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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 fluid or improper handling. The disassembly of the  

pump housing requires special tools and training, and should be attempted by a qualified 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

fill 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 "find" the center

punched spot.

Also, for accurate and easy positioning of the punch to a

hole location, the switch can be intermittently pulsed on

an 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 

satidfactory, close the valve and finish 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 specifications. 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 fill can be obtained. 

WARNING! Failure to check punch retaining nut periodically during use, can result in

personal injury or damage to your unit.

Summary of Contents for 0756102

Page 1: ...operator s manual COVERS HOLE PUNCHER PART NUMBERS 0756102 0756202 75006PR PUNCH PRO ELECTRO HYDRAULIC HOLE PUNCHER OM75006PR1114 Printed in U S A ...

Page 2: ...power cord Never carry battery charger by its power cord or pull on the cord to disconnect it Keep cord away from heat oil and sharp objects Place cord so that it will not be stepped on tripped over or otherwise subjected to damage or stress If the tool is dropped or struck check carefully that the body is not damaged cracked or deformed 14 Do not overreach Keep proper footing and balance at all t...

Page 3: ...n 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 po...

Page 4: ...he 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 v...

Page 5: ...ity of matching shaped punches and dies there are two other basic selection factors that must be considered The first 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 prop...

Page 6: ... 6 75006PR EXPLODED VIEW ...

Page 7: ...Return 1 56 75160 SCR SOC Set M6 x 8mm 2 57 75046 Return Valve 1 58 75085 O Ring 1 59 75100 Pin Roll 4 x 20mm 1 60 76520 SCR SOC Set M6 x 8mm 6 Det Part Description Qty 61 76521 Ball Steel 3 16 6 62 76522 SCR SOC Set M5 x 6mm 3 63 76523 Stop Ring 1 64 75086 Bearing Ball 1 65 75271 Needle Holder 2 66 75088 Bearing Needle 1 67 75298 Ring Retaining 1 68 76524 Liner 1 69 76525 Pump Case 1 70 75107 SOC...

Page 8: ...25 32 SB 75601 5 16 312 Max Die 25 32 CC 75626 13 16 812 20 6mm 76366 5 64 078 to 1 8 125 14 to 11 GA Die 13 16 SA 75604 5 64 078 to 1 2 512 14 to 3 GA Die 13 16 SB 75605 5 16 312 Max Die 13 16 CC 75628 7 8 875 22 2mm 76367 5 64 078 to 1 8 125 14 to 11 GA Die 7 8 SA 75608 5 64 078 to 1 2 512 14 to 3 GA Die 7 8 SB 75609 5 16 312 Max Die 7 8 CC 75630 15 16 938 23 8mm 76368 5 64 078 to 1 8 125 14 to ...

Page 9: ... R O E T A T O R R O T O M F O N O I T A T O R T I U C R I C R E W O P N E P O D R O C N O I S N E T X E G U L P K C E H C R E K A E R B T I U C R I C E G A T L O V R E P O R P M I E C R U O S R E W O P K C E H C P O R D E G A T L O V E V I S S E C X E F O E R A S D R O C N O I S N E T X E E H T R O F E Z I S E R I W T N E I C I F F U S N I D R O C E H T F O H T G N E L R O S D R O C D E G A M A D...

Page 10: ...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 ...

Page 11: ... 11 NOTES ...

Page 12: ...y from state to state To obtain warranty service return the item s transportation prepaid to your nearest Factory Authorized Repair Center or to Hougen Manufacturing Inc 3001 Hougen Drive Swartz Creek Michigan 48473 Hougen Drills and Cutter are warranted against manufacturing defects only Subject to Hougen Manufacturing inspection THIS WARRANTY IS IN LIEU OF ANY OTHER WARRANTY EXPRESSED OR IMPLIED...

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