336 Excavator

  • Specs Summary
  • Net Power
    541 HP (403 kW)
  • Operating Weight
    112574 lb (51062 kg)
  • Bucket Capacities
    ( )
  • Engine Model
    ( )

988K Wheel Loader

Cat® Large Wheel Loaders are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely at a lower cost per ton. Introduced in 1963, the 988 has been the industry leader for 50 years. Focused on helping our customers succeed, we have continued to build upon each new series. The 988K continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency.
  • Net Power 541 HP (403 kW)
  • Operating Weight 112574 lb (51062 kg)
  • Forward - 2 7.2 mile/h (11.6 km/h)
  • Direct Drive - Reverse 2 8.9 mile/h (14.3 km/h)
  • Engine Model ( )
  • Transmission 31.7 gal (US) (120 l)
  • Forward - 3 12.7 mile/h (20.4 km/h)
  • Reverse - 1 4.7 mile/h (7.5 km/h)
  • Reverse - 3 14.4 mile/h (23.2 km/h)
  • Direct Drive - Reverse 1 5 mile/h (8 km/h)
  • Differential - Final Drives - Rear 49.1 gal (US) (186 l)
  • Stroke 7.2 in (183 mm)
  • Forward - 1 4 mile/h (6.5 km/h)
  • Oscillation Angle ( )
  • Direct Drive - Reverse 3 15.8 mile/h (25.5 km/h)
  • Reverse - 2 8.3 mile/h (13.3 km/h)
  • Bore 5.7 in (145 mm)
  • Displacement 1105 in³ (18.1 l)
  • Direct Drive - Forward 2 7.8 mile/h (12.5 km/h)
  • Brakes ( )
  • Direct Drive - Forward 3 13.9 mile/h (22.3 km/h)
  • Bucket Capacity Range ( )
  • Transmission Type ( )
  • Pilot System ( )
  • Gross - ISO 14396 580 HP (432 kW)
  • Bucket Capacities ( )
  • Steering System - Circuit ( )
  • Differential - Final Drives - Front 49.1 gal (US) (186 l)
  • Steering System - Pump ( )
  • Front ( )
  • Crankcase 15.9 gal (US) (60 l)
  • Rear ( )
  • Fuel Tank 188 gal (US) (712 l)
  • Total Steering Angle ( )
  • Steering Cycle Times - High Idle 3.4 s (3.4 s)
  • Hydraulic System - Tank Only 63.4 gal (US) (240 l)
  • Emissions ( )
  • Lift/Tilt System - Circuit ( )
  • Steering Cycle Times - Low Idle 5.6 s (5.6 s)
  • Torque Rise 58 % (58 %)
  • Lift/Tilt System ( )
  • Peak Torque - 1,200 rpm 2104 lb/ft (2852 N·m)
  • Peak Power Speed - 1,500 rpm - Gross - SAE J1995 588 HP (439 kW)
  • Total Hydraulic Cycle Time - Empty Bucket 18.2 s (18.2 s)
  • Rack Back 4.5 s (4.5 s)
  • Cylinders, Double Acting - Tilt, Bore and Stroke ( )
  • Peak Power Speed - 1,500 rpm - Gross - ISO 14396 580 HP (432 kW)
  • Cylinders, Double Acting - Lift, Bore and Stroke ( )
  • Forward - 4 21.6 mile/h (34.7 km/h)
  • Maximum Flow 13.7 gal/min (52 l/min)
  • Maximum Flow at 1,400-1,860 rpm 153 gal/min (580 l/min)
  • Peak Power Speed - 1,500 rpm - Net Power - SAE J1349 541 HP (403 kW)
  • Maximum Flow 71.3 gal/min (270 l/min)
  • Lower Float Down 3.5 s (3.5 s)
  • Raise 8 s (8 s)
  • Dump 2.2 s (2.2 s)
  • Relief Valve Setting - Main 551 psi (3800 kPa)
  • Hydraulic System Factory Fill 125.5 gal (US) (475 l)
  • Cooling System 31.7 gal (US) (120 l)
  • Cat Truck Match - High Lift ( )
  • Cat Truck Match - Standard ( )
  • Peak Power Speed ( )
  • Rated Speed ( )
  • Relief Valve Setting - Steering 4351 psi (30000 kPa)
  • Rated Payload - Loose Material 16 t (14.5 t)
  • Operator Sound Level (ISO 6396) 72 dB(A) (72 dB(A))
  • Machine Sound Level (ISO 6395) 111 dB(A) (111 dB(A))
  • Operator Sound Level (ISO 6396) 72 dB(A) (72 dB(A))
  • Machine Sound Level (ISO 6395) 112 dB(A) (112 dB(A))
  • Machine Sound Level (ISO 6395) 110 dB(A) (110 dB(A))
  • Coolant (Validated by Test Cell Fill Quantities) 33 gal (US) (125 l)
  • Transmission - Validated by Test Cell Fill Quantities 29 gal (US) (110 l)
  • Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only) 8.7 gal (US) (33 l)
  • Rated Payload - Quarry Face 12.5 t (11.3 t)
  • Machine Sound Level (ISO 6395) 109 dB(A) (109 dB(A))
  • Operator Sound Level (ISO 6396) 72 dB(A) (72 dB(A))
  • Operator Sound Level ( ISO 6396) 73 dB(A) (73 dB(A))
  • Net Power - SAE J1349 541 HP (403 kW)
  • Direct Drive - Forward 1 ( )
  • Direct Drive - Forward 4 24.4 mile/h (39.3 km/h)
  • Relief Valve Setting - Lift/Tilt 4757 psi (32800 kPa)

Standard Equipment

NOTE

  • Standard and optional equipment may vary. Consult your Cat dealer for details.

ELECTRICAL

  • Alarm, back-up
  • Alternator, single 150 amp
  • Batteries, dry
  • Converter, 10/15 amp, 24V to 12V
  • Lighting system (halogen, work lights, access and service platform lighting)
  • Starting and charging system, 24V
  • Starter emergency start receptacle
  • Starter lockout in bumper
  • Transmission lockout in bumper

OPERATOR ENVIRONMENT

  • Graphical Information Display, displays real time operating information, performs calibrations and customizes operator settings
  • Air conditioner
  • Cat Detect Vision, rear vision camera system
  • Cab, sound suppressed and pressurized, integrated rollover protective structure (ROPS/FOPS) radio ready for entertainment, includes antenna, speakers and converter (12-volt 5-amp) and power port
  • Controls, lift and tilt function
  • Heater, defroster
  • Horn, electric
  • Instrumentation, gauges: – Coolant temperature – Engine hour meter – Hydraulic oil temperature – Power train oil temperature
  • Light, cab, dome
  • Lunchbox, beverage holders
  • Mirrors, rearview (externally mounted)
  • Rimpull Control System
  • Seat, Cat Comfort (cloth), air suspension, six-way adjustable
  • Seat belt minder
  • Seat belt, retractable, 76 mm (3 in) wide
  • STIC Control System
  • UV glass
  • Transmission gear indicator
  • Vital Information Management System (VIMS) with Graphical Information Display: External Data Port, Customizable Operator Profiles, Cycle Timer, Integrated Payload Control System
  • Wet-Arm wipers/washers (front and rear): – Intermittent front and rear wipers
  • Lights, directional

POWER TRAIN

  • Brakes, oil-cooled, multi-disc, service/secondary
  • Case drain screens
  • Crankcase guard
  • Electro hydraulic parking brake
  • Engine, C18 MEUI diesel, turbocharged/aftercooled
  • Ground level engine shutoff
  • Turbine precleaner, engine air intake
  • Radiator, Aluminum Modular Radiator (AMR)
  • Starting aid, ether, automatic
  • Throttle lock, electronic
  • Torque converter, Impeller Clutch (ICTC) with Lock up clutch (LUC), Rimpull Control System
  • Transmission, planetary powershift, 4F/3R electronic control
  • Manual switch and automatic fuel priming
  • Cat Production Measurement ready

OTHER

  • Automatic bucket lift kickout/positioner
  • Base machine price includes a rim allowance
  • Hydraulically driven demand fan
  • Couplings, Cat O-ring face seals
  • Doors, service access (locking)
  • Ecology drains for engine, radiator, hydraulic tank
  • Fuel tank, 731 L (188 gal)
  • Hitch, drawbar with pin
  • Hoses, Cat XT™
  • Hydraulic, steering and brake filtration/screening system
  • Cat Clean Emission Module
  • Oil sampling valves
  • Premixed 50% concentration of extended life coolant with freeze protection to –34° C (–29° F)
  • Rear access to cab and service platform
  • Steering, load sensing
  • Toe kicks
  • Vandalism protection caplocks

Optional Equipment

NOTE

  • Standard and optional equipment may vary. Consult your Cat dealer for details.

POWER TRAIN

  • –50° C (–58° F) antifreeze
  • Engine oil change system, high speed, Wiggins
  • Engine block heater 120V or 240V
  • High ambient cooling – software
  • Cat Production Measurement

OPERATOR ENVIRONMENT

  • Cab precleaner
  • AM/FM/CD/MP3 radio
  • Satellite Sirius radio with bluetooth
  • LED warning strobe
  • CB radio ready
  • Window pull down visor
  • Handrail mounted mirrors

MISCELLANEOUS ATTACHMENTS

  • Front and rear roading fenders
  • Fast fill fuel system (Shaw-Aero)
  • Cold Weather Starting (extra starter plus two batteries)
  • Aggregate Handler