Snarley:
I have to split couple, ( trailor break always on ) every time I back under before coupling suzi’s, It pushes grease from the 5th wheel onto the catwalk, pain in the …e. Some say professional companies would sack you for sliding under ! So what is the correct procedure. I have watched hundreds do it without lowering suspension.
I’m sure you have, but why would you want to copy someone who can’t be bothered to do the job right 
- Reverse under the trailer with the unit suspension down and stop well before reaching the pin
- Check trailer brake
- Connect air and electrics
- Raise the unit suspension so the trailer legs are just clear of the ground
- Reverse slowly until the fifth wheel locking mechanism clicks locked (clicks not bangs
) - Perform tug test
- Check fifth wheel has locked around pin if in any doubt and do handle pull test
- Attach dog clip if required
- Release trailer brake and wind trailer legs up
- Complete trailer vehicle check
Split coupling is safe if done right but you should always take care and think about what you’re doing otherwise it can become a dangerous way of coupling.