Wrecker spring locks

[zebedee]

Found this pic recently - '60s wrecker spring locks for side lifting. Way quicker than deploying the stabilisers when lifting to the side and when not lifting to the max. This is also done remotely with tracked crane vehicles.

Will have a look see later if the lifting eyes on the rear bogey on the 816 can be used for this mod...

 

[doghead]

A similar mechanism was used on de-icer trucks of the period.

 

[Csm Davis]

Did you ever figure out how to do this for a 816? Would help if we could just lock the rear axle. The lift point won't work.

 

[zebedee]

Did you ever figure out how to do this for a 816? Would help if we could just lock the rear axle. The lift point won't work.

Jeff - you must be clearing house! I had forgotten all about this thread! and to answer you - No I hadn't looked into this any further...

 

[73m819]

A old wrecker trick was to use DRIED OAK wedges in the rear spring pockets, this took the movement out and loaded the rear axle to move the trucks pivot point back, allowing more of a lift off the rear. When not needed, the wedges were stored on the deck.

 

[Csm Davis]

Thanks Ron I had forgotten that you and I had talked about the blocks before. Need to start a wrecker note book of tricks my memory is not so sharp anymore.

 

[gringeltaube]

Trying to follow on that... not clear where exactly that wedge would go and what it did. ... in the spring pockets??? How would that load the rear axle; and/or work in the sense of "moving the pivot point back" ?

Or would a pair of blocks go between the rear-most axle tube and frame...?

G.

 

[73m819]

Sorry, was thinking about our wreckers, yes and no, on trucks without a walking beam, a block goes between the axle and frame, on a walking beam truck, the walking beam becomes a hard mount there, in both this moves the pivot point back from the trunnion, which in by doing so gives more counter weight