The Mack Pinnacle is a series of heavy duty (
Class 8) trucks produced by
Mack Trucks. Introduced in 2006, the Pinnacle is the successor of the Mack Vision. Currently, the product line is sold in the United States and Canada; in Venezuela and Peru, the Pinnacle is marketed as the Mack Vision Elite.
Marketed primarily as a highway tractor, the Pinnacle is sold in a set-forward front-axle configuration (the set-back axle version has been replaced in the United States and Canada by the
Mack Anthem). Mack assembles the Pinnacle in its Lehigh Valley Operations facility in
Macungie, Pennsylvania.
Design
The Pinnacle is a long-hood
conventional semi-tractor. Designed for local and regional use it usually has a day-cab but five sleepers, from a flat top to a hi-rise, are available. Roof fairing, side shields, and skirts aerodynamic aids are offered.
Advanced electronics are used for engine and chassis controls, as well as maintenance. All trucks have
ABS.
In 2019 a new generation
Bendix Bendix may refer to:
People First name
* Bendix Hallenstein (1835–1905), New Zealand businessman
Middle name
* Kim Bendix Petersen (born 1956), Danish singer known by the stage name King Diamond
Last name
* John E. Bendix (1835–1905), Am ...
Wingman Fusion was available in the Anthem. It uses radar and cameras to provide emergency braking, lane departure, and blind spot warnings.
Mack builds most of their components (engines, transmissions, and axles) to work together. Trucks can also be custom-designed with vendor components. Total loaded weight can be up to and over including trailers.
Engine
When introduced for 2006 the Pinnacle used the new MP7 engine,
the MP8 was available in 2007. The MP8 is currently the only engine available in the Pinnacle.
The Mack MP7 is a
overhead cam turbocharged
In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pro ...
inline six-cylinder diesel
Diesel may refer to:
* Diesel engine, an internal combustion engine where ignition is caused by compression
* Diesel fuel, a liquid fuel used in diesel engines
* Diesel locomotive, a railway locomotive in which the prime mover is a diesel engin ...
engine. It develops and of torque.
The Mack MP8 is a overhead cam turbocharged inline six-cylinder engine. It develops and of torque.
Transmissions
All Mack transmissions have aluminum cases and three counter-shafts. Both Mack and Fuller have manual and automated shifting models. Allison transmissions are available as fully automatic only.
Mack mDRIVE™ automated manual is the base transmission. It has no clutch pedal and shifts itself on demand. The driver can override it but it is normally driven in "D". It can have 12, 13, or 14-speeds.
Other Mack manual transmissions have 8-18 speeds.
Fuller UltraShift™automated shifting systems are available on all transmissions from 9- to 18-speeds.
Allison RD series 6-speed transmissions is available. The RDS is a
fully automatic planetary gear transmission with a lock-up torque converter.
Frame
A ladder frame with beam axles is used. The front axle is set forward on semi-elliptical
leaf springs. The set-back axle version was replaced by the
Anthem
An anthem is a musical composition of celebration, usually used as a symbol for a distinct group, particularly the national anthems of countries. Originally, and in music theory and religious contexts, it also refers more particularly to short ...
in 2017.
The base rear suspension is a Mack tandem (two powered axles) but other axle/suspension combinations are available. Wheelbases are from
Meritor supplies S-cam
air brakes, steering systems, driveshafts, and other components. Front air disc brakes are available.
Axles
Front axles are available with rating.
Mack powered axles have the drive carrier on top of the housing. This lets the driveshafts be in line from the transmission to and between the axles at a higher level above the ground. With the higher level above the ground the driveshafts and u-joints are less prone to dirt and damage, important in on/off-road construction.
The Twin Y air suspension is base. It has trailing arms that fork to the rear and attach to both the top and bottom of the axle. There is an air bag behind the axle. Each axle is sprung individually. They are rated at .
The Camelback tandem (two powered axles) was offered in earlier models. This has multiple leaves mounted above the bogey pivot which curve down and under the axles. It was not offered after 2015.
Vendor spring and air-ride axle/suspension combinations are rated up to .
Applications
The Pinnacle's set-forward front axle and high rectangular grille make it high drag and not well-suited for long-distance hauling. It is available with a sleeper but it is commonly used as a day cab for local and regional hauling, where local laws and conditions restrict length or affect weight distribution.
The Pinnacle has the high ground clearance, strong chassis, and available components for on/off-road construction. It is suited for dump, flatbed, and lowboy use.
On-highway markets for Mack are freight, bulk materials, and farm products like grain and livestock.
References
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External links
Pinnacle Axle Back at Trucksplanet.com Pinnacle Axle Forward at Trucksplanet.com The Mack Pinnacle with MP8 505C+ engine at Truck News.comMack Vision Elite homepage- Peru (Spanish)
Mack Vision Elite homepage- Venezuela (Spanish)
{{Mack Trucks
Pinnacle
A pinnacle is an architectural element originally forming the cap or crown of a buttress or small turret, but afterwards used on parapets at the corners of towers and in many other situations. The pinnacle looks like a small spire. It was mainly ...
Vehicles introduced in 2006
Tractor units
Class 8 trucks