Super 30-30 Punch Head Notes Super 30-30 Punch-Head Notes
Strippit
Super 30/30   and   Custom 18/30
Punch-Head
Repair Notes

Starting about 1960,  The Strippit Co. developed their  "Improved Electro-Hydramatic"  Punch Head using a  Electric Solenoid inside Punch-Head Piston to Close the Piston-Valve for a Punch-Cycle.
New Punch-Head was used on  Strippit's   Super 30/30,   Custom 30/30,   Sonic 15B,   Sonic 18/30,  Custom 18/30,   Super 30/40-Mechanical,   Custom 30/40-Mechanical,   Super 30/30 AG (Auto-Gage),  and   Custom 18/30 AG    Single-Station Punch Machines.

Before 1960,  Strippit's Single-Station Punch Machines used Complex System of  Air-Solenoid  &  Air-Cylinder to Pull-Up a Steel-Rod that went down into Piston to Pull-Up & Close the Piston-Valve for a Punch-Cycle,  as was used on Models like   10-A,   10-AA,  15A   Punch Machines.

This  Newer  Electro-Hydramatic  Type of Punch-Head is Reliable, 
but as most of these Machines are now  30  to  60 Years Old  and 
Most Shops do Little  or  Zero Maintenance,  they of course,   Develop Problems.   Go Figure......

On this Web-Page,  I will show a few More Common Problems  and  some Repair Tips, 
But Certainly  NOT  Step-By-Step  Repair Instructions.

First!,
Review  All  the Information I have Provided on my
Super 30/30 & Other Strippit Single-Station Punch Machines
Webpage,  as there is  Much  Common  Problems  and  Repair  Information  Already  Shown there!

Second,
Buy &  Read  Maintenance Manual  if you don't have one!
1  ---  If Machine Blows a Fuse when you try to Punch,  Solenoid may have 
Burned-Out  &  "Shorted",  or   the Cables to Solenoid may have Frayed  or  come-loose
Shorting-Out to the Machine.   Some simple Ohmmeter Tests should determine what is bad here.

Most Model Machines have a  "Nibble-Mode"  Switch allowing  Continuous-Punching  which can Burn-Out Solenoids  and  is Dangerous for Operators as it makes it Easier to Punch his Fingers.
Personally,   I would un-wire the Nibble-Switch so Machine only works in Single-Punch Mode.

#49011-200  Solenoids  can also Burn-Out when Failed Switches allow  A.C.-Power  to be on Continuously,  making the Machine Punch Continuously like it's in Nibble-Mode.
As your  Knucklehead Operator  Really Doesn't Care, 
he keeps using it this way instead of having it repaired,  until  Solenoid Finally Burns-Out.

A  Good Solenoid Coil  Measures About  15   Ohms,   a Bad Solenoid Coil is
"Shorted"   Close to Zero Ohms     or    "Open"   Zillions of Ohms.  
You have to Drop the Ram-Housing  and  Rebuild Punch-Head to Replace Coil,  a Lot of Work.

Since you have the  Ram-Housing  and  Piston  out of the Machine,  
NOW  is the Time to do Other Repairs,   as it's  EASY  with the Machine Apart!!!

Start with removing the  Packing-Rings  Threaded Retaining-Ring  as shown in Bottom of Piston Photo,  and the Photo above.   As nobody but me has a Tool to Engage the 2-Holes to remove Threaded Retaining-Ring,  Everyone used a  Hammer  &  Punch  to Drive Ring 
Counter-Clockwise  to Remove,   &  Clockwise  to Tighten Ring.  

This,  of Course,  Buggers-Up  &  Ruins  the  2-Holes.
Once Ring is off,   take Ring to a Good Machine Shop and have them Drill a Couple of  Pairs of New Holes  180-Degrees apart.  There is Plenty of room to Drill several Pairs of new holes.

Then,  for Extra-Credit,  you could also have the Machine Shop make you a Tool like shown above.
This one is simply a  5/8" x 1/2" x 19"  Steel Rod  with 
2  ---   .125" Dowel Pins  sticking-up  .200"  and are  Mounted   4.550"  apart to Engage Ring-Holes.

Now Install a  NEW  Set of  Packing-Rings   from our  Head-Rebuilding  Kit,   shown Below.

If you have determined Solenoid is Bad,  the Ram-Housing will have to be Dropped-Down to gain access to Piston.   Ram-Housing is Heavy and Greasy,  so block-it up with Wood so it does Not fall as you remove Bolts & Dowel Pins.   Be Careful doing this so that you don't Smash your Fingers 
or  Damage any Machine Parts which are No longer made or available anywhere!

Cable to Handle Interlock-Switch on the Back of Ram-Housing does Not have to be removed.
Make  SURE  you don't  Damage the Interlock-Switch on the Back of Ram-Housing!

Carefully Pull the  2  Special Tapered Pull-Dowel Pins  with a Dowel-Puller so you do  NOT  Damage them!   The  2  Pull-Dowels have a  5/16" x 18  Inside-Thread  to use with  Dowel-Puller Tool.
Carefully Remove the  4  ---  1/2"-13 x 1 3/4"   S.H.C.S.  (Socket Head Cap Screws).  
Carefully Lift  Ram-Housing off Wood-Blocks and Slide it off to the Side of Table out of your way.

It is Very Difficult to work on Solenoid inside Piston while Piston is still on Machine,  so I would take Piston off Machine.   Remove the 2 Wire Connection from the Electrical Box,  make Sure you write-down what Terminals Wires went to!    Remove  5/16"-18  Set-Screw  in the Center of the Bottom
of the Connecting-Rod,  which fits into a Grove in the Center of the Wrist-Pin,  holding Pin in Place.

Swing Piston out Forward and have someone hold it there.  You can now take a Brass-Rod and
Ball-Peen Hammer and Carefully Tap the Wrist-Pin out of Piston and Connecting Rod, 
it should come-out Easily!   If NotFind-Out-Why!!!!    Don't Just Keep Hitting it with your Hammer like a Knuckle-Head!     Now you can remove Piston from Machine and Easily work on it.

Strippit used an  Expensive  Pig-Tail Cable,  in Left Photo Below,  that costs a Couple Hundred Dollars,  which is Totally unnecessary!   The Piston only has a  Very Short  5/8" Punch-Stroke
so for many years we have just used a  Straight-Cable with a  Little Slack in it.
While we are on the Subject of Cables going to Solenoid inside Punch-Piston,   Strippit seems to have used  2  main ways of Connection to Piston,  though there was probably some other
variations used over the 4-Decades Strippit built these Machines.

The  Later-Type is shown on Above Left Photo.   Top of Piston has Small Pipe-Threads in which a Pipe Stand-off  about  1 1/2" long  holds a Cord-Grip.   I don't think Stand-Off was necessary,  and I Removed Stand-Off and remounted Cord-Grip directly to Piston and added a New Straight Cable,  as shown on the Above Right.

The  Earlier-Type  using a small Military-Type Connector is shown in Above 3 photos.   There is a 
1 1/2"  Stand-Off  Pressed-in Permanently in to top of Piston.    Solenoid is Mounted inside Piston,  then  2  Shortened Solenoid wires are pulled-through Stand-Off and Carefully Soldered into Connector's bottom 2 Terminals.   Make Sure this is Soldered  Very-Well  by someone who Know's
how to Solder,   as if there is a Problem,  you will have to  Take Machine All Apart Again To Repair!!!

Connector is then mounted to top of Piston Stand-Off with  4  ---  #4-40 x 3/8"  S.H.C.S. 
Straight-Cable is wired into Electrical Box and Lower-end is plugged-in to Piston Connector.

If your Cable & Connectors are Damaged,  we have a  Kit of New Parts Available  as Shown on Upper-Left of the 3 photos Above.  
Kit Consists of  New  Straight-Cable,  New  Male  &  Female  Cable Connectors,  and the  4  S.H.C.S.

Note,   Piston in above Photo has both  Oil Breather-Baffle Plates  removed
           and   the Gits Oil-Filler Cap Broken-Off.

If your Cable & Cord-Grip are Damaged,  we have a  Kit of New Parts Available  as Shown on
Lower-Left of the 4 photos Above.   Kit Consists of  New Cable,  New Cord-Grip,  and  4
Butt-Connectors to give you 2 Extra.   Electrical Crimp-Tool is Not included.  Buy a Good Crimp-Tool
at  Lowe's  or  Home Depot.   You want Very Good Crimp Connections because if it pulls-apart,
you will have to take Machine All Apart Again To Fix It!

Shorten the long Solenoid Wires,  then Crimp-Well to new Cable.   Push Cable up through Piston.  
Mount Solenoid inside Piston with  4  ---  #8-32 x 1/2"  Socket Head Cap Screws  using a a bit of Loctite 243 Thread-Lock on screw-threads.    I  sometimes also use  #8 Flat Washers  underneath
Screw-Heads.   Use a  Long  9/64"  Allen Driver-Tool  to reach Screws,  and have a long
Magnet-Tool Ready,  to retrieve the Screws you will drop inside the Piston.

Take Cord-Grip apart,  slide Bottom Threaded-Part down the Cable and Screw it into Piston fairly tightly.   Slide Top-Part of Cord-Grip down the Cable,   position Wires & Cable inside Piston so that they are tucked out of the way,  but also they need a bit of Slack so there is No Strain on any of the Wires.   Now Tighten the Top of Cord-Grip to hold Cable Securely.

Make  SURE  you Install  4  Packing Rings  Correctly!!!
Solid-Side  of  Each Ring goes UP!      Open  Lip-Side  of each Ring goes DOWN!

Make  SURE  Retaining Ring is Screwed-On Very Tight to Compress Packing-Rings.   Use the
2 Nylon-Balls and 2 Set-Screws to Hold Ring in Place Without Buggering-Up the Threads on Piston!
And Lastly,  
It's Now  EASY  to Install our  Hook & Handle Rebuild  Kit   with the Ram-Housing off of Machine,
as shown in Above 2 Photos.    It's Easy to Drive-Out old Roll-Pins  and  Drive-In new Roll-Pins
which hold the Hooks,  because you have Lots of Room to  Align-Up Parts,  and
can Carefully Tap Roll-Pins  In  &  Out  with your  Punches  &  Ball-Peen Hammer.

Also,  
I would  Never  Punch Very Thick Material like  1/4" Steel
or   Punch High-Tonnage  Holes  with  30/30  or  18/30  Type Machines
as Sooner or Later,   you will Break the Piston,   and they are  NOT  Available Anywhere Anymore!!!
This page was last updated: April 22, 2020
Now that  Piston has been Repaired with a  New Solenoid  and  New  Packing-Ring Seals,
we  Assemble the  Ram  with  4 New Springs over the  4 Spring-Rods
and  Slide Ram  back into  Punch Housing.

Keep the Ram,  Inside  &  Outside   AND   Ram-Housing,  Inside  &  Outside,   Very Clean!

Coat the  Inside of  Ram-Housing with Grease,   I like  Full-Synthetic   Mobilith  SHC 220  Grease
as it stays Stable,  Without Deteriorating,  Much Longer than Standard Cheap Greases.

Coat the  Outside of  Ram  with Grease.

Tip!    Putting a  Blob of Grease on End of 4 Springs will keep them from falling-off  Spring-Rods
when you go to insert  Ram  back into  Ram-Housing.

Make Sure  you have the  Pin on Ram  Lined-Up   with  Groove  inside  Ram-Housing!

When finally installed back on Machine, 
Pump a Lot of Grease into the  2 Ram-Housing Grease-Fittings.
And also Grease the  Crankshaft Bearings  and the  Pitman Bearing.
Here's what Happens when you
Don't Use a Good  Full-Synthetic  Grease!

I Guess this is  40-Year Old Grease,   but   it was  like  Chunks of Dry Asphalt!
Ram should easily be pushed-out by hand,  after Snap-Ring is Removed.
I had to Start Pushing  Punch-Ram out of Ram-Housing on my  Hydraulic Arbor Press
then  finished-up by Pounding Out Ram with my Large Brass Hammer!

And of Course,   All  4  Ram-Springs were Broken into Pieces.
Unfortunately,   Broken  Ram-Springs  is a  Normal Problem 
as  Strippit did a Poor-Job of Designing the  Ram-Spring  &  Space for the Ram-Springs.

We have been working with  Spring-Engineers,  and will have
New  Custom-Made  Ram-Springs  Available   End of January 2020
which should  Last-longer  &  Work-Better  than the Original Ram-Springs.