenusingthestand,periodicallychecktomakesurethat
thepunchedmaterial(slugs)arenotstackingupbetween
theexitholeinthe"C"-frameandthestand.Keepthisarea
clear of accumulated slugs.
USING THE WORK STAND
SELECTING PROPER DIES
Properdieselectionisessential.Otherthantheobvious
necessityofmatchingshapedpunchesanddies,thereare
twootherbasicselectionfactorsthatmustbeconsidered.
Therstisdieclearance.Differentmaterialtypesand
differentmaterialthicknessesrequiredifferentclearances
betweenthepunchanddie.Inordertomaintainthebest
possibleholewhileremainingwithinthetonnage
capacityofthemachine,itisessentialtochoosethedie
withtheproperclearance.Thesecondisthedieangle.
Moststructuralshapescanbepunchedwiththestandard
atdies,but"I"-beamsandmostchannelswhich
havea2-in-12taperrequiretheuseofspecial
9-1/2degreeangleddies.Carandshipchannel
angesandotherstructuralshapeswitha2degree
tapercanbepunchedwithatdies.Materialswith
aangetaperoflessthan5degreescanalsobe
punchedwiththeatdie,however,theholewillbe
slightlyangled.Refertospecicinformationand
tableswithinthismanualfortheproperpunchand
diecombination.
TheHolelocatorGaugecanbesettoholdtheHole
Punchesataconstantdistancefromtheedgeofthe
workpiece.Thegaugeisheldinplacebyoneortwosocket
headcapsscrews.Beforemakinganyadjustment,
rst,unplugthepowercord.Toadjustthepositionofthe
gauge,loosenthecapscrew(s),tapthegaugeintothe
desiredpositionandretightenthecapscrew(s).
HOLE LOCATOR GAUGE ADJUSTMENT
Hougen-Ogura Punches are designed to be used in
Structural Steel. If used in harder or higher tensile
strength materials, performance will be impeded and
serious damaged could occur to your unit.

67
74
90
25
3
58 57 33-14
33-15 33-2
43 60
37 40
33-3
33-6
33-1
33-7
33-8
33-9
65
81
80
65
33-17
33-19
88
59
58
33-7
33-8
33-9
33-18
33-19 82 65
33-4
33-16
33-21
86
33-22
33-12
33-11
33-5
69
70
33-20
30
74
29
28
61 32
56
56
31
72
9
44
8
45
45
1
73
73
74
74
75
75
6
48 47
71
10
71 10 7 34 35 15
52
24
55
13
68
26
55
27
36
4 10
11
12
54
66
22
22
22
2
16
21-2
18
17
19
20
53
38
14
49
50
42
41
39
23
23
6
75005 EXPLODED VIEW

PARTS LIST - 75005
7
Item Part # Description Qty
175260 “C” Frame 1
275323 Cylinderw/chamfers 1
375262 Pump Housing 1
475263A PunchPiston 1
675264 Hole Locator 1
775265 Stripper 2
875539 Punch13/16”Dia. 1
975555 Die13/16”AType 1
10 75266 Release Valve 1
11 75267 Valve Return Spring 1
12 75268 Stop Plate 1
13 75269 Valve Release Spring 1
14 75046 Return Valve 1
15 75047 Return Lever 1
16 75270(A-J) Pump Piston 3
17 75325 RubberPackingw/groove 3
18 75050 CheckValve 3
19 75326 O-Ring 3
20 75052 CheckValveSpring 3
21-1 75340 Piston Return Spring 3
21-2 75341 Piston Return Spring 3
22 75054 Magnet 3
23 75271 Spacer 2
24 75272 O-Ring 1
25 75273 Gasket 1
26 75274 PunchReturnSpring 1
27 75275 PunchPistonKey 1
28 75136 Screw Bladder 1
29 75137 Oil Bladder 1
30 75138 Bladder Retaining Screw 1
31 75063 PunchHandle 1
32 75276 Bladder Cover 1
33-1 75277 Motor Housing 1
33-2 75278 Field(115V) 1
76475 Field(230V) 1
33-3 75279 Armature(115V) 1
76474 Armature(230V) 1
33-4 75280 SwitchCover 1
33-5 75365 Switch 1
33-6 75281 Ball Bearing 1
33-7 75282 BrushCover 2
33-8 75283 CarbonBrush(Pair) 1
33-9 75284 BrushCap 2
33-11 75074 StrainRelief(115V) 1
76446 StrainRelief(230V) 1
33-12 75148 PowerCord(115V) 1
76476 PowerCord(230V) 1
76478 PowerCord(230V,TypeI) 1
33-14 75285 Hex Head Bolt 2
33-15 75150 HeliLockWasher 2
33-16 75286 Pan Head Screw 2
33-17 75287 MotorTopGrill 1
Item Part # Description Qty
33-18 75288 MotorSideGrill 1
33-19 75289 Pan Head Screw 4
33-20 75290 Adapter Plate 1
33-21 75291 SwitchBracketGasket 1
33-22 75292 Slotted Retainer 2
34 75293 Back up Ring 1
35 75294 Rod Seal Packing 1
36 75295 Packing 1
37 75296 Oil Seal 1
38 75085 O-Ring 1
39 75086 Ball Bearing 1
40 75297 Ball Bearing 1
41 75088 Roller Bearing 1
42 75298 Retaining Ring 1
43 75090 WasherSeal 1
44 75299A PunchRetainingNut 1
45 75300 Soc. Set Screw 1
47 75301 Soc. Head Screw 1
48 75302 FlatWasher 1
49 75303 Soc. Head Screw 8
50 75304 FlatWasher 8
51 75305 Spanner Nut 1
52 75306 Backup Ring 1
53 75100 Roll Pin 1
54 75105 FlatWasher 3
55 75307 Soc. Head Screw 3
56 75103 Soc. Head Screw 2
57 75236 Soc. Head Screw 1
58 75093 HeliLockWasher 5
59 75308 Soc. Head Screw 1
60 75107 Soc. Head Screw 1
61 75309 O Ring 1
65 75109 Rivet 10
66 75110 FootSwitch(115V) 1
76479 FootSwitch(230V) 1
76480 FootSwitch(230V,TypeI) 1
67 75311 Work Stand 1
68 75312 O Ring 2
69 75313 Soc. Head Screw 4
70 75097 FlatWasher 4
71 75314 Soc. Head Screw 4
72 75315 EyeBolt 1
73 75316 Soc. Head Screw 2
74 75155 HeliLockWasher 4
75 75317 FlatWasher 2
80 75033 Warning Tag 1
81 75034 Caution Tag 1
82 75031 Name Tag 1
86 75350 Pan Head Screw 1
88 75318 Soc. Set Screw 2
89 75247 Pan Head Screw 2
90 75226 Soc. Head Screw 1

PUNCHES AND DIES FOR 75005
8
Punch-Pro
™
— Model 75005
ROUND PUNCH MATERIAL DIE
Size Part
No. Thickness Style Size Part
No.
Nominal Actual Metric
7/16" .433 11mm 75532
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 7/16 A 75541
>1/4 (.250)
to 3/8 (.375) F, A, H Die 7/16 B 75542
5/16 (.312)
max. C Die 7/16 C 75559
15/32" .472 12mm 75937
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 15/32 A 75939
>1/4 (.250)
to 3/8 (.375) F, A, H Die 15/32 B 75940
5/16 (.312)
max. C Die 15/32 C 75941
1/2" .512 13mm 75533
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 1/2 A 75543
>1/4 (.250)
to 3/8 (.375) F, A, H Die 1/2 B 75544
5/16 (.312)
max. C Die 1/2 C 75560
9/16" .551 14mm 75534
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 9/16 A 75545
>1/4 (.250)
to 3/8 (.375) F, A, H Die 9/16 B 75546
5/16 (.312)
max. C Die 9/16 C 75561
5/8" .625 15.9mm 75535
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 5/8 A 75547
>1/4 (.250)
to 3/8 (.375) F, A, H Die 5/8 B 75548
5/16 (.312)
max. C Die 5/8 C 75562
11/16" .688 17.5mm 75536
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 11/16 A 75549
>1/4 (.250)
to 3/8 (.375) F, A, H Die 11/16 B 75550
5/16 (.312)
max. C Die 11/16 C 75563
23/32" .709 18mm 75938
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 23/32 A 75942
>1/4 (.250)
to 3/8 (.375) F, A, H Die 23/32 B 75943
5/16 (.312)
max. C Die 23/32 C 75944
3/4" .750 19mm 75537
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 3/4 A 75551
>1/4 (.250)
to 3/8 (.375) F, A, H Die 3/4 B 75552
5/16 (.312)
max. C Die 3/4 C 75564
25/32" .787 20mm 75538
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 25/32 A 75553
>1/4 (.250)
to 3/8 (.375) F, A, H Die 25/32 B 75554
5/16 (.312)
max. C Die 25/32 C 75565
13/16" .812 20.6mm 75539
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 13/16 A 75555
>1/4 (.250)
to 3/8 (.375) F, A, H Die 13/16 B 75556
5/16 (.312)
max. C Die 13/16 C 75566
7/8" .875 22.2mm 75540
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 7/8 A 75557
>1/4 (.250)
to 3/8 (.375) F, A, H Die 7/8 B 75558
5/16 (.312)
max. C Die 7/8 C 75567
OBLONG PUNCH MATERIAL DIE
Size Part
No. Thickness Style Size Part
No.
Nominal Actual Metric
7/16"
x
5/8"
.433
x
.650
11mm
x
16.5mm
75690
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 7/16 x 5/8 A 75694
>1/4 (.250)
to 3/8 (.375) F, A, H Die 7/16 x 5/8 B 75695
5/16 (.312)
max. C Die 7/16 x 5/8 C 75702
1/2"
x
3/4"
.512
x
.768
13mm
x
19.5mm
75691
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 1/2 x 3/4 A 75696
>1/4 (.250)
to 3/8 (.375) F, A, H Die 1/2 x 3/4 B 75697
5/16 (.312)
max. C Die 1/2 x 3/4 C 75703
9/16"
x
13/16"
.551
x
.827
14mm
x
21mm
75692
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 9/16 x 13/16 A 75698
>1/4 (.250)
to 3/8 (.375) F, A, H Die 9/16 x 13/16 B 75699
5/16 (.312)
max. C Die 9/16 x 13/16 C 75704
11/16"
x
13/16"
.709
x
.827
18mm
x
21mm
75693
>1/8 (.125) to 1/4 (.250)
10 to 3 GA. F, A, H Die 11/16 x 13/16 A 75700
>1/4 (.250)
to 3/8 (.375) F, A, H Die 11/16 x 13/16 B 75701

9
TROUBLE SHOOTING
MELBORP ESUAC NOITULOS
TUBSNURROTOM
SEODNOTSIPHCNUP
TUOEMOCTON
NEPOSIEVLAVNRUTERLAUNAM EVLAVNRUTERLAUNAMESOLC
TNEICIFFUSNISILIOLIODDA
DENRUTERTONSAHNOTSIP
EMOHSTIOTYLETELPMOC
,SPIHCLEETSOTEUDNOITISOP
EHTNOSIRBEDREHTOROTRID
REDLOH-HCNUPDESOPXE
.NOITISOP
DESOPXEMORFSIRBEDNAELC
FONOITROPREDLOH-HCNUP
NOTSIPHCNUPHSUP.DORNOTSIP
.NOITISOPEMOHSTIOTKCAB
SIGNIRPSNRUTERNOTSIPHCNUP
DORHCNUPNRUTEROTKAEWOOT
EHTYBDECIVRESENIHCAMEVAH
YROTCAF
SEMOCNOTSIPHCNUP
GNIHCNUPTUB,TUO
KAEWOOTSIREWOP
HCNUPOT
TONSIEVLAVNRUTERLAUNAM
DESOLCYLETELPMOC EVLAVNRUTERLAUNAMESOLC
SIRIAROTNEICIFFUSNISILIO
RIOVRESERNIDEPPART LIODDA
STRAPNOTSIPROPMUPLANRETNI
DEGAMADROYTRID,NROWERA
YLREPORPGNINOITCNUFTONDNA
EHTYBDECIVRESENIHCAMEVAH
YROTCAF
TONSEODROTOM
ROOPROETATOR
ROTOMFONOITATOR
TIUCRICREWOPNEPO ,DROCNOISNETXE,GULPKCEHC
REKAERBTIUCRIC
EGATLOVREPORPMIECRUOSREWOPKCEHC
PORDEGATLOVEVISSECXE
FOERASDROCNOISNETXE
EHTROFEZISERIWTNEICIFFUSNI
.DROCEHTFOHTGNEL
ROSDROCDEGAMADRONROW
.SEHSURBNOBRACNROW.SGULP
STRAPROTOMLANRETNIDEGAMAD
EHTYBDECIVRESENIHCAMEVAH
YROTCAF
NEEWTEBGNIKAELLIO
DNAEMARF"C"
NEEWTEBROREDNILYC
PMUPDNAREDNILYC
GNISUOH
THGITTONERASTLOBSTLOBNETHGIT
DEGAMADSITEKSAG EHTYBDECIVRESENIHCAMEVAH
YROTCAF
DNUORAGNIKAELLIO
MORFRONOTSIP
AERALANRETNI
SECAFRUSROSLAESLANRETNI
KCASRELEVELLIO.DEGAMADERA
NEKORBSI
EHTYBDECIVRESENIHCAMEVAH
YROTCAF
TONSEODHCNUP
FOTUOPIRTS
RETFAECEIPKROW
GNIHCNUP
NROWSIEIDROHCNUPECALPER
ROLAIRETAMROFEIDREPORPMI
SSENKCIHT
DNAHCNUPREPORPROFKCEHC
NOITCELESEID
HTOBREDNUTONSAWECEIPKROW
ROGNIDNIBSIDNASREPPIRTS
HCNUP
SILAIRETAMEHTTAHTERUSEKAM
GNIHCNUPEHTNIDETAESYLLUF
AERA

10
NOTE: The internal components of the pump and piston area have very close clearances and are sensitive
to damage from dust, dirt, contamination of the hydraulic uid or improper handling. The disassembly of the
pump housing requires special tools and training, and should be attempted by a qualied repair person. The
improper servicing of electrical components can lead to conditions that could cause serious injury.
ANY ATTEMPT BY UNAUTHORIZED PERSONNEL TO SERVICE THE INTERNAL COMPONENTS OF
THE PUMP AREA WILL VOID THE WARRANTY.
Inordertoinsuresmootheroperationandlongerlifeofyour
holepuncher,thefollowingmaintenanceshouldbedone
periodically,basedonuse.
1. Keepthemachineclean.Itisespeciallyimportantto
keeptheslidingportionofthepunchpistonfreefrommetal
chips,scale,dirt,dustorotherdebris.Tocleanthepunch
piston,turnontheswitchtomovethepunchpistonalmost
tothebottomofitsstroke.Ifnecessary,cyclethepunch
severaltimestodeterminewherethebottomofthestroke
is,andtocorrectlypositionthepunchpiston.
Unplugthepowercord.Wipeanydebrisfromtheex-
posedpartofthepunchpiston.
2. Regularlytightenallfastenersandreplaceany
worn components.
3. Checkpowercord,ifcrackedorfrayed,returnthe
machinetoanauthorizedrepaircenterfor
replacement.
4. Checkoillevel,carefullyusingtheprocedurebelow.
ADDING OIL
4. Carefullyopentheoilportbyremovingthesocket
headcapscrew.
5. Usingthesmallsqueezebottlesuppliedwiththe
HolePuncher,carefullyaddhydraulicoiltocompletely
llthereservoir.RocktheHolePuncherbackandforth
slightlyseveraltimestofreeanytrappedairbubbles,
thenaddadditionaloilifnecessary.
6. Replacethecapscrewandwipeupanyexcessoil.
7. CycletheHolePuncherseveraltimeswiththe
ManualreturnValveopen,andagainwiththevalve
closed,toworkanytrappedairoutofthesystem,
thenrepeattheaboveprocedure,makingsurethatthe
punchpistonisalmostatthebottomofthestroke
beforeremovingthecapscrewfromtheoilport.
8. Addadditionaloilasnecessary.Iftheunitwas
extremelylowonoil,itmaybenecessarytorepeat
theprocedureseveraltimes.
MAINTENANCE
HELPFUL HINTS FOR HOLE PUNCHING
Eachofthepunchesisprovidedwithasharppointatits
center.Iftheholelocationsarecenterpunched,thepoint
ontheendofthepunchmaybeusedto"nd"thecenter
punchedspot.
Also,foraccurateandeasypositioningofthepunchtoa
holelocation,theswitchcanbeintermittentlypulsedon
andofftojogthepunchdowntotheworksurface.
Ifthepositionisnotsatisfactory,openthemanualreturn
valvetoretractthepunchforanotherattempt.This
operationcanalsobeperformedwiththemanualreturn
valve"cracked"openslightlytopreventfullpunching
pressurefrombeingdeveloped.Inthismanner,the
punchcanbeeasilybroughtrightdowntothesurface
withoutbeginningtopunchthehole.Ifthelocationis
satisfactory,closethevalveandnishtheoperation.
Useofthecorrecthydraulicoilisessential.Approvedoils
areShell"TELLUSOil"andExxon"TERESSTIC"(Part
No.75377).Grade#32viscositymustbeused.Checkthe
unitspecications.Makesurethattheworkareaandall
equipmentarecleansothatnodirt,dustorotherforeign
materialcangetintothehydraulicoilorpumparea.
1. Locatethesocketheadcapscrewthatplugstheoilport.
Itisjustabovethemanualreturnleverontherighthand
sideoftheHolePuncher.
2. LaytheHolePuncheronitsleftsidesothattheoilport
is facing up.
3. Turnontheswitchtomovethepunchpistonalmost
tothebottomofitsstroke.Ifnecessary,cyclethepunch
severaltimestodeterminewherethebottomofthestroke
is,andtocorrectlypositionthepunchpiston.Inthisposi-
tion,themaximumamountofoilhasbeendrawnfromthe
pumpandthecorrectllcanbeobtained.
WARNING! Failure to check punch retaining nut periodically during use, can result in
personal injury or damage to your unit.