Diagnosing And Servicing Active Motor Mounts
For many years, auto makers relied on solid rubber motor mounts to support the engine. The natural flexibility in rubber allows the mounts to absorb vibration. However, if the rubber is too compliant, the engine may experience excessive motion under load that could stress and crack exhaust pipes and connections. And with such tight clearances under the hood, there’s a risk of something rubbing against something else and causing additional noise or problems. So the rubber in the mounts has to be relatively stiff to limit compliance so the engine does not rock excessively when it is under load.
Tech Feature: Nissan Undercar Noise and Vibration Repairs
When it comes to Nissan undercar work, Import Specialist Bob Dowie discusses the first challenge you face and that is selling the work. While he uses the word “selling,” what you are actually doing is making the customer aware of issues that need to be addressed to maintain the reliability and, more importantly, the safety of their vehicle.
Tech Tip: Motor Mount Inspection Guidelines
Most motor mounts are relatively simple in design and consist only of metal attachment plates and large rubber insulator blocks. But some vehicles have “hydraulic” or “hydro-mounts” with hollow chambers filled with glycol or hydraulic fluid.
Anchor Industries Adds 229 New Engine Mount Line Numbers
All new numbers are now available and account for more than 84 million vehicle applications, which represents approximately 9 percent of the total U.S. vehicle registration.
Tech Tip: Chrysler Engine Mount Noise
I know the majority of you auto techs are extremely proficient at finding and repairing sources of strange and unusual noises. Although chasing these audible emissions can be time consuming and without a doubt aggravating, the customer’s concerns are usually valid and can often be of monumental importance to them.
Tech Tip: Chrysler Engine Mount Noise
I know the majority of you auto techs are extremely proficient at finding and repairing sources of strange and unusual noises. Although chasing these audible emissions can be time consuming and without a doubt aggravating, the customer’s concerns are usually valid and can often be of monumental importance to them.
Tech Tip: Motor Mounts – Supporting the Engine and Transmission
Motor mounts are not a very glamorous product, but they do have an important function: They support the engine and transmission, and dampen noise and vibration. The mounts isolate the engine and transmission from the chassis so vibrations and noise are not transmitted to the rest of the vehicle.
Tech Tip: Motor Mounts – An Opportunity for an Add-On
Often-overlooked engine components that may need to be replaced when installing a remanufactured engine are motor mounts. These rubber mounts can deteriorate, collapse and/or separate with age. Fluid-filled "hydraulic" type mounts can often leak, allowing annoying engine vibrations to be transmitted to the chassis.