551819 Removing and Installing Upper Part of Front Lock

WM 551819 Removing and installing upper part of front lock

Technical values





Removing upper part of front lock

Removing front lock upper part









1. Determine installation position.
1.1. Determine the position of the upper part of the lock with respect to the lid according to the impression made at the factory -arrow- and note it down.





2. Detach and remove upper part of front lock.
2.1. Undo fastening nuts -1- and remove upper part of lock -2-.






Installing upper part of front lock

Installing front lock upper part





1. Mount upper part of front lock.
1.1. Mount the upper part of front lock -1- and tighten the fastening nuts -2- slightly.









2. Position upper part of front lock.
2.1. Adjust the upper part of the lock with respect to the lid according to the noted position -arrow- (factory impression).





3. Tighten upper part of lock.
3.1. Tighten fastening nuts -2- to the specified tightening torque => Tightening torque: 12 Nm (9 ftlb.)+/-1.8 Nm (+/-1.5 ftlb.).





4. Check lid functions.
4.1. Close the front lid and lock it.
4.2. Check that the front lid is held down by the safety hook (locking hook) after the lid lock has been opened.
4.3. Check that return spring on lower part of lock pulls back the safety hook as far as the stop when lid is open.