It looked like the hose had been rubbing on the oil filter housing and had created a hole. Strangely, the hose wasn''t really touching the oil filter housing at that time. I decided to check our online technical information source for a BMW factory technical service bulletin that could shed some light on this problem.Great! There was a bulletin that covered this exact problem and here''s what it described:Some BMW M3 models, produced from September 1995 through June 1996, equipped with the M54, S50, or the S52 engine, may have an upper radiator hose that can come in contact with the oil filter housing only when the engine coolant is at operating temperature. The contact is due to coolant system pressure and expansion of the hose.Checking the clearance between the upper radiator hose and the oil filter housing must be performed when the engine is cold.

It looked like the hose had been rubbing on the oil filter housing and had created a hole. Strangely, the hose wasn''t really touching the oil filter housing at that time. I decided to check our online technical information source for a BMW factory technical service bulletin that could shed some light on this problem.Great! There was a bulletin that covered this exact problem and here''s what it described:Some BMW M3 models, produced from September 1995 through June 1996, equipped with the M54, S50, or the S52 engine, may have an upper radiator hose that can come in contact with the oil filter housing only when the engine coolant is at operating temperature. The contact is due to coolant system pressure and expansion of the hose.Checking the clearance between the upper radiator hose and the oil filter housing must be performed when the engine is cold.

Mark/B-LOC: The most challenging applications are those in which components are subjected to continuous shock, vibration, or reversing loads, in these cases, keyless locking devices generate sufficient preload to ensure backlash-free connection.Jeff/KTR: Applications that include large reversing loads provide the greatest challenges.Vic/Rimtec: If the goal is accurate positioning, high-duty cycle, aiftooloiler reversing loads are the most difficult, especially if they require high acceleration and deceleration.Jeff/Tollok: The most challenging applications almost always involve extremely high torques or heavy shock loads. Operational environment and other external influences can also be challenging.PitfallsWhat are the most common pitfalls and how can they be prevented?Jeff/Tollok: Selecting the wrong type of locking assembly is a big issue. Erroneous sizing calculations and improper installation and mounting are other pitfalls. My advice is to carefully review your application parameters with your locking assembly supplier.