237 Mack Engine Service Manual
Topics in the Mack E7 Diesel Engine Overhaul Repair Manual: GENERAL INFORMATION INTRODUCTION ENGINE MODEL IDENTIFICATION Engine Information Plate LUBRICANTS AND SEALANTS. 237 Mack Engine Service Manual Specifications For Mack Engine 237 booklad.org Mack EM6-237 TURBO #: 185604 ENGINE MANUFACTURER: Mack Engineering.com > blakes.
In 1890, John was employed at the Fallesen and Berry Carriage and Wagon Co. Due to his quick success, he convinced his brother Augustus to come on board and purchase the firm located in Brooklyn, New York.
A year later, their brother William joined the firm after operating a wagon-building company in Scranton, Pennsylvania. The family's purchase paralleled one of many financial panics that occurred during this period. Undaunted, the brothers quickly adjusted and went into steam-engine maintenance and repair. Mack Builds a Bus The upshot of the Macks' new venture was their involvement in the radical development of self-propelled vehicles. Always exacting in their standards, the brothers dabbled with both steam and electric power, and 1900 was the year of their first success.
That was the year their first gas-powered vehicle, a four-cylinder, 20-passenger bus, was introduced. This 40hp unit featured a three-speed transmission mated to a cone clutch. Like others of the day, their novel platform was chaindriven. The vehicle, custom-built for the sightseeing firm of Harris and McGuire, operated successfully in Brooklyn's Prospect Park for eight years. Never ones to be shy, the brothers used this platform in a successful ad campaign, 'The first Mack was a bus, and the first bus was a Mack.'
This successful bus platform was converted into a truck in 1908 and racked up more than a million miles in its long career. Dubbed Old No. 1, this platform marked the beginning of American truck development and forever established Mack as a brand noted for tough, reliable, high-quality trucks. In 1905, the company moved its headquarters to Allentown, Pennsylvania. The Mack Brothers Motor Car Co.
Was incorporated, and brother Joseph became a stockholder. Mack's new chief engineer, Edward R.
Mack Truck
Hewitt, however, was responsible for a new medium truck series that many feel was the brand's mainstay from 1914-1936. The Mack AB-series was powered by the company's proven four-cylinder mill backed up with a three-speed transmission and a worm-driven axle. Hewitt's replacement, A.F. Masury, created the equally famous Mack AC, the heavy-duty, chaindriven platform that featured clutch brakes. This platform was solely responsible for the phrase 'Built like a Mack truck' because of its ability to haul the heavy artillery pieces to the trenches in World War I. The Mack Advantage In 1966, the company was suffering from a lack of capital, but the new Maxidyne ENDT-675 diesel series was introduced with great fanfare.
Mack Engine Service Manual
This novel engine produced 237 hp with peak torque at 1,200 rpm and delivered a usable powerband up to 2,100 rpm. This was a huge innovation because Mack offered a mill with a 52 percent torque rise (torque rise is peak torque divided by torque at rated horsepower). No big deal, you say? Consider the competition offerings of a mere 20 percent, and today's versions have an average of 35 percent. Mack engineering provided the low-end grunt by tweaking the mill's internals, modifying the fuel system, and playing with the turbo pressure. Mack capitalized on its engine's brute-force advantage by producing a five-speed triple countershaft Maxitorque transmission. The idea was intended to make the driver's job easier (less shifting), compared with the competition's 10-13-speed transmissions.
This meant a Mack truck traveling at 50 mph in Fifth gear with a heavy load could climb a 6 percent grade with the driver downshifting only one gear. In Fourth gear, the Maxidyne (Maxis) engine could maintain 1,700 rpm, and the truck would crest the grade at 20-25 mph. Maxis were highly regarded in over-the-road, dump-truck, and mixer applications, where low speeds were common and constant shifting was a pain. In 1973, an intercooled ENDT 676 Maxidyne-series engine was introduced.
This new unit featured 1,080 lb-ft of torque with 285 hp. With current emissions laws, some of the old broad powerband coverage has been lost due to the EPA's exhaust-gas recirculation. The five-speed 'tyranny' is history, too, but Mack's new TM-309-M six-speed is available with three extra-low gears. It also features a pushbutton for Reverse, where all six speeds can be utilized as well. The latest Maxidyne series includes the 300-, 335-, and 370hp variants-all are EPA controlled. In 2000, Mack truck became a wholly owned subsidiary of AB Volvo.
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Mack trucks are currently sold in 45 countries worldwide.
Mack Engine Parts
High definition, searchable, printable PDF Instant download Covers: Mack E7 Diesel Engine with Bosch P7100/P8500 Mechanical Injection Pump Pages: 303 Format: PDF Compatibility: Windows/Mac/Tablet File size: 30mb Covers Mack E7 diesel engine disassembly, bench procedures, assembly, setup and adjustments, and basic mechanical troubleshooting. V-Mac troubleshooting sold separately.
This manual covers models with Bosch mechanical injection pumps only. See for newer models.