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Technical Bulletin
- Cause and Effect - Non-starting 2016 1.4 TFSI Audi A4
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Jul 22
- Autobiz (337)
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...Cause and Effect - Non-starting 2016 1.4 TFSI Audi A4 When it comes to diagnosing an issue, there are two things we need to remember, cause and effect. These are better known as the initial symptoms, the reason we are diagnosing the vehicle in the first place. The underlying root cause...
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Technical Bulletin
- Causes of a defective heater blower resistor
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Aug 23
- MAHLE (143)
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...Mahle Technical Messenger Issue no. 08/2023 Causes of a defective resistor on the interior blower Replacing a defective resistor on the interior blower often fixes the obvious issue without addressing its underlying cause. If the motor of the interior blower will only run at its hi...
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Technical Bulletin
- Causes of aircon noise
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Apr 03
- Hella Ireland (1757)
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...Causes of noise Hints for fault diagnosis of noises and compressor exchange The following notes should be observed for fault diagnosis (noise sources) and before every compressor exchange: • Check all the retaining bails and mounting points for cracks, missing bolts or nuts. Any vibra...
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Tech Tip
- Causes of brake judder
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Nov 20
- Autobiz (337)
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...Hot brake judder Whenever you bring two surfaces into contact, and at least one of them is moving at high speed, the result will be friction. This friction creates heat, which is transmitted to other parts of a car's braking system. Brake discs are usually made of cast iron, and when they...
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Technical Bulletin
- Causes of overload protection tripping in air conditioning compressors
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Oct 22
- MAHLE (143)
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...Technical Messenger Air conditioning compressors have an overload protection feature that protects auxiliaries if the compressor jams. However, this fuse can trip even when there is no mechanical damage to the compressor. A predetermined breaking point separates the shaft from the pulley w...
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Technical Bulletin
- Chain Driven Water Pump Failures
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Oct 15
- Gates (127) Contact
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...Symptoms:Water pump has missing or broken teeth, or sprocket falls off the shaft.Probable cause of failure:Misalignment or damage of the tensioner, guide or chain.Corrective action:Visual inspection is required to verify the correct alignment of chain tensioner and guide. Inspect for broke...
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Service Information
- Chain Driven Water Pump Problems
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Mar 13
- Gates (127) Contact
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...Timing belt drive systems come with a variety of tensioning methods and components. In the past, engines used a manual tensioner (or eccentric pulley) for the drives, which had to be installed and then locked in place. Over time the belt tension would change as there is no self-adjustment...
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Technical Bulletin
- Change of cylinder liner flange counterbore and sealing
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Apr 16
- Pierburg (204)
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...SI 1048 For technical personnel only! Page 1/1 Cylinder Liners for OM 541/542/457 Euro 4/5 Change of liner ange counterbore and sealing Vehicle / engine Product Mercedes-Benz OM 541/542 Euro 4/5 Cylinder liner KS No. 89 846 110 Mercedes-Benz OM 457 Euro 4/5...
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Technical Bulletin
- Changed brake pads - Product specific tip
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Feb 15
- Hella Ireland (1757)
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...Product information Changed brake pads 8DB 355 009-121 / 8DB 355 011-731 Combined brake caliper TEVES Old: 8DB 355 009-121 / T1215 The brake pad on the piston side with version 8DB 355 009-121 / T1215, has been fixed to the piston using clasps (A) "Mouse traps" for the purpose of avo...
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Technical Bulletin
- Changing Xenon bulbs with a 4th generation switching unit
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Mar 03
- Hella Ireland (1757)
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...Technical Information Changing the Xenon bulb with a 4th generation switching unit Procedure When renewing a defect Xenon bulb (Fig.1) carrying out the following procedure: 1. Turn off the ignition 2. Remove the cover of the headlamp 3. Turn the ignition module to the left. The su...
