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 HP
Engine Model
Cat® C18 ™
Net Power - SAE J1349
541 HP
Bore
5.7 in
Stroke
7.2 in
Displacement
1105 in³
Torque Rise
58 %
Rated Speed
1700/min
Emissions
U.S. EPA Tier 4 Final/EU Stage V Technology or Tier 2 Equivalent
Gross - ISO 14396
580 HP
Peak Power Speed
1500/min
Peak Power Speed - 1,500 rpm - Gross - ISO 14396
580 HP
Peak Power Speed - 1,500 rpm - Gross - SAE J1995
588 HP
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349
541 HP
Peak Torque - 1,200 rpm
2104 lb/ft

Operating Specifications

Operating Weight
139920 lb
Tipping Load - Articulated 37°
68005 lb
Tipping Load - Straight
78115 lb

Transmission

Transmission Type
Cat-Planetenlastschaltgetriebe
Forward - 1
4 mile/h
Forward - 2
7.2 mile/h
Forward - 3
12.7 mile/h
Forward - 4
21.6 mile/h
Reverse - 1
4.7 mile/h
Reverse - 2
8.3 mile/h
Reverse - 3
14.4 mile/h
Direct Drive - Forward 1
Lock-up disabled
Direct Drive - Forward 2
7.8 mile/h
Direct Drive - Forward 3
13.9 mile/h
Direct Drive - Forward 4
24.4 mile/h
Direct Drive - Reverse 1
5 mile/h
Direct Drive - Reverse 2
8.9 mile/h
Direct Drive - Reverse 3
15.8 mile/h

Axles

Front
Fixed
Rear
Trunnion
Oscillation Angle
13°

Hydraulic System - Steering

Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Relief Valve Setting - Steering
4351 psi
Maximum Flow
71.3 gal/min
Steering Cycle Times - High Idle
3.4 s
Steering Cycle Times - Low Idle
5.6 s
Total Steering Angle
74 °

Service Refill Capacities

Fuel Tank
188 gal (US)
Cooling System
31.7 gal (US)
Crankcase
15.9 gal (US)
Transmission
31.7 gal (US)
Differential - Final Drives - Front
49.1 gal (US)
Differential - Final Drives - Rear
49.1 gal (US)
Hydraulic System - Tank Only
63.4 gal (US)
Diesel Exhaust Fluid Tank
8.7 gal (US)
Hydraulic System Factory Fill
125.5 gal (US)

Forks

Fork End Area
69 ft²

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 gal/min
Pilot System
Variable displacement piston
Relief Valve Setting - Main
580 psi
Lift/Tilt System - Circuit
EH- Positive Flow Control, Flow Sharing
Relief Valve Setting - Lift/Tilt
4641 psi

Dimensions - Millyard Linkage

Dump Angle at Maximum Lift
39.4 °
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 Centerline 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 Stacks
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 ft
Rear Axle - Centerline to Bumper
10.5 ft
Wheel Base
14.9 ft

Sound Performance - Standard

Machine Sound Level (ISO 6395)
111 dB(A)
Operator Sound Level (ISO 6396)
71 dB(A)

Sound Performance - Suppression

Machine Sound Level (ISO 6395)
109 dB(A)
Operator Sound Level (ISO 6396)
70 dB(A)

Brakes

Brakes
SAE J1473 OKT90, ISO 3450:1992