Caterpillar 988K Millyard Arrangement Wheel Loader Specs

Category: Wheel Loaders ➔
Manufacturer: Caterpillar ➔
Model: 988K Millyard Arrangement ➔

Axles

Caterpillar 988K Millyard Arrangement Wheel Loader Axles specifications
Front	Fixed
Oscillation Angle	13 degrees
Rear	Trunnion

Brakes

Caterpillar 988K Millyard Arrangement Wheel Loader Brakes specifications
Brakes	SAE J1473 OCT90, ISO 3450:1992

Dimensions - Millyard Linkage

Caterpillar 988K Millyard Arrangement Wheel Loader Dimensions - Millyard Linkage specifications
Dump Angle At Maximum Lift	39.4 degrees
Fork Height At Maximum Lift	15.30 ft (4.66 m)
Fork Height With Level Arms	8.10 ft (2.47 m)
Fork Top Clamp Opening	12.30 ft (3.75 m)
Front Axle Centerline To Fork Tip	15.60 ft (4.75 m)
Ground To Bumper Clearance	3.10 ft (0.94 m)
Ground To Center Of Front Axle	3.20 ft (0.98 m)
Ground To Lower Hitch Clearance	1.90 ft (0.58 m)
Ground To Top Of Exhaust Stacks	13.80 ft (4.21 m)
Ground To Top Of Hood	10.90 ft (3.32 m)
Ground To Top Of Rops	13.80 ft (4.21 m)
Hinge Pin Height At Maximum Lift	16.10 ft (4.91 m)
Maximum Overall Length	41.00 ft (12.50 m)
Rear Axle - Centerline To Bumper	10.50 ft (3.20 m)
Wheel Base	14.90 ft (4.54 m)

Engine

Caterpillar 988K Millyard Arrangement Wheel Loader Engine specifications
Bore	5.70 in (14.48 cm)
Displacement	1,105.00 cu in (18,107.75 cu cm)
Emissions	U.S. EPA Tier 4 Final/EU Stage IV Technology or Tier 2 Equivalent
Engine Model	Cat C18 ACERT
Gross - Iso 14396	580.00 hp (432.51 kw)
Net Power	541.00 hp (403.43 kw)
Net Power - Sae J1349	541.00 hp (403.43 kw)
Peak Power Speed	1,500 rpm
Peak Power Speed - 1,500 Rpm - Gross - Iso 14396	580.00 hp (432.51 kw)
Peak Power Speed - 1,500 Rpm - Gross - Sae J1995	588.00 hp (438.48 kw)
Peak Power Speed - 1,500 Rpm - Net Power - Sae J1349	541.00 hp (403.43 kw)
Peak Torque - 1,200 Rpm	2,104.00 lbs ft (2,852.60 nm)
Rated Speed	1700 rpm
Stroke	7.20 in (18.29 cm)
Torque Rise	58 %

Forks

Caterpillar 988K Millyard Arrangement Wheel Loader Forks specifications
Fork End Area	69 ft2

Hydraulic System - Lift/Tilt

Caterpillar 988K Millyard Arrangement Wheel Loader Hydraulic System - Lift/Tilt specifications
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
Lift/Tilt System - Circuit	EH- Positive Flow Control, Flow Sharing
Maximum Flow	13.70 gpm (51.85 lpm)
Maximum Flow At 1,400-1,860 Rpm	153.00 gpm (579.11 lpm)
Pilot System	Variable displacement piston
Relief Valve Setting	580 psi
Relief Valve Setting - Lift/Tilt	4641 psi

Hydraulic System - Steering

Caterpillar 988K Millyard Arrangement Wheel Loader Hydraulic System - Steering specifications
Maximum Flow	71.30 gpm (269.87 lpm)
Relief Valve Setting - Steering	4351 psi
Steering Cycle Times - High Idle	3.4 s
Steering Cycle Times - Low Idle	5.6 s
Steering System - Circuit	Pilot, load sensing
Steering System - Pump	Piston, variable displacement
Total Steering Angle	74 degrees

Operating Specifications

Caterpillar 988K Millyard Arrangement Wheel Loader Operating Specifications specifications
Tipping Load - Articulated 37 Degrees	68,005.00 lbs (30,846.59 kg)
Tipping Load - Straight	78,115.00 lbs (35,432.41 kg)

Operational

Caterpillar 988K Millyard Arrangement Wheel Loader Operational specifications
Operating Weight	139,920.00 lbs (63,466.72 kg)

Service Refill Capacities

Caterpillar 988K Millyard Arrangement Wheel Loader Service Refill Capacities specifications
Cooling System	31.70 gal (119.98 l)
Crankcase	15.90 gal (60.18 l)
Diesel Exhaust Fluid Tank	8.70 gal (32.93 l)
Differential - Final Drives - Front	49.10 gal (185.84 l)
Differential - Final Drives - Rear	49.10 gal (185.84 l)
Fuel Tank	188.00 gal (711.58 l)
Hydraulic System - Tank Only	63.40 gal (239.97 l)
Hydraulic System Factory Fill	125.50 gal (475.02 l)
Transmission	31.70 gal (119.98 l)

Sound Performance - Standard

Caterpillar 988K Millyard Arrangement Wheel Loader Sound Performance - Standard specifications
Machine Sound Level (Iso 6395)	111 dB(A)
Operator Sound Level (Iso 6396)	71 dB(A)

Sound Performance - Suppression

Caterpillar 988K Millyard Arrangement Wheel Loader Sound Performance - Suppression specifications
Machine Sound Level (Iso 6395)	109 dB(A)
Operator Sound Level (Iso 6396)	70 dB(A)

Transmission

Caterpillar 988K Millyard Arrangement Wheel Loader Transmission specifications
Direct Drive - Forward 1	Lock-up disabled
Direct Drive - Forward 2	7.80 mph (12.55 kph)
Direct Drive - Forward 3	13.90 mph (22.37 kph)
Direct Drive - Forward 4	24.40 mph (39.27 kph)
Direct Drive - Reverse 1	5.00 mph (8.05 kph)
Direct Drive - Reverse 2	8.90 mph (14.32 kph)
Direct Drive - Reverse 3	15.80 mph (25.43 kph)
Forward - 1	4.00 mph (6.44 kph)
Forward - 2	7.20 mph (11.59 kph)
Forward - 3	12.70 mph (20.44 kph)
Forward - 4	21.60 mph (34.76 kph)
Reverse - 1	4.70 mph (7.56 kph)
Reverse - 2	8.30 mph (13.36 kph)
Reverse - 3	14.40 mph (23.17 kph)
Transmission Type	Cat planetary power shift

Our Main Office

Construction Equipment Guide
470 Maryland Drive
Fort Washington, PA 19034
800-523-2200

About Us

Construction Equipment Guide covers the nation with its four regional newspapers, offering construction and industry news and information along with new and used construction equipment for sale from dealers in your area. Now we extend those services and information to the internet. Making it as easy as possible to find the news and equipment that you need and want.

Contents Copyrighted 2026, by Construction Equipment Guide, which is a Registered Trademark, registered in the U.S. Patent Office. Registration number 0957323. All rights reserved, nothing may be reprinted or reproduced (including framing) in whole or part without written permission from the publisher. All editorial material, photographs, drawings, letters, and other material will be treated as unconditionally assigned for publication and copyright purposes and are subject to Construction Equipment Guide’s unrestricted right to edit and comment editorially. Contributor articles do not necessarily reflect the policy or opinions of this publication.

Read our privacy policy here.
Mastodon