Pup Tongue

[Brandt]

My service air line has separated inside of my tongue. Are these "trouble windows" meant to be removed for just such an incident?? Do I just grind the welds and take off the window? If there is another way to get 22' of air hose snaked though the tongue, I'm all ears.

 

[crane operator]

I would say those are fish plates/ reinforcement plates. They either bent it, or welded 2 pieces together.

A electricians fish tape will get your air line through there.

 

[Deere500a]

If one failed it maybe time to replace the other. Tape new hoses together thread new hose on to old E side & pull'em through.

 

[Brandt]

Good point. I only have 26’ of hose, so I’ll have to get more.

 

[DDoug]

Don't forget the electricians trick, use a shop vac, and piece of string with
a plastic bag knotted on the end.

I like plastic baler twine, cheap and strong.

 

[Brandt]

You’re gonna have to explain that one to me. Shop vac?? How do I use a shop vac to pull hose??

 

[Deere500a]

It's a electrician trick for blowing sting in pipes to feed pull rope though for a wire pull not 8" square tubing

 

[DDoug]

It's a electrician trick for blowing sting in pipes to feed pull rope though for a wire pull not 8" square tubing

It worked just fine on 6" corrugated pipe, it should work on 8" square tubing, use more walmart plastic bags on the string.

and it sucks it thru, not blown thru.

 

[DDoug]

You’re gonna have to explain that one to me. Shop vac?? How do I use a shop vac to pull hose??

You pull in a string first...baler twine works well.

 

[AMBMike]

As a former electrician I can confirm a shop vac works well to install pull string.
In my experience a simple plastic grocery bag is the best. My boss had bought several sets of Greenlee pulling plugs for various conduit sizes but after trying them multiple times we went back to the bags. If one isn't enough use a bigger bag or two or more.

It works either blowing or vacuum, in my experience using vacuum was more reliable. We have at times done both in tandem.

(Then there was the time the farmer/customer installed the conduit himself to "save money"... We ended up using his vacuum manure tank... Not a good day...)

I don't know what the pup tongue looks like internally but if there are other hoses, wires, etc a shop vac is unlikely to work.

 

[Camshawn]

I found “mice” work best for blowing or sucking string into pipes under 1 1/4”. The bags for bigger pipe. So many variables though. A big compressor and a bag works well for street lights. A compressed air bottle on a 60’ 3/4” pipe can really hurt if your hand is in the way at the exit.