Denton, Texas-based Peterbilt Motors Co., a division of Paccar Inc., has replaced its medium-duty, Model 330 truck with the next evolution in the series, the Model 335. The new truck builds on the company's Class 6 and 7 segments featuring a variety of enhancements designed to improve performance and styling.

"We saw this as a good time to evolve the product," explained Todd Acker, on-highway branch segment manager at Peterbilt. "Adding some of the enhancements that we did, we were able to bring it more in line with the appearances of some of our other aerodynamically designed products like our Model 387. We were able to get some synergies there by using common components. They solidify that appearance and bring that familial theme."

The Model 335 truck now becomes Peterbilt's core medium-duty vehicle with application in transport, delivery, wrecker, construction and tanker services. "The buyer of a medium-duty vehicle is different than a heavy-duty buyer, said Acker." Most medium duty buyers are independent business people who need a truck to perform whatever their business is. They've found that it is more cost-effective to use their own truck rather than source it out to another company. So they're a little bit different than what you might see on the heavy-duty side where the truck is the revenue producing source."

Featuring the same 180 in. bbc and 26,000 to 60,000 lb. GVW range as the Model 330 it replaces, the Model 335 truck will continue to offer Caterpillar's C7 and Cummins ISC engines ranging from 190 to 315 hp. The Cat engine is a 7.2 L, six cylinder, in-line, liquid-cooled diesel rated 190 to 300 hp at 2400 rpm, while the Cummins offering is an 8.3 L, six-cylinder, four valves per cylinder, liquid-cooled diesel rated 225 hp to 315 hp at 2200 and 2400 rpm. The engine package also incorporates Donaldson air cleaners, a 546 sq.in. Modine radiator with over-under configuration, Delphi Champion batteries and cab mounted horizontal exhaust system.

The Model 335 truck also carries much of predecessor's drivetrain, including Eaton Fuller's manual and Autoshift transmissions ranging from nine to 18 speeds and four-, five- and six-speed automatics from Allison Transmission. The Fuller clutch systems are manufactured by Eaton.

The truck uses Dana Spicer or ArvinMeritor axles rated 8000 to 14,600 lb. in front and 19,000 to 40,000 lb. units in the rear. The axles are mated to Wabco hydraulic or air disc brakes with tour or six channel ABS. The air brake system is driven by Cummins or Bendix compressor, fitted with a Bendix air dryer. Suspension options include Peterbilt's air trac and low air leaf systems ranging from 21,000 to 40,000 lb., Reyco/Grannings' taper leaf or multileaf systems or Hendrickson's Haulmaxx or RT/RTE series. The wheels are available in 19.5, 22.5, 24.5 in. steel or aluminum and fitted with Michelin or Bridgestone tires.

As part of the Model 335's new styling, a lighter one-piece sloping hood was added to provide improved visibility over the Model 330 truck. The hood, in addition to the fenders, is constructed of Metton, a durable, impact-resistant composite material The hood also features Peterbilt's new proprietary hood tilt assist and anti-blowdown locking mechanism developed to assist in opening and prevent unintentional closing.

The improved cab exterior construction features a stainless steel grille, chrome crown, one-piece stamped steel bumper and side engine air flow vents. New forward lighting was installed to provide better down-road coverage while visibility is also enhanced through standard larger side-view and rear windows, with optional corner windows and repositioned side mirrors available, said Peterbilt. "We once had our mirrors mounted on the doors on this cab," said Acker. "We moved the mirrors forward so the brackets are now located on the roof and cowl, creating a more unobstructed view."

The cab interior was contemporized with duo-tone plush charcoal and gray Peterbilt UltraRide seats and new operator and passenger lighting. Chrome accents were installed on HVAC registers and door and window hardware along with matching color accents on the fasteners, speaker grilles and panel fixtures. "We were looking to update the appearance of the interior and improve on the ergonomics a little bit," said Acker. "They were subtle changes but overall improved the appearance and aesthetics."

The Model 335 truck is available with a dry freight van or platform body; which is provided by America's Body Co. (ABC) through a new integrated body program. The Peterbilt/ ABC partnership is designed to expedite the order and delivery, process at Peterbilt dealers by offering a simplified buying process.

Production of the new truck began at Peterbilt's Ste-Therese, Quebec, Canada, facility in May.

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RELATED ARTICLE: Peterbilt expands heavy-duty options.

Peterbilt Motors Co. has added new component options to its heavy-duty Class 7 and 8 truck line. The new offerings include Donaldson air cleaners, Dana Spicer air disc brakes and Jost fifth wheels, along with a number of operator and cab features.

The 15 in. cowl-mounted Donaldson air cleaners have a stainless steel design with hidden cap fasteners, integrated twist-to-lock screen retainer and 5 lb. lighter weight than previous models. The joint-developed design, according to Mart,,' Bards, director of engineering at Donaldson, has "20% more airflow and three times the filtration of competitive models. Dust capacity is also 5% higher." The new air cleaner is available in Peterbilt's Model 357, 378 and 379 trucks and standard on the Model 379X.

The same vehicles, when spec'd for over-the-road applications, are also available with Dana's air disc brakes which provide a diminished brake fade at high temperature, reduced tractor-trailer stopping distance and have all extended brake life, said Peterbilt. The brakes became available on the Model 387 trucks in the second quarter.

New cab and operator features include a remote keyless entry on the Model 387 truck, larger side-view windows and repositioned, cab and cowl mounted side view mirrors standard on the Model 335, 357, 378, 379 and 385 trucks. Petebilt's American Class and Canadian Class interiors in 48 and 63 in. sleepers will also now come standard with the Concert Class sound system.

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