Overview

Overview
This new 2027 Peterbilt 589 Traditional day cab is set up as a tri-axle steel dump truck for hauling construction materials. It has a 17' Heritage Steel Smooth Side dump body, a 245" wheelbase and a Platinum interior in Alpine Gray.

Engine & Drivetrain
The truck is powered by a Cummins X15 Production Series engine rated at 605 HP at 1,950 RPM and 2,050 lb-ft of torque at 1,000 RPM, governed at 2,000 RPM, with 2024 emissions. It uses the EMUX electronics architecture, and the powertrain is optimized for performance in heavy GCWR vocational applications. Typical operating speed is 70 MPH. A Jacobs compression brake is fitted, with its controls on the right-hand column. There is a 12-pin remote PTO/throttle provision in the engine bay, and PTO maximum engine speed is set to 1,400. The engine idle shutdown timer is enabled, with an ambient temperature overrule and shutdown when the parking brake is set. Engine protection shutdown is included.

The transmission is an Eaton RTLO22918B 18-speed manual with an oil-to-water cooler, a black shifter, a self-adjusting clutch and a pre-damped clutch. A dash-mounted single-acting electric-over-air PTO control is included. The driveline is a 1810 HD main shaft with one midship bearing (4.5" x .180 wall tubing) and a 1710 interaxle shaft for the tandem. The rear axle ratio is 3.91.

The electrical system has a PACCAR 160-amp brushed alternator, a PACCAR Premium starter and four Interstate 31ECL 12V batteries rated at 2,800 CCA. There is a low-voltage disconnect, a cab power disconnect switch left of the driver's seat, and a battery jumper terminal under the hood. A 110–120V immersion block heater is fitted. Engine equipment also includes a 37.4 CFM air compressor, a high-efficiency cooling system with a 2-speed fan clutch for frequent start/stops, and a PACCAR fuel/water separator with an extended service interval, fuel heat and a 12V filter heater. Air intake uses 15" premium stainless steel cowl-mounted air cleaners with slotted stainless caps and an increased air filter full indication.

The exhaust is a dual single-module DPF/SCR mounted under the cab on the right side. It exits through chrome-plated 7" steel standpipes (in place of 5"), 36" high, with clear coat and 45-degree cut curved tips. The DPF regeneration switch has the stop position removed.

Chassis & Axles
The frame uses 10-3/4" steel rails to 354" with 3/8" rail thickness. It has a full steel inner liner, zinc-coated anti-corrosion treatment, aluminum crossmembers, heavy-duty iron front spring brackets, and a square end of frame with a steel crossmember. The wheelbase is 245", cab-to-axle is 145.1", back of cab to end of frame is 202.5", and front axle to back of cab is 99.9". Maximum grade rating is 6%. Engineering ratings are GAWR front 20,000 lbs, first intermediate 20,000 lbs, second intermediate 23,000 lbs and rear 23,000 lbs. GVWR is 80,000 lbs and GCW is 80,000 lbs.

The front axle is a PACCAR FX-20 steer axle rated at 20,000 lbs, with a 4" drop and wide track. Steering is TRW TAS85 dual-gear power steering with a frame-mounted reservoir and cooler.

The rear axle is a Dana Spicer D46-172 tandem rated at 46,000 lbs, with heavy-wall housings and a drive axle lube pump. It has a tandem differential lock with speed interlock, plus a separate dash control for full-lock traction. Bendix Smart ATC traction control and an SBM valve are included.

The pusher is a Hendrickson EXS20 self-steering axle rated at 20,000 lbs, spaced 50" ahead of the forward drive axle, with its own air tank. Its lift regulators and switches are tie-strapped to the rail, with gauges in the dash. When lifted, the axle stows low to maximize body clearance.

Every axle has Bendix air disc brakes: ADB22X on the steer and tandem drive axles, and Hendrickson air discs on the pusher. Hubs are PHP10 iron Preset+ on the steer and pusher axles and PHP10 aluminum Preset+ on the drives. Dust shields are fitted, and all axles run synthetic lubricant. The truck also has a 6S6M anti-lock braking system and a tire pressure monitoring system.

The air system has a Bendix AD-HF EP air dryer with heater, coalescing filter and extended purge. There are pull cords on all air tanks and nylon chassis hose. Tanks are polished aluminum outside the frame rails plus aluminum tanks under the body. A self-returning dash-mounted brake hand valve is plumbed to all service brakes. Body connections are 5' back of cab, and there is a 7-way socket at the end of the frame.

Fuel is carried in polished 26" aluminum tanks: 80 gallons on the right and 50 gallons on the left, with polished straps. The left side has a small heavy-duty 14-gallon DEF tank with a polished stainless cover. The polished stylized aluminum battery box on the left side has a non-slip step with heavy-duty reinforcement. On the right side there is an aluminum non-slip cab entry step. Up front is a chromed steel Texas-style bumper with two tow points.

Suspension
The front uses taper leaf springs rated at 20,000 lbs, with Tenneco shocks, greasable spring pins and 70mm spacer blocks. The rear is a Peterbilt Air Trac rated at 46,000 lbs with 52" axle spacing. It has air springs with internal bumpers, a single leveling valve on the forward drive axle, and a dash-mounted dump switch with indicator light. The cab rides on its own air suspension.

Cab & Interior
The aluminum day cab has a 131" BBC aluminum hood with a polished crown and spring tilt assist. Paint is Axalta two-stage effect metallic/pearl Radiant Fire (L3262EY) on the cab, hood and fenders, with a black frame. The exterior has a stainless V-style sunvisor, 2" fender lips, a removable bugscreen behind the grille, an NFPA-compliant textured grab handle and an air horn under the cab. Mirrors are stainless 7"x18" heated, motorized West Coast mirrors, with two 8" heated convex mirrors and a look-down mirror over the passenger door. Lighting is projector headlight pods with integral turn signals, five LED bullet marker lights, LED stop/turn/tail/backup lamps at the end of the frame, and extra LED turn signals at the lower rear corners of the cab. The truck is pre-wired for auxiliary, beacon/strobe and load lights.

Inside, the Platinum interior is Alpine Gray with a rubber floor. It includes a thermal insulation package, Peterbilt keyless entry, and power locks and windows. Glass is a one-piece curved windshield, a fixed one-piece rear window and dark window tint. The driver and passenger seats are Peterbilt LX Premium: air ride, high back, black leather, with armrests. The driver's seat is heated. The leather-wrapped premium steering wheel has the Peterbilt logo and multifunction audio and cruise controls, on a tilt/telescoping column.

For entertainment and communication, there is a ConcertClass AM/FM/WB radio with 3.5 aux, satellite radio, Bluetooth phone/audio, a USB port and a mid-level 4-speaker package. A Cobra 29 CB is mounted center of the header, with dual 48" antennas on the mirrors. The dash has a 15" digital cluster with bright bezel gauges. It displays air filter restriction, tractor and trailer brake application pressure, suspension air pressure 1 and 2, trailer reservoir pressure, engine and PTO hourmeters, and engine percent torque. Separate 52mm backlit gauges show front and rear drive axle oil temperature (with guards), engine oil temperature, fuel filter restriction, manifold pressure and pusher axle pressure. There are also three extra dash switches. Other features include a fresh-air heater/AC with an extra fine particulate filter, a dual USB charging port, a pull-out tray over the glove box, a rear wall map pocket, intermittent wipers, a fire extinguisher and a triangle reflector kit. The truck has global telematics hardware, Class 8 fleet tracking and a 5-year SmartLINQ RD subscription.

Body & Equipment
The Heritage Steel Smooth Side dump body is 17 ft long and 99" wide. Sides are 60" high in 3/16" AR-450, with a front post only, a 3/16" rear post, a formed 3/16" AR-450 top rail, and 8" aluminum diamondplate boards. The floor is 1/4" AR-450 on formed 3/16" longsills, with no crossmembers and a formed bottom rail. The 3/16" AR-450 bulkhead is built for a trunnion hoist and slim tank. The 18" cab shield is narrowed on both sides, in 10-gauge material with a 6" face. The body is sandblasted, primed and painted, and the aluminum boards are unpainted.

The tailgate is 66" high in 3/16" AR-450, with two horizontally braced panels and an overslung top hinge. It has an air-operated hi-lift with heavy-duty cylinders in the rear posts behind access panels, plus an air tailgate, chains, a center coal door and salt locks on each side.

Hydraulics are a trunnion-mount telescopic hoist with an air-shift PTO and direct-mount air-shift pump. Control is by a feathering air valve, with a tower between the seats for the body, strobes and tarp. There is a pump kickout switch at the rear and a steel slim tank in the hoist doghouse. The 3-line system has shutoff valves, and the dash has PTO-engaged and body-up lights.

Body lighting is an LED package with penny marker lights and combo stop/turn/tail lights in the rear posts. There are five markers in the top and bottom rails of the rear post and four more in the rear post, two above and two below the ovals. Strobes sit on the front of the cab shield at a 45-degree cut and in each rear post. Round combo lights are set in plate, with an ID cluster on the hinge.

The tarp is an Aero electric-arm flip system with mesh and top-mount arms. The body has a driver-side front ladder with one step below the bottom rail, front inside steps and steel front splash guards. Full-width Heritage rear flaps hang on hooks with straps and chains. A 6" bolt-on rear apron and aluminum diamondplate bottom rail covers are fitted, with fender skirts over the tandem and lift axle. The body also includes a body prop, a back-up alarm, and a lift axle gauge, regulator and Schrader valve.

Tires & Wheels
Up front, Bridgestone 20-ply 315/80R22.5 M870 tires ride on Alcoa 89U637 22.5x9.00 high-polish aluminum wheels. The tandem drive has eight Bridgestone 16-ply 11R24.5 M799 tires on Alcoa 985657 24.5x8.25 high-polish severe service wheels. The pusher runs two Bridgestone 20-ply 315/80R22.5 M870 tires on Alcoa 89U637 22.5x9.00 high-polish wheels. All wheels have mirror-polish and Dura-Bright outer finishes, with wheel guards on the steer, drive and pusher axles.

Warranty & Protection
The truck has Peterbilt Class 8 Standard Coverage for 1 year/100,000 miles (160,000 km) and base emissions warranty coverage for 5 years/100,000 miles.