Wheeled Excavator A 924 Heavy Lift litronic` Operating Weight 58,900 – 60,600 lb Engine 215 HP (I) / 160 kW Stage Tier 4f Bucket Capacity 0.98 – 2.22 yd3 Technical Data Diesel Engine Hydraulic System Rating per 215 HP (I) (160 kW) at 1,700 rpm Hydraulic pump SAE J1349 / ISO 9249 for equipment 2 Liebherr axial piston variable displacement Model Liebherr D934 and travel drive pumps (double construction) Type 4 cylinder in-line Max. flow 2 x 61 gpm Bore / Stroke 4.8 / 5.9 in Max. pressure 5,076 psi, PowerLift 5,511 psi Displacement 427.2 in 3 for swing drive reversible axial piston variable displacement Engine operation 4-stroke diesel pump, closed-loop circuit Common-Rail Max. flow 37 gpm turbo-charged and after-cooled Max. pressure 6,092 psi reduced emissions Hydraulic pump Liebherr-Synchron-Comfort-system (LSC) with Air cleaner dry-type air cleaner with pre-cleaner, primary regulation and control electronic engine speed sensing regulation, and safety elements pressure and flow compensation, torque con- Engine idling sensor controlled trolled swing drive priority Electrical system Hydraulic tank 46 gal Voltage 24 V Hydraulic system max. 114 gal Batteries 2 x 135 Ah / 12 V Hydraulic oil filter 1 main return filter with integrated partial micro Alternator three-phase current 28 V / 140 A filtration (5 µm) Stage Tier 4f MODE selection adjustment of engine and hydraulic performance Harmful emissions values in accordance with EPA/CARB-40CFR stage via a mode pre-selector to match application, Tier 4f e.g. for especially economical and environmen- Emission control Liebherr-SCR technology tally friendly operation or for maximum digging Option Liebherr particle filter performance and heavy-duty jobs Fuel tank 87 gal S (Sensitive) mode for precision work and lifting through very Urea tank 12 gal sensitive movements E (Eco) mode for especially economical and environ- mentally friendly operation P (Power) mode for high performance with low fuel con- sumption P+ (Power-Plus) mode for highest performance and for very Cooling System heavy duty applications, suitable for continuous Diesel engine water-cooled operation compact cooling system consisting cooling unit Engine speed and stepless alignment of engine output and for water, hydraulic oil and charge air with step- performance setting hydraulic power via engine speed less thermostatically controlled fan Option Tool Control: 20 preadjustable pump flows and pressures for add-on attachments Hydraulic Controls Power distribution via control valves in single block with integrated Swing Drive safety valves Drive Liebherr axial piston motor in a closed system, Servo circuit Liebherr planetary reduction gear Equipment and swing with hydraulic pilot control and proportional Swing ring Liebherr, sealed race ball bearing swing ring, joystick levers internal teeth Chassis electroproportional via foot pedal Swing speed 0 – 10.0 rpm stepless Additional functions via switch or electroproportional foot pedals Swing torque 56,055 lbf ft Proportional control proportionally acting transmitters on the joy- Holding brake wet multi-disc (spring applied, pressure sticks for additional hydraulic functions released) Option pedal controlled positioning swing brake slewing gear brake Comfort 2 A 924 Heavy Lift Litronic Operator’s Cab Undercarriage Cab ROPS safety cab structure (roll-over protection Drive oversized two speed power shift transmission system) with individual windscreens or featuring with additional creeper speed, Liebherr axial a slide-in subpart under the ceiling, work head- piston motor with functional brake valve on both lights integrated in the ceiling, a door with a sides sliding window (can be opened on both sides), Pulling force 29,000 lbf large stowing and depositing possibilities, shock- Travel speed 0 – 2.2 mph stepless (creeper speed off-road) absorbing suspension, sounddamping insulat- 0 – 4.3 mph stepless (off-road) ing, tinted laminated safety glass, separate 0 – 8.1 mph stepless (creeper speed on-road) window shades for the sunroof window and 0 – 12.4 mph stepless (road travel) windscreen Driving operation automotive driving using accelerator pedal, Operator’s seat Standard air cushioned operator’s seat with 3D-adjust- cruise control function: storage of variable able armrests, headrest, lap belt, seat heater, accelerator pedal positions, both off-road and manual weight adjustment, adjustable seat on-road cushion inclination and length and mechanical Axles manual or automatic hydraulically controlled lumbar vertebrae support front axle oscillation lock Operator’s seat Comfort in addition to operator’s seat standard: lockable Service brake two circuit travel brake system with accumulator; (Option) horizontal suspension, automatic weight adjust- wet and backlash-free disc brake ment, adjustable suspension stiffness, pneu- Automatic digging brake works automatically when driving off (accelera- matic lumbar vertebrae support and passive tor pedal actuation) and when the machine is seat climatization with active coal stationary (engagement); the digging brake Operator’s seat Premium in addition to operator’s seat comfort: active engages automatically – can be coupled with (Option) electronic weight adjustment (automatic re­­ automatic swing axle lock adjustment), pneumatic low frequency suspen- Holding brake wet multi-disc (spring applied, pressure sion and active seat climatization with active released) coal and ventilator Stabilization rear stabilizer blade + front outriggers Control system joysticks with control consoles and swivel seat, rear outriggers + front stabilizer blade folding left control console rear + front outriggers Operation and displays large high-resolution operating unit, selfexplan- EW-undercarriage 9' atory, color display with touchscreen, video- compatible, numerous setting, control and monitoring options, e.g. air conditioning control, fuel consumption, machine and attachment parameters Air-conditioning automatic air-conditioning, recirculated air func- Equipment tion, fast de-icing and demisting at the press of Type high-strength steel plates at highlystressed a button, air vents can be operated via a menu; points for the toughest requirements. Complex recirculated air and fresh air filters can be easily and stable mountings of equipment and cylin- replaced and are accessible from the outside; ders heating-cooling unit, designed for extreme out- Hydraulic cylinders Liebherr cylinders with special seal system as side temperatures, sensors for solar radiation, well as shock absorption inside and outside temperatures Bearings sealed, low maintenance Complete Machine Lubrication Liebherr central lubrication system for upper- carriage and equipment, automatically Noise emission ISO 6396 LpA (inside cab) = 72 dB(A) 2000/14/EC LWA (surround noise) = 104 dB(A) A 924 Heavy Lift Litronic 3 Dimensions D E A W C H K Q1 I2 J2 H1694 M12 M2 B T4 L2 T2 B2 U4 B1 V X W Q J H1709 M M1 T1 L T4 B U6 B1 V X 4 A 924 Heavy Lift Litronic ft in Stick Two-piece boom 19' HD A 8' 3" Rear blade + front outriggers Rear + front outriggers B 9' ft in ft in ft in B1 14' V 7'5" 25'7" 25'7" B2 9' 8' 24'5" 24'5" C 10' 7" 8'8" 23'5" 23'5" D 9'11" 10' 22'6" 22'6" E 9'11" W 7'5" 10'4" 10'4" H 8' 7" 8' 10'4" 10'4" I2 1' 6" 8'8" 10'4" 10'4" J 3" 10' 10'6" 10'6" J2 1'11" X 7'5" 33'2" 33'2" K 4' 2" 8' 33'2" 33'2" L 9' 8'8" 33'2" 33'2" L2) 9' 6" 10' 33' 33' M 4' 1" M2) 4' 7" M1 4'11" Stick Mono boom 18'6" HD M12) 4'11" Rear blade + front outriggers Rear + front outriggers Q 1' 2" ft in ft in ft in Q1 10" V 7'5" 21' 8" 21' 8" T1 3' 5" 8' 21' 2" 21' 2" T2 4' 2" 8'8" 20' 8"* 20' 8"* T4 3'11" 10' 22' 8"1) 2) 22' 8"1) 2) U4 17' 7" W 7'5" 10' 8" 10' 8" U6 16' 4" 8' 10'10" 10'10" 2) Undercarriage – rear blade + front outriggers 8'8" 11'* 11'* E = Tail radius 10' 11'1) 11'1) Tires 11.00-20 X 7'5" 32' 32' 8' 32' 32' 8'8" 32'* 32'* 10' 32' 2"1) 32' 2"1) Dimensions are with equipment over steering axle * Equipment over digging axle for shorter transport dimensions 1) without quick coupler 2) tipping cylinder retracted W = Max. ground clearance including approx. 6" piping A 924 Heavy Lift Litronic 5 Backhoe Bucket with Two-Piece Boom 19' HD ft m 12 H1693 Digging Envelope 11 with quick coupler 1 2 3 4 35 Stick length ft in 7'5" 8' 8'8" 10' 10 Max. digging depth ft in 20'8" 21' 4" 22' 23'2" Max. reach at ground level ft in 32'4" 33' 33'8" 34'9" 30 9 Max. dumping height ft in 25'5" 25'11" 26'5" 27'5" Max. teeth height ft in 36'5" 36'11" 37'7" 38'5" 8 25 Min. equipment radius ft in 10'8" 10' 4" 10'2" 10'4" 7 20 6 Digging Forces 5 without quick coupler 1 2 3 4 15 Max. digging force (ISO 6015) lbf 33,384 31,406 29,652 26,707 4 lb 33,290 31,300 29,540 26,680 10 3 Max. breakout force (ISO 6015) lbf 38,128 38,128 38,128 38,128 lb 38,140 38,140 38,140 38,140 2 Max. breakout force with ripper bucket 49,098 lbf (49,160 lb) 5 1 0 0 Operating Weight -1 The operating weight includes the basic machine with 8 tires plus intermediate rings, two-piece -5 boom 19' m (HD), stick 8', quick coupler SWA 48 and bucket 55.1" / 1.77 yd3. -2 Undercarriage versions Weight (lb) -10 -3 A 924 Heavy Lift litronic` with rear blade + front outriggers 59,700 A 924 Heavy Lift litronic` with rear + front outriggers 60,400 -4 -15 -5 -6 -20 1 2 3 -7 4 -25 -8 11 10 9 8 7 6 5 4 3 2 1 0 m 35 30 25 20 15 10 5 0 ft Buckets Machine stability per ISO 10567* (75 % of tipping capacity) 1) Stabilizers Rear blade + front outriggers Rear + front outriggers raised down down Cutting width Capacity ISO 7451 Weight Stick length (ft in) Stick length (ft in) Stick length