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The Science Of Drive Shaft Repair
During the early years of the automobile, automotive engineers were confronted with the problem of transmitting power from a fixed position at the transmission to the rear axle, which is traveling through a vertical plane. more
Rack And Pinion Unit Repairs
The function of any steering gear is to transform the circular motion of the steering wheel into the linear motion needed to steer the front wheels right and left. more
Ball Joints And Tie Rod Ends Are Important Safety Components
It's important for all parts and service professionals to emphasize safety when selling steering linkage parts. more
Take Charge Of A/C
In the years ahead, a new refrigerant called HFO-1234yf will gradually replace R-134a in new vehicles. more
Air And Oil Filter Change Intervals Depend On Use
Back in the day when most motorists changed their oil every 3,000 miles or three months, and engines were equipped with quart-sized filters, some penny pinchers only replaced their oil filters at every other oil change. more
ASE P2 TEST PRIMER: Ignition System
Distributorless Ignition Systems (DIS) include "waste spark" DIS systems with coil packs and plug wires, Coil-On-Plug (COP) ignitions (one coil per spark plug), and Coil-Near-Plug (CNP) ignitions (one coil per plug with a short plug wire between the plug and coil). more
Is it necessary to replace all of the TPMS sensors when a vehicle needs new tires?
The lithium ion batteries inside TPMS sensors may last anywhere from five to 10 years. Five to six years is a more typical lifespan for older TPMS sensors. more
Oil Filters: It's What's Inside That Counts
Filter manufacturers use a variety of different filter media to keep the oil clean. more
Offer Your Customers A Premium Oil Filter
Believe it or not, smaller particles cause more engine bearing wear than larger particles. Most wear is caused by particles in the 5 to 20 micron size range because that's the minimum oil film clearance between many bearings and their journals. more
Motor Oils - More Changes Are On The Way
It's important to know that many automakers have developed, and will continue to develop, their own oil quality and performance standards. more
Maintenance Aerosols Perform A Range Of Tasks
For more specialized applications, there are aerosol products such as rust release penetrating sprays that are faster-acting and are more aggressive than a typical multi-use product. more
When Selling Hoses, Always Consult Cataloging For Recommendations
To withstand extreme temperatures, most modern coolant hoses are now made from ethylene propylene (EPDM rubber, which can endure operating temperatures ranging from -40 to +275 degrees F. more
ASE P2 TEST PRIMER: Battery, Charging and Starting Systems
The battery stores energy to provide starting and reserve power for the electrical system. Lead-acid batteries must be maintained at or near full charge for maximum life (average life is 4 to 5 years). more
TPMS UPDATE: No Spare, No Problem
In addition to technical improvements that have made flats less likely, TPMS provides drivers with warnings of low air pressure, leaks and punctures. more
A Chemical For Every Job
There are general purpose cleaners that can be used for a variety of cleaning applications, but there are also specialty cleaners available for more specific purposes. more
All In The Timing
Because their remaining service life is difficult to estimate, timing belts must be replaced at specific mileage intervals to prevent failure. more

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