Oshkosh P & MPT Series

Unlike commercial vehicles that are merely adapted to plow snow, the P-Series and MPT-Series chassis are specially designed to attack the most severe winter conditions. Unstoppable workhorses for demanding snow removal operations, these vehicles are chock full of the muscle, durability, reliability and value that come with 50 years of Oshkosh expertise. These chassis can seamlessly integrate with a variety of plows, scrapers, bodies, de-icers and brooms to give airport crews the flexibility to respond to winter storms with full force.

Specifications

  • ENGINE: Cummins ISX 320-450 @ 2,100 RPM
  • FRONT AXLE: Oshkosh 20K or 25K | 6.17:1
  • REAR AXLE: ArvinMeritor RS 26-185, 23K-26K Single (4x4) Standard
  • BRAKES / SERVICE: Dual System, Anti-Lock , Air Operated Mechanical
  • COOLING SYSTEM: Fin & Tube Type Radiator Core

LEGENDARY ALL-WHEEL DRIVE COMPONENTS

Superior durability comes from road-proven transfer case and the Oshkosh steering drive axle with closed-wheel end design and heat-treated alloy axle shafts. The steering axle’s adjustable tapered-roller trunnion bearings are engineered to easily handle the side loads encountered under severe snow-removal conditions.

ERGONOMICALLY-DESIGNED | EFFICIENT DASHBOARD

Easy-to-reach controls are logically located on an instrument panel that’s easy to remove for repair or
replacement of gauges. A convenient touch-pad gear selector (automatic transmission) is at the driver’s fingertips. Side-window defrosters are integrated into the dash, and reset-type circuit breakers
are easily accessed from a panel on the dash’s right side.

COMFORTABLE & ROOMY CAB

An air-ride driver’s seat delivers maximum comfort, while a flat floor provides comfortable accelerator
and brake pedal locations, and makes cleaning the cab very simple.

EXCELLENT VISIBILITY

Safety and productivity are enhanced with a reverse-slope windshield, top-mounted windshield
wipers, and optional side-window wipers. All dramatically reduce snow and ice build up, and help prevent wiper damage. Plus, a short hood means superior visibility from the driver’s seat.

ATTACHMENTS ARE EASILY ADDED

Plows, dump spreaders and other equipment can be added quickly, without having to first move other components. Number- and color coded wiring harnesses and weatherproof electrical connectors assure easy identification and repair, as well as easy installation of dealer-installed lighting.

PROVEN CAB-MOUNTING SYSTEM

We use a three-point system of attaching the cab to the vehicle with rubber mount cushions, so shocks, vibrations and torsional strains from roads are absorbed without transferring them to the cab.

SUPERIOR ENGINE-COOLING SYSTEM

Our heavy-duty fin-and-tube-type radiator has a full 1,000 square inches of cooling area. Its steel
frame and tanks are bolted to a copper core for superior strength and longevity. Mounted above the
frame rails, the radiator location allows room for easy installation of a crankshaft-driven PTO.

FENDERS & HOOD MAKE ACCESS EASY

Engine access and equipment mounting are a cinch, thanks to cutaway fenders and a butterfly hood. Daily oil checks can be done from the ground through a small hatch in the hood. And the easy-to-remove fenders give quick, full accessibility for more extensive engine maintenance.

AIR CLEANER:

Make and Type: Donaldson ECG dry type, two stage; Inside/outside air intake, manually controlled

AXLE, Front:

(P-Series)
Make and Model: Oshkosh 25K, single reduction with special heat treated alloy steel shafts and Oshkosh cage ring type steering ends
Ratio: 6.17:1, other ratios available

(MPT-Series)
Make and Model: Oshkosh 20K, single reduction with special heat treated alloy steel shafts and oshkosh cage ring type steering ends

AXLE, Rear:

(P-Series)
Make and Model:

ArvinMeritor RS 26-185, 26K single (4 x 4) [standard] ArvinMeritor RS 30-185, 30K single (4 x 4) [optional] ArvinMeritor RS 38-380, 38K single (4 x 4) [optional] ArvinMeritor RT 46-160, 46K tandem (6 x 6) [standard] ArvinMeritor RT 52-185, 52K tandem (6 x 6) [optional] ArvinMeritor RT 58-185, 58K tandem (6 x 6) [optional]

(MPT-Series)
Make and Model:

ArvinMeritor RS 26-185, 23K single (4 x 4) [standard]

BRAKES, PARKING AND EMERGENCY:

Type: Spring brakes mounted on rear axle
Secondary Emergency System: Modulated split type

BRAKES, SERVICE:

Type: Dual system, anti-lock, air operated mechanical
Size: Front - 16.5 x 7.0 in [419 mm x 178 mm] Rotary S-cam, 434 sq in [2,800 sq cm] per axle
Rear: (4x4) 16.5 x 7.0 in [419 x 178 mm] Rotary S-cam, 434 sq in [2,800 sq cm] per axle
Rear: (6x6) 868 in2 [5,600 sq cm] per tandem
Air System: Reservoir capacity, 6530 cubic inches, Air dryer, AD-IS integral with wet tank; Compressor 15.7 cfm

CAB:

Construction: Oshkosh extra heavy-duty All steel construction with galvannealed exterior
Full length piano type door hinges with stainless steel hinge pins
Full width stationary rear window
Fully rust-proofed
One-piece reverse slope windshield
RH door curb window
Tinted safety glass throughout
3-point rubber mounted
72 in [1,829 mm] cab width

STANDARD ACCESSORIES:

Air and electric horns
Air horn snow shield
Bostrom® Sierra Air 400RX driver seat and passenger seat
Dual top mounted electric windshield wipers with intermittent speed control
Fresh air type heater and defroster
Self-canceling turn signals
Three-point seat belts
Tilt/telescoping steering column
West Coast heated motorized mirrors with integral separately controlled convex lens
Windshield washer

INSTRUMENTATION:

Gauges, multiplex panel: fuel level, coolant temperature, dual air system pressure, voltmeter, speedometer, tachometer with engine hourmeter
Low air pressure buzzer-light
Low oil pressure and high coolant temperature warning lights and buzzer
Manual reset type circuit breakers
Transmission temperature light
Transfer case hi-lo indicator

CHASSIS EQUIPMENT:

Air dryer
Cable drain, inside air tank
Back-up alarm
Butterfly type fiberglass hood
Crankshaft PTO adapter
Single 50 gal (189 L) fuel tank under left hand door
Single piece steel fenders
Heated fuel/water separator
Battery box under right hand door
Vertical cab mounted exhaust
Ether start
Stainless steel grille
2-ft integral frame extension at front for equipment mounting
Access steps, front
Frame mounted tow hooks (2) rear

COOLING SYSTEM:

Radiator Core: Fin and tube type
Frontal Area: 1,100 sq in [7,097 sq cm] Radiator Construction: Bolted, with built-in deaeration system
Transmission/Converter Oil Cooler: Oil-to-water type
Engine Air Intake Cooler: Mounted in front of radiator
Fan: Temperature controlled clutch with engine mounted fan ring

ELECTRICAL SYSTEM:

Alternator: 200 amp
Lighting: 12 volt
Starting: 12 volt
Battery: Three 12 volt, 950 CCA each @ 0°F [-18°C] (2,850 CCA total)

ENGINE:

(P-Series)
Make and Type: Cummins ISX
Displacement: 11.9 L
Horsepower: 320 - 450 @ 2,100 rpm
Governed RPM: 2,100
Engine Protection: Low oil pressure/high coolant temperature automatic power derate system

(MPT-Series)
Make and Type: Cummins ISX
Displacement: 11.9L
Horsepower: 320@ 2,100 rpm
Governed rpm - 2,100

FRAME:

Material: Carbon manganese steel, heat-treated
Type: Single formed channel
Size: 12.38 x 3.88 x .38 in [314 x 98 x 9.5 mm] Yield Strength: 120,000 psi [827 Mpa ] minimum
Section Modulus: 23.49 cu in [384.93 cu cm] per rail
RBM: 2,818,000 in-lb [308 844 N•m] per rail
Construction: Grade 8 bolts and locknuts

LIGHTING:

Clearance and marker lights comply with federal regulations
Fender height head lights with integral turn signals
Rear-mounted stop/tail/turn signal lights with back up light
Cab light bar for custom light installations

PAINT:

Two-part acrylic urethane
One prime coat of 2-part epoxy
One color from Oshkosh standard color chart

PROPELLER SHAFTS:

Make and Model

Front: Dana 1710 Series
Rear (4x4): Dana 1710 Series
Rear (6x6): Dana 1810 Series
Inter-Axle: Dana 1710 Series
Dynamically Balanced Splines - “Glidecoat” treated

STEERING SYSTEM:

Make and Model: Sheppard 592S integral hydraulic power gear

SUSPENSION:

Front: Type - Hotchkiss, semi-elliptic spring
Main: 7 leaf, 48 x 3 in [1,219 x 76 mm] Auxiliary: 5 leaf, 39.63 x 3 in [1,006 x 76 mm] Rating: 25,000 lb [11,340 kg] Rear (4x4): Type- Hotchkiss, semi-elliptic spring
Main: 15 leaf, 50.13 x 3 in [1,273 x 76 mm] Auxiliary: 6 leaf, 34 x 3 in [864 x 76 mm] Rating: 27,000 lb [12,247 mm] Rear (6x6): Type- Hendrickson® steel leaf spring, RT-460
Rating: 46,000 lb [20,965 kg]

TIRES:

Size:

Front (4x4): 395/85R20 - 20 ply
Rear (4x4): 395/85R20 - 20 ply
Front (6x6): 395/85R20 - 20 ply
Rear (6x6): 395/85R20 - 20 ply
Type: Radial
Tread: Michelin XZL

*Various configurations are available.

TRANSFER CASE*:

Oshkosh Smart-Shift electric over air control range shifter
Model 55000: 2 speed 4x4 – Dorr-Miller auto locking differential
Ratios: 2.66:1 Low, 0.98:1 High 6x6 – Front axle disconnect

WHEELBASE:

(4x4) WB 158” CA 91” AE 35”
(6x6) WB 175" CT 109" TE 56"
*Other wheel bases and dimension combinations available. Consult factory.

WHEELS:

Size: Front (4x4) - 20.00 x 10.00
Rear: (4x4) - 20.00 x 10.00
Front: (6x6) - 20.00 x 10.00
Rear: (6x6) - 20.00 x 10.00
Type: Steel disc

*Various configurations are available.

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