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988K Millyard Arrangement

988K Millyard Arrangement

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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. The 988K Millyard Arrangement is designed to meet the demands of millyard applications. The features of the 988K Millyard work together to provide a durable and reliable machine to meet the needs of the modern millyard.

Engine

Net Power
541.0 hp
Engine Model
Cat® C18 ACERT™
Net Power - SAE J1349
541.0 hp
Bore
5.7 in
Stroke
7.2 in
Displacement
1105.0 in3
Torque Rise
58.0 %
Rated Speed
1,700 rpm
Emissions
U.S. EPA Tier 4 Final/EU Stage IV Technology or Tier 2 Equivalent
Gross (ISO 14396)
580.0 hp
Peak Power Speed
1,500 rpm
Peak Power Speed @ 1,500 rpm: Gross - ISO 14396
580.0 hp
Peak Power Speed @ 1,500 rpm: Gross - SAE J1995
588.0 hp
Peak Power Speed @ 1,500 rpm: Net Power - SAE J1349
541.0 hp
Peak Torque @ 1,200 rpm
2104.0 lb ft

Forks

Fork End Area
69.0 ft2

Operating Specifications

Operating Weight
139920.0 lb
Tipping Load - Articulated 37°
68005.0 lb
Tipping Load - Straight
78115.0 lb

Transmission

Transmission Type
Cat planetary power shift
Forward 1
4.0 mph
Forward 2
7.2 mph
Forward 3
12.7 mph
Forward 4
21.6 mph
Reverse 1
4.7 mph
Reverse 2
8.3 mph
Reverse 3
14.4 mph
Direct Drive - Forward 1
Lock-up disabled
Direct Drive - Forward 2
7.8 mph
Direct Drive - Forward 3
13.9 mph
Direct Drive - Forward 4
24.4 mph
Direct Drive - Reverse 1
5.0 mph
Direct Drive - Reverse 2
8.9 mph
Direct Drive - Reverse 3
15.8 mph

Hydraulic System - Lift/Tilt

Cylinders, Double Acting: Lift, Bore and Stroke
235 mm × 976 mm (9.25 in × 38.4 in)
Cylinders, Double Acting: Tilt, Bore and Stroke
292 mm × 671 mm (11.5 in × 26.4 in)
Lift/Tilt System
Variable displacement piston
Maximum Flow
13.7 gal/min
Maximum Flow at 1,400-1,860 rpm
153.0 gal/min
Pilot System
Variable displacement piston
Relief Valve Setting
580.0 psi
Lift/Tilt System - Circuit
EH- Positive Flow Control, Flow Sharing
Relief Valve Setting - Lift/Tilt
4641.0 psi

Service Refill Capacities

Fuel Tank
188.0 gal
Cooling System
31.7 gal
Crankcase
15.9 gal
Transmission
31.7 gal
Differentials and Final Drives - Front
49.1 gal
Differentials and Final Drives - Rear
49.1 gal
Hydraulic System (tank only)
63.4 gal
Diesel Exhaust Fluid Tank
8.7 gal
Hydraulic System Factory Fill
125.5 gal

Dimensions - Millyard Linkage

Dump Angle at Maximum Lift
39.4 Degrees
Fork Height at Maximum Lift
15.3 ft
Fork Height with Level Arms
8.1 ft
Fork Top Clamp Opening
12.3 ft
Front Axle Center Line to Fork Tip
15.6 ft
Ground to Bumper Clearance
3.1 ft
Ground to Center of Front Axle
3.2 ft
Ground to Lower Hitch Clearance
1.9 ft
Ground to Top of Exhaust Stack
13.8 ft
Ground to Top of Hood
10.9 ft
Ground to Top of ROPS
13.8 ft
Hinge Pin Height at Maximum Lift
16.1 ft
Maximum Overall Length
41.0 ft
Rear Axle Center Line to Bumper
10.5 ft
Wheelbase
14.9 ft

Axles

Front
Fixed
Rear
Trunnion
Oscillation Angle
13°

Brakes

Brakes
SAE J1473 OCT90, ISO 3450:1992

Hydraulic System - Steering

Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Relief Valve Setting - Steering
4351.0 psi
Maximum Flow
71.3 gal/min
Steering Cycle Time (high idle)
3.4 Seconds
Steering Cycle Time (low idle)
5.6 Seconds
Total Steering Angle
74.0 Degrees

Sound Performance - Standard

Machine Sound Level (ISO 6395)
111.0 dB(A)
Operator Sound Level (ISO 6396)
71.0 dB(A)

Sound Performance - Suppression

Machine Sound Level (ISO 6395)
109.0 dB(A)
Operator Sound Level (ISO 6396)
70.0 dB(A)