Here is where you will find all the fitting and maintenance instructions for all McHitch Automatic couplings, inlcudes all models: 

 

2 Tonne; AUBOR2, AUBT2, AUBOWO2

3 Tonne; AUEF35K

4.5 Tonne; AUEF45K

6 Tonne ; AUHD6K

Automatic Couplers

McHitch instructions

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