Greasing problem

[luftwaffe]

yeah try brushcutters idea. you could remove the spherical bearing by circlip pliers and give it a goof clean, then refit and try.

[Woodworks]

Has the pin been put in and then the metal guard been welded on to stop it coming out? It looks like the one side has a shoulder on it so it has to come out the side of the welded on plate.

 

Dont see any evidence of welding. The other end looked the same and just drove out. It is slightly flared on one end as in pic 1

[Wood wasp]

It's not a big pin or ram nor look too old so it shouldn't really be giving grief.

 

That retaining pin wouldn't stop main pin from working its way out same side so there's either another pin or shoulder against that plate which stops the main pin from turning, that would be unusual as normally a feature like that works with an oversize head, not a checked main pin.. Hope that makes sense?

 

What side are you hitting it from?

[Brushcutter]

Hot air gun might work. May take a while to get up to temperature. Blow lamp would be better, just heat it up evenly to prevent warping.

 

As for the big pin you could use a hydraulic pin puller if you have one. Failing that heat the outside of the pin hole and punch the pin out with a drift and 4 lb club hammer. Just make sure you've got the boom supported

[Woodworks]

It's not a big pin or ram nor look too old so it shouldn't really be giving grief.

 

That retaining pin wouldn't stop main pin from working its way out same side so there's either another pin or shoulder against that plate which stops the main pin from turning, that would be unusual as normally a feature like that works with an oversize head, not a checked main pin.. Hope that makes sense?

 

What side are you hitting it from?

 

 

The pin has a slightly flared head in Pic 1

 

Hitting pin on pic 2

[Wood wasp]

Normally with setup like that you hit from the other side as checked side is actually an oversized head welded on, then a flat edge ground off.

 

If it was the actual body of the pin which had been checked then there would be oversized head welded on other side.

 

Is the checked side of pin same diameter as the other side?

 

The retaining pin on yours isn't doing anything unless as Phil says the flat plate been welded on after pin in place.

[Woodworks]

Normally with setup like that you hit from the other side as checked side is actually an oversized head welded on, then a flat edge ground off.

 

If it was the actual body of the pin which had been checked then there would be oversized head welded on other side.

 

Is the checked side of pin same diameter as the other side?

 

The retaining pin on yours isn't doing anything unless as Phil says the flat plate been welded on after pin in place.

To be honest you have lost me a bit there. I can check the diameters tomorrow with a vernier gauge. Don't see why this one should be different to the other end of the ram though. They certainly look the same but probably not safe to presume they are same as did not budge when hit.

[Woodworks]

Going to give heating it a try. I only want to grease it for the time being so no need to remove the ram if I can get grease into the bearing. If this fails will give Fuelwood a call to double check on the pin design and then try and track down a hydraulic pin puller.

[Wood wasp]

Yes I didn't explain too well! The flat plate is to stop the pin rotating and wearing the mountings on actual crane, usually works with basically a big heavy duty "washer" welded onto end of pin, said washer gets bit ground out of it to match flat plate. Other end of pin has hole drilled through it (or may be threaded, or may have plate with bolt etc etc.. Basically just something so that it can't work its way out)

 

So fitting new pin consists of chapping it in until fully home whilst ensuring the two flat edges meet, drop a retaining pin through hole (or bolt/plate etc)in other end of main pin and job done.

 

Check diameters tomorrow and also that no pin still in somewhere

[Wood wasp]

Going to give heating it a try. I only want to grease it for the time being so no need to remove the ram if I can get grease into the bearing. If this fails will give Fuelwood a call to double check on the pin design and then try and track down a hydraulic pin puller.

 

 

If you can get grease into bearing then you don't have a problem, if you can't then you will wear pin and eye of the ram. You don't need a pin puller, at worst you'll need to grind off that wee flat plate