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Metric | Imperial
990K Steel Mill Wheel Loader
Large Wheel Loaders
990K Steel Mill Arrangement
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986 Wheel Loader
Large Wheel Loaders
986
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988 Wheel Loader
Large Wheel Loaders
988
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Engine Expand Collapse
Net Power
699 hp 521 kW
Engine Model
Cat® C27 ™
Cat® C15
Cat® C18
Bore
5.4 in 137.2 mm
5.4 in 137 mm
5.7 in 145 mm
Stroke
6.0 in 152.4 mm
6.75 in 171.5 mm
7.2 in 183 mm
Displacement
1649.5 in³ 27.03 l
927 in² 15.2 l
1105 in³ 18.1 l
Torque Rise
18 % 18 %
16%
58 % 58 %
Rated Speed - Gross - ISO 14396
752 hp 561 kW
Rated Speed - Net Power - SAE J1349 - High Ambient
648 hp 483 kW
Rated Speed
1800 r/min 1800 r/min
2000
1700/rpm
Rated Speed - Net Power - SAE J1349 - Standard Ambient
699 hp 521 kW
Emissions
Entspricht EPA Tier 4 Final/Tier 2 (USA)
Peak Torque - 1,200 rpm
2624 lb/ft 3557 N·m
2104 lbf·ft 2852 N·m
Gross - ISO 14396
752 hp 561 kW
Net Power - SAE J1349:2011
699 hp 521 kW
373 hp 278 kW
538 hp 401 kW
Rated Speed - Gross - SAE J1995
766 hp 571 kW
Operating Weight
204693 lb 92848 kg
112574 lb 51062 kg
Rated Payload
17.5 t 15.88 t
Bucket Capacity Range
8.6 m3-9.2 m3 (11.25 yd3-12.0 yd3)
5.0-10.3 m³ (6.5-13.5 yd³)
4.7-13 m3 (6.2-17 yd3)
Rated Payload - Standard
17.5 t 15.88 t
Cat Truck Match - Standard
773-775
770/735/740/745
770 - 772
Transmission Type
Cat-Planetenlastschaltgetriebe
Cat planetary power shift
Cat planetary powershift
Forward - 1
4.5 mile/h 7.3 km/h
5 mile/h 7.3 km/h
4.0 mile/h 6.5 km/h
Forward - 2
8.3 mile/h 13.3 km/h
8 mile/h 12.2 km/h
7.2 mile/h 11.6 km/h
Forward - 3
14.2 mile/h 22.9 km/h
12.7 mile/h 20.4 km/h
Reverse - 1
4.9 mile/h 7.9 km/h
5 mile/h 7.6 km/h
4.7 mile/h 7.5 km/h
Reverse - 2
9.1 mile/h 14.7 km/h
8 mile/h 13.6 km/h
8.3 mile/h 13.3 km/h
Reverse - 3
15.5 mile/h 24.9 km/h
14.4 mile/h 23.2 km/h
Direct Drive - Reverse 1
5.4 mile/h 8.7 km/h
5.0 mile/h 8.0 km/h
Direct Drive - Reverse 2
9.6 mile/h 15.4 km/h
9 mile/h 14.1 km/h
8.9 mile/h 14.3 km/h
Direct Drive - Forward 2
8.5 mile/h 13.7 km/h
8 mile/h 12.7 km/h
7.8 mile/h 12.5 km/h
Direct Drive - Reverse 3
16.4 mile/h 26.4 km/h
16 mile/h 25 km/h
15.8 mile/h 25.5 km/h
Direct Drive - Forward 3
15.2 mile/h 24.5 km/h
14 mile/h 22 km/h
13.9 mile/h 22.3 km/h
Direct Drive - Forward 1
Lock-up disabled
Lock-up disabled
Note
Travel speeds based on Michelin 45/65R39 LD D2**L5 tires.
  • All dimensions are approximate.
  • Specifications are calculated with a 6.1 m³ (8.0 yd³) rock bucket.
• All non-road Tier 4 Final/Stage V diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: – 20% biodiesel FAME (fatty acid methyl ester)* – 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. • Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).** • For pre-Tier 4 engines: Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: – 100% biodiesel FAME (fatty acid methyl ester)* – 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. * For use of blends higher than 20% biodiesel, consult your Cat dealer. ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.
Relief Valve Setting - Lift/Tilt
4786 psi 33000 kPa
4050 psi 27900 kPa
4757 psi 32800 kPa
Cylinders, Double Acting - Tilt, Bore and Stroke
317.5 mm × 819 mm (12.5 in × 32.2 in)
266 mm × 685 mm (8.7 in × 27 in)
Lift/Tilt System
Variable displacement piston
Maximum Flow at 1,800 rpm (1)
22.2 gpm 84 L/min
Relief Valve Setting - Main
507 psi 3500 kPa
551 psi 3800 kPa
Maximum Flow at 1,800 rpm (2)
216 gpm 817 L/min
Lift/Tilt System - Circuit
Positive flow control
Load Sense
EH- Positive Flow Control, Flow Sharing
Pilot System
Open loop and pressure reducing
Variable displacement piston
Cylinders, Double Acting - Lift, Bore and Stroke
254 mm × 1264 mm (10.0 in × 49.8 in)
210 mm × 1050 mm (8.7 in × 41.3 in)
Fuel Tank
294.3 gal (US) 1114 l
141 gal (US) 535 l
188 gal (US) 712 l
Cooling System
54.9 gal (US) 208 l
31.7 gal (US) 120 l
Transmission
29.1 gal (US) 110 l
20 gal (US) 75 l
24.3 gal (US) 92 l
Differential - Final Drives - Rear
68.9 gal (US) 261 l
49.1 gal (US) 186 l
Hydraulic Tank - Steering and Braking
34.9 gal (US) 132 l
Differential - Final Drives - Front
71.6 gal (US) 271 l
49.1 gal (US) 186 l
Engine Crankcase
20.0 gal (US) 75.7 l
Hydraulic Tank - Implement and Hydraulic Fan
68.9 gal (US) 261 l
Hydraulic System Factory Fill
210.0 gal (US) 795 l
87 gal (US) 330 l
125.5 gal (US) 475 l
Bucket Capacities
8.6-9.2 m3 (11.2-12.0 yd3)
Front
Fixed
Fixed
Fixed
Rear
Trunnion
Trunnion
Trunnion
Oscillation Angle
8.5°
±12.5°
13 °
Brakes
SAE J1473 OKT90, ISO 3450:1992
ISO 3450:2011
ISO 3450:2011
Relief Valve Setting - Steering
4641 psi 32000 kPa
4351 psi 30000 kPa
Steering System - Pump
Piston, variable displacement
Piston, variable displacement
Piston, variable displacement
Maximum Flow at 1,400 rpm
94.5 gpm 358 L/min
52 gpm 200 L/min
Steering System - Circuit
Pilot, load sensing
Load Sense
Pilot, load sensing
Total Steering Angle
70°
70°
86 °
Raise
9.4 s 9.4 s
9 s 9 s
8.0 s 8.0 s
Dump
2.9 s 2.9 s
3.5 s 3.5 s
2.2 s 2.2 s
Rack Back
4.8 s 4.8 s
4.5 s 4.5 s
4.5 s 4.5 s
Lower
3.7 s 3.7 s
5.2 s 5.2 s
Lower Float Down
3.6 s 3.6 s
4.3 s 4.3 s
3.5 s 3.5 s
Total Hydraulic Cycle Time - Empty Bucket
15.9 s 15.9 s
18.2 s 18.2 s
Operator Sound Level (ISO 6396:2008)
69 dB(A) 69 dB(A)
Machine Sound Level (ISO 6395:2008)
115 dB(A) 115 dB(A)
Machine Sound Level (ISO 6395:2008)
115 dB(A) 115 dB(A)
Operator Sound Level (ISO 6396:2008)
69 dB(A) 69 dB(A)
Reach - Maximum Lift
7.2 ft 2193 mm
7.1 ft 2175 mm
6.5 ft 1981 mm
Ground to Top of ROPS
17.2 ft 5240 mm
13.5 ft 4100 mm
13.8 ft 4202 mm
Clearance at Maximum Lift
13.4 ft 4077 mm
10.1 ft 3079 mm
11.9 ft 3641 mm
Maximum Overall Length
41.8 ft 12733 mm
36.6 ft 11143 mm
39.3 ft 11991 mm
Ground to Top of Hood
12.7 ft 3862 mm
10.7 ft 3270 mm
10.9 ft 3334 mm
Wheel Base
15.1 ft 4600 mm
12.5 ft 3810 mm
14.9 ft 4550 mm
Ground to Lower Hitch Clearance
2.0 ft 596 mm
1.5 ft 459 mm
1.9 ft 568 mm
B-Pin Height - Maximum Lift
19.2 ft 5867 mm
16.1 ft 4912 mm
18.0 ft 5485 mm
Rear Axle - Centerline to Bumper
12.5 ft 3795 mm
10.3 ft 3132 mm
10.5 ft 3187 mm
Ground to Center of Front Axle
3.9 ft 1186 mm
3.2 ft 978 mm
Ground to Bumper Clearance
3.5 ft 1079 mm
Dump Angle at Maximum Lift
47.4 degrees
Rack Back Angle - Carry
48.8 degrees
Front Axle Centerline to Bucket Tip
14.2 ft 4338 mm
13.8 ft 4201 mm
14 ft 4254 mm
Rack Angle at Maximum Lift
63.7 degrees
Maximum Overall Height - Bucket Raised
27.0 ft 8231 mm
22.4 ft 6817 mm
24.5 ft 7455 mm
Ground to Top of Exhaust Stacks
16.6 ft 5049 mm
13.3 ft 4060 mm
14.8 ft 4521 mm
Rack Back Angle - Ground Level
40.4 degrees
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