Wheel Loaders

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990
990
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  • 988 XE
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UNITS:
Metric
Imperial
Engine Model
C27 Cat®
C27 Cat®
 
Cat® C32B
Cat® C32B
Rated Speed
1,800/min
1,800/min
 
1750 rpm
1750 rpm
Engine Power - ISO 14396
561 kW
752 HP
 
-
Gross Power - SAE J1995
571 kW
766 HP
 
-
Net Power - SAE J1349 - Standard Ambient
521 kW
699 HP
 
-
Net Power - SAE J1349 - High Ambient
483 kW
648 HP
 
-
Bore
137.2 mm
5.4 in
 
145 mm
5.7 in
Stroke
152.4 mm
6 in
 
162 mm
6.4 in
Displacement
27.03 l
1649.5 in³
 
32.1 l
1963.5 in³
Peak Torque - 1,200 rpm
3557 N·m
2624 lb/ft
 
-
Torque Rise
18 %
18 %
 
-
Emissions
U.S. EPA TIer 4 Final and EU Stage V emission standards or U.S. EPA Tier 2 and EU Stage II equivalent
U.S. EPA TIer 4 Final and EU Stage V emission standards or U.S. EPA Tier 2 and EU Stage II equivalent
 
U.S. EPA Tier 4 Final, U.S. EPA Tier 2 Equivalent
U.S. EPA Tier 4 Final, U.S. EPA Tier 2 Equivalent
Net Power
-
 
607 kW
814 HP
Gross Power - SAE J1995 at 1,750 rpm - Tier 4/HRC (Highly Regulated Country) - Standard
-
 
671 kW
900 HP
Gross Power - SAE J1995 at 1,750 rpm - Tier 4/HRC - High Ambient
-
 
699 kW
937 HP
Gross Power - SAE J1995 at 1,750 rpm - Tier 2/LRC (Less Regulated Country) - Standard
-
 
676 kW
907 HP
Gross Power - SAE J1995 at 1,750 rpm - Tier 2/LRC - High Ambient
-
 
704 kW
944 HP
Gross Power - ISO 14396 at 1,750 rpm - Tier 4/HRC - Standard
-
 
659 kW
884 HP
Gross Power - ISO 14396 at 1,750 rpm - Tier 4/HRC - High Ambient
-
 
687 kW
921 HP
Gross Power - ISO 14396 at 1,750 rpm - Tier 2/LRC - Standard
-
 
666 kW
893 HP
Gross Power - ISO 14396 at 1,750 rpm - Tier 2/LRC - High Ambient
-
 
694 kW
931 HP
Net Power - SAE J1349 at 1,750 rpm - Tier 4/HRC - Standard
-
 
607 kW
814 HP
Net Power - SAE J1349 at 1,750 rpm - Tier 4/HRC - High Ambient
-
 
607 kW
814 HP
Net Power - SAE J1349 at 1,750 rpm - Tier 2/LRC - Standard
-
 
614 kW
823 HP
Net Power - SAE J1349 at 1,750 rpm - Tier 2/LRC - High Ambient
-
 
614 kW
823 HP
Peak Torque - SAE J1995 - Tier 4/HRC - Standard @ 1,200 rpm
-
 
4765 N·m
3514 ft·lbf
Peak Torque - SAE J1995 - Tier 4/HRC - High Ambient @ 1,300 rpm
-
 
4820 N·m
3555 ft·lbf
Peak Torque - SAE J1995 - Tier 2/LRC - Standard @ 1,200 rpm
-
 
4796 N·m
3537 ft·lbf
Peak Torque - SAE J1995 - Tier 2/LRC - High Ambient @ 1,350 rpm
-
 
4841 N·m
3570 ft·lbf
Transmission Type
Cat planetary power shift
Cat planetary power shift
 
Cat Planetary Powershift
Cat Planetary Powershift
 
Cat Planetary Power Shift
Cat Planetary Power Shift
Forward - 1
7.3 km/h
4.5 mile/h
 
7 km/h
4.3 mile/h
 
6.8 km/h
4.2 mile/h
Forward - 2
13.3 km/h
8.3 mile/h
 
11.9 km/h
7.4 mile/h
 
11.9 km/h
7.4 mile/h
Forward - 3
22.9 km/h
14.2 mile/h
 
20.5 km/h
12.7 mile/h
 
20.5 km/h
12.7 mile/h
Reverse - 1
7.9 km/h
4.9 mile/h
 
7.5 km/h
4.7 mile/h
 
7.5 km/h
4.7 mile/h
Reverse - 2
14.7 km/h
9.1 mile/h
 
13 km/h
8.1 mile/h
 
13.1 km/h
8.1 mile/h
Reverse - 3
24.9 km/h
15.5 mile/h
 
22.4 km/h
13.9 mile/h
 
22.5 km/h
13.9 mile/h
Direct Drive - Forward 1
Lock-up disabled
Lock-up disabled
 
Disabled
Disabled
 
Lock-up disabled
Lock-up disabled
Direct Drive - Forward 2
13.7 km/h
8.5 mile/h
 
12.9 km/h
8 mile/h
 
13 km/h
8 mile/h
Direct Drive - Forward 3
24.5 km/h
15.2 mile/h
 
22.6 km/h
14 mile/h
 
22.8 km/h
14.1 mile/h
Direct Drive - Reverse 1
8.7 km/h
5.4 mile/h
 
8 km/h
5 mile/h
 
8 km/h
4.9 mile/h
Direct Drive - Reverse 2
15.4 km/h
9.6 mile/h
 
14.2 km/h
8.8 mile/h
 
14.2 km/h
8.8 mile/h
Direct Drive - Reverse 3
26.4 km/h
16.4 mile/h
 
24.7 km/h
15.3 mile/h
 
25.2 km/h
15.6 mile/h
Note
Travel speeds based on Michelin 45/65R39 LD D2**L5 tires.
Travel speeds based on Michelin 45/65R39 LD D2**L5 tires.
 
-
 
50/65-51 (364-6315) calculated speeds.
50/65-51 (364-6315) calculated speeds.
Operating Weight
80974 kg
178517 lb
 
105882 kg
233430 lb
 
-
Rated Payload - Standard
15.9 t
17.5 ton (US)
 
23.1 t
25.5 ton (US)
 
-
Rated Payload - High Lift
15.9 t
17.5 ton (US)
 
20.4 t
22.5 ton (US)
 
24.9 t
27.5 t
Bucket Capacity Range
8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³)
8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³)
 
11.5-24.5 m³ (15-32 yd³)
11.5-24.5 m³ (15-32 yd³)
 
-
Cat Truck Match - Standard
773-775
773-775
 
775/777
775/777
 
-
Cat Truck Match - High Lift
775-777
775-777
 
785
785
 
777, 785
777, 785
Rated Payload - Standard (Material Handler)
-
 
27.2 t
30 ton (US)
 
-
Rated Payload - High Lift (Material Handler)
-
 
24.5 t
27 ton (US)
 
-
Operating Weight - Tier 4 Final*
-
 
-
 
133668 kg
294687 lb
Bucket Range
-
 
-
 
12.2-23.7 m3 (16.0-31.0 yd3)
12.2-23.7 m3 (16.0-31.0 yd3)
Articulation Angle
-
 
-
 
43 °
43 °
Cat Truck Match - Standard Lift
-
 
-
 
777
777
Operating Weight - Tier 2 Equivalent*
-
 
-
 
133668 kg
294687 lb
Rated Payload - Standard Lift
-
 
-
 
27.2 t
30 t
Note
-
 
-
 
*High lift, 50/65-51 (364-6315) tires, standard cooling, 13.8 m3 (18 yd3 ) bucket (496-9912).
*High lift, 50/65-51 (364-6315) tires, standard cooling, 13.8 m3 (18 yd3 ) bucket (496-9912).
Lift/Tilt System - Circuit
Positive flow control
Positive flow control
 
Positive Flow Control
Positive Flow Control
 
Positive Flow Control
Positive Flow Control
Lift/Tilt System
Variable displacement piston
Variable displacement piston
 
-
 
-
Maximum Flow at 1,800 rpm (1)
910 l/min
240 gal/min
 
-
 
-
Cylinders, Double Acting - Lift, Bore and Stroke
235 mm × 1287 mm (9.3 in × 50.7 in)
235 mm × 1287 mm (9.3 in × 50.7 in)
 
-
 
-
Cylinders, Double Acting - Tilt, Bore and Stroke
292.1 mm × 820 mm (11.5 in × 32.3 in)
292.1 mm × 820 mm (11.5 in × 32.3 in)
 
-
 
-
Pilot System
Open loop and pressure reducing
Open loop and pressure reducing
 
-
 
-
Relief Valve Setting - Main
3500 kPa
507 psi
 
-
 
-
Relief Valve Setting - Lift/Tilt
33000 kPa
4786 psi
 
34500 kPa
5000 psi
 
29500 kPa
4200 psi
Lift/Tilt System - Pump
-
 
Variable Displacement Piston
Variable Displacement Piston
 
Variable Piston
Variable Piston
Maximum Flow at 2,165 rpm
-
 
950 l/min
250 gal/min
 
-
Lift Cylinder - Bore
-
 
235 mm
9.3 in
 
267 mm
10.5 in
Lift Cylinder - Stroke
-
 
1613 mm
63.5 in
 
1682 mm
66.2 in
Tilt Cylinder - Bore
-
 
292 mm
11.5 in
 
235 mm
9.3 in
Tilt Cylinder - Stroke
-
 
1055 mm
41.5 in
 
1040 mm
40.9 in
Cylinders - Lift/Tilt
-
 
-
 
Double-acting
Double-acting
Maximum Flow at 1,650 rpm
-
 
-
 
1180 l/min
311 gal/min
Note
-
 
-
 
High Lift configuration.
High Lift configuration.
Rack Back
4.3 s
4.3 s
 
2.3 s
2.3 s
 
2.4 s
2.4 s
Raise
8.2 s
8.2 s
 
9 s
9 s
 
9.2 s
9.2 s
Dump
2.9 s
2.9 s
 
2.6 s
2.6 s
 
1.8 s
1.8 s
Lower
3.7 s
3.7 s
 
-
 
3.8 s
3.8 s
Lower Float Down
3.6 s
3.6 s
 
-
 
3.1 s
3.1 s
Total Hydraulic Cycle Time - Empty Bucket
13.8 s
13.8 s
 
-
 
-
Rack Back - High Lift
-
 
2.3 s
2.3 s
 
-
Raise - High Lift
-
 
9 s
9 s
 
-
Dump - High Lift
-
 
2.6 s
2.6 s
 
-
Float Down
-
 
3.2 s
3.2 s
 
-
Float Down - High Lift
-
 
3.2 s
3.2 s
 
-
Total Hydraulic Cycle Time
-
 
17.1 s
17.1 s
 
17.2 s
17.2 s
Note
-
 
-
 
High Lift configuration, calculated speeds.
High Lift configuration, calculated speeds.
Steering System - Circuit
Pilot, load sensing
Pilot, load sensing
 
Pilot, Load Sensing
Pilot, Load Sensing
Steering System - Pump
Piston, variable displacement
Piston, variable displacement
 
Piston, Variable Displacement
Piston, Variable Displacement
Maximum Flow at 1,400 rpm
364 l/min
96.2 gal/min
 
-
Relief Valve Setting - Steering
34500 kPa
5004 psi
 
-
Total Steering Angle
70°
70°
 
80°
80°
Maximum Flow at 1,400-1,850 rpm
-
 
265 l/min
70 gal/min
Steering Cut Off Pressure
-
 
31000 kPa
4500 psi
Steering Cycle Times - Low Idle
-
 
4.9 s
4.9 s
Steering Cycle Times - High Idle
-
 
3.1 s
3.1 s
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 2.7 kg of refrigerant which has a CO2 equivalent of 3.861 metric tonnes (4.256 tons).
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 2.7 kg of refrigerant which has a CO2 equivalent of 3.861 metric tonnes (4.256 tons).
Front
Fixed
Fixed
 
Fixed
Fixed
Rear
Trunnion
Trunnion
 
Trunnion
Trunnion
Oscillation Angle
8.5°
8.5°
 
±9°
±9°
Brakes
ISO 3450: 2011
ISO 3450: 2011
 
ISO 3450:2011
ISO 3450:2011
Fuel Tank
1114 l
294.3 gal (US)
 
1460 l
385.7 gal (US)
Cooling System
208 l
54.9 gal (US)
 
-
Engine Crankcase
75.7 l
20 gal (US)
 
-
Transmission
110 l
29.1 gal (US)
 
195 l
51.5 gal (US)
Differential - Final Drives - Front
271 l
71.6 gal (US)
 
365 l
96.4 gal (US)
Differential - Final Drives - Rear
261 l
68.9 gal (US)
 
365 l
96.4 gal (US)
Hydraulic System Factory Fill
795 l
210 gal (US)
 
-
Hydraulic Tank - Implement and Hydraulic Fan
261 l
68.9 gal (US)
 
-
Hydraulic Tank - Steering and Braking
132 l
34.9 gal (US)
 
-
Note
All nonroad U.S. EPA Tier 4 diesel engines are required to use only Ultra Low Sulfur Diesel (ULSD) fuels containing 15 ppm (mg/kg) sulfur or less. Biodiesel blends up to B20 (20% blend by volume) are acceptable when blended with 15 ppm (mg/kg) sulfur or less ULSD. B20 should meet ASTM D7467 specification (biodiesel blend stock should meet Cat biodiesel spec, ASTM D6751 or EN 14214. Cat DEO‑ULS™ or oils that meet the Cat ECF-3, API CJ‑4, and ACEA E9 specification are required. For further fluid specifications and guidelines, visit: http://parts.cat.com/cda/files/3244668/7/SEBU6250-19.pdf.
All nonroad U.S. EPA Tier 4 diesel engines are required to use only Ultra Low Sulfur Diesel (ULSD) fuels containing 15 ppm (mg/kg) sulfur or less. Biodiesel blends up to B20 (20% blend by volume) are acceptable when blended with 15 ppm (mg/kg) sulfur or less ULSD. B20 should meet ASTM D7467 specification (biodiesel blend stock should meet Cat biodiesel spec, ASTM D6751 or EN 14214. Cat DEO‑ULS™ or oils that meet the Cat ECF-3, API CJ‑4, and ACEA E9 specification are required. For further fluid specifications and guidelines, visit: http://parts.cat.com/cda/files/3244668/7/SEBU6250-19.pdf.
 
-
Cooling Systems
-
 
225 l
59.4 gal (US)
Crankcase
-
 
120 l
31.7 gal (US)
Hydraulic System Factory Fill (Implement)
-
 
394 l
104.1 gal (US)
Hydraulic Tank - Implement
-
 
228 l
60.2 gal (US)
Hydraulic Factory Fill (Steering)
-
 
123 l
32.5 gal (US)
Hydraulic Tank (Steering Tank Only)
-
 
99.5 l
26.3 gal (US)
Operator Sound Level (ISO 6396:2008)
65.5 dB(A)
65.5 dB(A)
 
-
Machine Sound Level (ISO 6395:2008)
115 dB(A)
115 dB(A)
 
-
Note
-
 
Machine Sound Level (ISO 6396:2008) - 116 dB(A)
Machine Sound Level (ISO 6396:2008) - 116 dB(A)
Operator Sound Level (ISO 6396:2008)
65.5 dB(A)
65.5 dB(A)
 
-
Machine Sound Level (ISO 6395:2008)
113 dB(A)
113 dB(A)
 
-
Note
-
 
Machine Sound Level (ISO 6396:2008) - 113 dB(A)
Machine Sound Level (ISO 6396:2008) - 113 dB(A)
Bucket Capacities
8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³)
8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³)
 
11.5-24.5 m³ (15-32 yd³)
11.5-24.5 m³ (15-32 yd³)
Ambient Capability Hydraulically Driven Demand Fan - Standard
43 °C
109.4 °F
Ambient Capability, Hydraulically Driven Demand Fan - High
55 °C
131 °F
Ground to Top of Exhaust Stacks
5169 mm
17 ft
Ground to Top of ROPS
5571 mm
18.3 ft
Ground to Top of Hood
3983 mm
13.1 ft
Ground to Center of Front Axle
1308 mm
4.3 ft
Ground to Bumper Clearance
1145 mm
3.8 ft
Ground to Lower Hitch Clearance
666 mm
2.2 ft
Reach - Maximum Lift
2503 mm
8.2 ft
Clearance at Maximum Lift
4630 mm
15.2 ft
B-Pin Height - Maximum Lift
6948 mm
22.8 ft
Maximum Overall Height - Bucket Raised
9390 mm
30.8 ft
Rear Axle - Centerline to Bumper
4119 mm
13.5 ft
Tread Width
3302 mm
10.83 ft
Rack Back Angle - Maximum Lift
56.9 degrees
56.9 degrees
Dump Angle at Maximum Lift
-49.5 degrees
-49.5 degrees
Rack Back Angle - Ground Level
40.2 degrees
40.2 degrees
Width - Over Tires - With Bulge
4493 mm
14.74 ft
Wheel Base
5890 mm
19.3 ft
Rack Back Angle - Carry
48.9 degrees
48.9 degrees
Maximum Overall Length
15489 mm
50.8 ft
Front Axle Centerline to Bucket Tip
5480 mm
18 ft
Tread Width
3302 mm
10.83 ft
Rack Back Angle - Ground Level
42.5 degrees
42.5 degrees
Dump Angle at Maximum Lift
-48.1 degrees
-48.1 degrees
Rack Back Angle - Maximum Lift
56.2 degrees
56.2 degrees
Width - Over Tires - With Bulge
4495 mm
14.75 ft
Rack Back Angle - Carry
51.6 degrees
51.6 degrees
Ground to Top of Exhaust Stacks
5169 mm
17 ft
Ground to Top of ROPS
5571 mm
18.3 ft
Ground to Top of Hood
3983 mm
13.1 ft
Ground to Center of Front Axle
1308 mm
4.3 ft
Ground to Bumper Clearance
1145 mm
3.8 ft
Ground to Lower Hitch Clearance
666 mm
2.2 ft
Reach - Maximum Lift
2319 mm
7.6 ft
Clearance at Maximum Lift
5256 mm
17.2 ft
B-Pin Height - Maximum Lift
7465 mm
24.5 ft
Maximum Overall Height - Bucket Raised
9759 mm
32 ft
Rear Axle - Centerline to Bumper
4119 mm
13.5 ft
Wheel Base
5890 mm
19.3 ft
Maximum Overall Length
15733 mm
51.6 ft
Front Axle Centerline to Bucket Tip
5724 mm
18.8 ft
Engine Model
Cat C32B
Cat C32B
Bore
145 mm
5.7 in
Displacement
32.1 l
1959 in³
Emissions
U.S. EPA Tier 4 Final, U.S. EPA Tier 2 Equivalent
U.S. EPA Tier 4 Final, U.S. EPA Tier 2 Equivalent
Gross Power - SAE J1995
775 kW
1039 HP
Net Power - EEC 80/1269
726 kW
974 HP
Net Power - ISO 14396
764 kW
1024 HP
Net Power - ISO 9249
726 kW
974 HP
Net Power - SAE J1349
719 kW
964 HP
Peak Torque - 1,250 rpm
5470 N·m
4034 lb/ft
Rated Speed
1800 r/min
1800 r/min
Stroke
162 mm
6.4 in
Torque Rise
33%
33%
Note
Standard ambient cooling.
Standard ambient cooling.
Bore
145 mm
5.7 in
Displacement
32.1 l
1959 in³
Emissions
U.S. EPA Tier 4 Final, U.S. EPA Tier 2 Equivalent
U.S. EPA Tier 4 Final, U.S. EPA Tier 2 Equivalent
Engine Model
Cat C32B
Cat C32B
Gross Power - SAE J1995
767 kW
1029 HP
Net Power - EEC 80/1269
716 kW
960 HP
Net Power - ISO 14396
757 kW
1015 HP
Net Power - ISO 9249
716 kW
960 HP
Net Power - SAE J1349
710 kW
952 HP
Peak Torque - 1,250 rpm
5470 N·m
4034 ft-lb
Rated Speed
1800 r/min
1800 r/min
Stroke
162 mm
6.4 in
Torque Rise
33%
33%
Note
Standard ambient cooling.
Standard ambient cooling.
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