Sprinter 313 2011 (2006-2015?)
•Adjustment should be done on flat land, place bricks in front and behind the wheels to stop the van from rolling.
•Take off the handbrake.
•Under the van there is a handbrake unit where the 3 cables join together, 1 form the front (hand brake), 2 from the rear wheels).
You'll see two 13mm nuts on the unit (adjustment nut and back locking nut),
• undo 13mm back locking nut then turn the adjustment nut clockwise (tighten handbrake) or anticlockwise (loosen handbrake) to adjust the handbrake.
• once the hand brake is fully engaged with 5-6 clicks, tighten the back locking nut while holding the adjustment nut with a spanner (to stop it from moving).
• put the hand brake on remove the bricks and your done.