Tailgate/Door Lock Cylinders - Inoperative
NUMBER: 86-B-43GROUP: 0A-General Information
DATE: February, 1986
SUBJECT: LOCK CYLINDER LUBRICATION
MODELS: ALL TRUCK MODELS
Binding or inoperative door and tailgate lock cylinders may be due to a lack of lubrication which can be caused by the use of penetrating oils. These penetrating oils do not lubricate the cylinders, but wash out the factory installed lubricant. Penetrating oils are not to be used in any lock cylinders. In addition, materials which contain chlorinated propellants are not to be used on vehicles with a
plastic cap around the lock cylinder. The chlorine attacks the plastic. Lock de-icers which contain alcohol to remove the moisture from the cylinders also tend to cut the existing lubricants. To maintain proper lubrication of lock cylinders, it is recommended that a light oil or graphite lubricant be used, such as Lock-Ease (R), or equivalent. This is especially important if a lock de-icer was previously used.