CMP pintle hooks

[Rob Beale]

I have noticed that CMP trucks have the pintle hook mounted in a variety of ways:

* some have leaf springs between cast brackets at the end of the chassis:
* some are in line with the chassis rails,
* others are below the chassis rails.

* I have seen some bolted directly to the rear cross member, and others with a coil spring on a fabricated frame below the chassis.

Can anyone clarify for me whether there is a pattern to all this?

eg Ford vs Chev, or 16 inch rims vs 20 inch, or vehicle weight or role??

Rob
C8AX Ambulance