Caterpillar 259D3 Specifications & Workshop Service Guide
The Caterpillar 259D3 is a compact track loader produced during 2019-Present, powered by a 74.3-horsepower Cat C3.3B DIT Turbocharged Diesel diesel engine. It features an operating weight of 8,987 lbs (4,076 kg), a rated operating capacity of 2,010 lbs (912 kg, SAE J818), and an auxiliary hydraulic flow of 20.0 GPM at 3335 PSI (38.9 HHP).
Engine & Powertrain
- Engine Model
- Cat C3.3B DIT Turbocharged Diesel
- Gross Output
- 74.3 HP
- Crankcase Oil
- 11.6 qts (Cat DEO-ULS 15W-40 (API CK-4))
- Cooling System
- 14.8 qts (50/50 Ethylene Glycol)
Hydraulic Circuit & Flow
- Auxiliary Flow
- 20.0 GPM (Standard Flow)
- Relief Pressure
- 3335 PSI
- Hydraulic HP
- 38.9 HHP (GPM × PSI / 1714)
- Reservoir Capacity
- 13.7 US Gal (Cat HYDO Advanced 10 / ISO VG 46)
- Total System Vol
- 18.0 US Gal (Includes cylinders)
- Drive Chain Case
- 0.0 US Gal (N/A (Track Final Drive Planetary: Cat FDAO / SAE 50, 0.8 qt each))
Wix / Donaldson OEM Filter Cross-Reference
Standard fluid and filter change requires exactly 13.7 US gallons to reach the center of the sight glass. Never overfill.
Hydraulic cylinders and lines hold approximately 4.3 US gallons. Total system capacity for dry rebuilds is 18.0 US gallons.
The chain case holds 0.0 US gallons of N/A (Track Final Drive Planetary: Cat FDAO / SAE 50, 0.8 qt each). It is completely isolated from the hydraulic circuit.
Caterpillar 259D3 Technical Service Overview
Field service operations on the Caterpillar 259D3 require adherence to manufacturer hydraulic pressure relief tolerances (3335 PSI) and torque specifications. When performing standard 250-hour preventative maintenance, always verify hydraulic filter condition, check drive chain tension, and inspect high-pressure auxiliary couplers for mechanical wear or weeping seals.
Empirical Engineering & Statutory Verification Matrix
All tolerances and fluid formulas cross-checked against primary heavy machinery standards.
| Engineering Parameter | Authoritative Source | Authority Body | Factory Tolerance / Rule |
|---|---|---|---|
| Caterpillar 259D3 Rated Operating Capacity | SAE J818 Technical Specification Standard ↗ | 2,010 lbs (912 kg) | |
| Factory Service Manual Publication | Caterpillar Operation & Maintenance Manual SEBU9084-04 (C3.3B DIT Turbo) | Verified Factory Documentation | |
| Hydraulic Reservoir Service Capacity | Caterpillar 259D3 Lubrication Specification Table | 13.7 US Gallons (Cat HYDO Advanced 10 / ISO VG 46) | |
| Cat C3.3B DIT Turbocharged Diesel Engine Output | Engine Manufacturer Service & Workshop Data | 74.3 Gross HP (11.6 qts Cat DEO-ULS 15W-40 (API CK-4)) |
Frequently Asked Technical Questions
Authoritative mechanical and operational answers verified against OEM shop manuals.
What is the rated operating capacity (ROC) of the Caterpillar 259D3?
Under SAE J818 standards (50% of tipping load for wheeled loaders or 35% for tracked loaders), the Caterpillar 259D3 has a Rated Operating Capacity of 2,010 lbs (912 kg). The static tipping load is 5,745 lbs (2,606 kg). Always operate within rated parameters to prevent rollover hazards.
What hydraulic fluid and reservoir capacity does the Caterpillar 259D3 use?
The Caterpillar 259D3 hydraulic reservoir requires 13.7 US gallons (51.9 Liters) of Cat HYDO Advanced 10 / ISO VG 46. The complete system capacity with cylinders and coolers holds 18.0 US gallons.
What engine powers the Caterpillar 259D3 and what are the service intervals?
The Caterpillar 259D3 is powered by a Cat C3.3B DIT Turbocharged Diesel diesel producing 74.3 gross horsepower. The crankcase requires 11.6 quarts (11.0 Liters) of Cat DEO-ULS 15W-40 (API CK-4). Oil changes are recommended every 100 to 250 operating hours based on duty cycle.
Where is the serial number located on the Caterpillar 259D3?
PIN plate on rear left corner of operator cab and stamped undercarriage rail.
What Wix filters fit the Caterpillar 259D3?
Primary cross-references for the Caterpillar 259D3 are: Engine Oil: Wix 57098 / Cat 1R-1804; Hydraulic: Wix 57240 / Cat 430-8260; Fuel: Wix 33397 / Cat 1R-0793; Outer Air: Wix 46562 / Cat 110-6326. Always verify thread pitch and seal diameter prior to spin-on installation.