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973K Track Loader

973K Track Loader

At a Glance

Flywheel Power
275 HP
Operating Weight
63900 lb
Capacity - General Purpose
4.2 yd³
Engine Model
Cat C9.3 ACERT
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Save money and transport time with one rugged machine for land clearing, digging, grading, truck loading, slope work and more. Crawler loaders give you reduced ground pressure and better traction so you can start the job earlier and work longer in soft underfoot conditions. Purpose-built Waste Handler, Steel Mill and Low Ground Pressure configurations stand up to the toughest applications. This new generation of Cat® Track Loaders brings you all of this, plus improved performance and fuel efficiency.
For complete machine specifications and available configurations, please see your Cat dealer or visit


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Flywheel Power 275HP
Engine Model Cat C9.3 ACERT
Net Power - ISO 9249/SAE J1349 (DIN) 278HP
Net Power - ISO 9249/SAE J1349 275HP
Note (1) All nonroad Tier 4 Interim and Final, Stage IIIB and IV and Korea Tier 4 Final diesel engines are required to use only Ultra Low Sulfur Diesel (ULSD) with 15 ppm (mg/kg) of sulfur or less, or up to B20 biodiesel blended with ULSD. B20 should meet ASTM D74
Note (2) Diesel Exhaust Fluid (DEF) used in Cat Selective Catalytic Reduction (SCR) systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241.
Emissions Tier 4 Final/Stage IV/Korea Tier 4


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Operating Weight 63900lb
Operating Weight - Waste Handler 64319lb
Operating Weight - Steel Mill 72102lb
Operating Weight - Wide Gauge 71218lb


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Capacity - General Purpose 4.2yd³
Capacity - Performance Series 5yd³
Width - General Purpose 117in
Width - Performance Series 117in
Width - Multi-Purpose 116in
Width - Landfill 117in
Width - Slag 112in
Capacity - Landfill 6.4yd³
Capacity - Multi-Purpose 4yd³
Capacity - Slag 4yd³


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Track on Ground 115.3in
Track Gauge 85in
Track Rollers/Shoes - Each Side Jul-40
Ground Pressure* - Standard Shoe - 550 mm (21.6 in) 11.3psi
Ground Pressure* - Optional Shoe - 675 mm (26.6 in) 9.3psi
Ground Pressure* - Wide Gauge - 830 mm (32.7 in) 8.3psi
Ground Contact Area* - Optional Shoe - 675 mm (26.6 in) 6960in²
Ground Contact Area* - Standard Shoe - 550 mm (21.6 in) 5673in²
Ground Contact Area* - Wide Gauge - 830 mm (32.7 in) 8572in²
Track Shoe Width - Optional 26.6in
Track Shoe Width - Standard 21.6in
Track Shoe Width - Wide Gauge 32.7in
Grouser Height - Double Grouser 1.92in
Note *ISO 16754:2008.

Service Refill Capacities

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Fuel Tank 101.5gal (US)
DEF Tank 9.2gal (US)


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Overall Machine Width without Bucket: With Standard Tracks - 550 mm (21.6 in) Shoes 106.7in
Machine Height - Top of Cab 138.2in
Overall Machine Length* 298.4in
Carry Position Approach Angle 15°
Digging Depth* 6.2in
Maximum Rollback - Ground/Carry Position 43°/47°
Bucket Height - Carry Position 19in
Reach at Full Lift Height and 45° Dump* 53.8in
Clearance at Full Lift Height and 45° Dump* 116.2in
Maximum Rollback/Dump - Fully Raised 59°/49°
Grading Angle 85°
Ground Clearance 18.5in
Height - Bucket Hinge Pin 166.1in
Height - Top of Stack 120.8in
Note *With General Purpose bucket and heavy duty teeth.
Overall Machine Height - Bucket Fully Raised 226.5in
Ramp Angle 29°

Air Conditioning System

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Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.89 kg of refrigerant which has a CO2 equivalent of 2.717 metric tonnes.