Note: If a 4.5t Couping has no D-Value, it is not road legal.
If your 4.5t electric coupling starts to feel ‘loose’ simply repeat the Installation instructions.
It is essentially an “R’ clip or lynchpin or another suitable device such as a padlock into position behind the lower part of the handle.
Max Torque is 100 ft/lbs
Marine brakes use hydraulic brakes and do not require the park brake attachment on the 4.5t electric coupling. This attachment is for use with electric brakes.
It is permissible to cut the brake handle from the coupling without altering the integrity of the coupling. Why? The park brake attachment does not form any part of the testing procedures and is therefore optional.