Bobcat T590 Specifications & Workshop Service Guide
The Bobcat T590 is a compact track loader produced during 2012-2023, powered by a 66-horsepower Doosan D24 Tier 4 Final Turbo diesel engine. It features an operating weight of 7,822 lbs (3,548 kg), a rated operating capacity of 2,100 lbs (953 kg, SAE J818), and an auxiliary hydraulic flow of 17.1 GPM at 3500 PSI (34.9 HHP).
Engine & Powertrain
- Engine Model
- Doosan D24 Tier 4 Final Turbo
- Gross Output
- 66 HP
- Crankcase Oil
- 9.5 qts (15W-40 CK-4 Low SAPS)
- Cooling System
- 13.5 qts (50/50 Ethylene Glycol)
Hydraulic Circuit & Flow
- Auxiliary Flow
- 17.1 GPM (Standard Flow)
- Relief Pressure
- 3500 PSI
- Hydraulic HP
- 34.9 HHP (GPM × PSI / 1714)
- Reservoir Capacity
- 9.8 US Gal (Bobcat Superior SH Synthetic Blend)
- Total System Vol
- 14.5 US Gal (Includes cylinders)
- Drive Chain Case
- 0.0 US Gal (N/A (Planetary Final Drives: SAE 80W-90, 0.8 qt per side))
Wix / Donaldson OEM Filter Cross-Reference
Standard fluid and filter change requires exactly 9.8 US gallons to reach the center of the sight glass. Never overfill.
Hydraulic cylinders and lines hold approximately 4.7 US gallons. Total system capacity for dry rebuilds is 14.5 US gallons.
The chain case holds 0.0 US gallons of N/A (Planetary Final Drives: SAE 80W-90, 0.8 qt per side). It is completely isolated from the hydraulic circuit.
Bobcat T590 Technical Service Overview
Field service operations on the Bobcat T590 require adherence to manufacturer hydraulic pressure relief tolerances (3500 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 |
|---|---|---|---|
| Bobcat T590 Rated Operating Capacity | SAE J818 Technical Specification Standard ↗ | 2,100 lbs (953 kg) | |
| Factory Service Manual Publication | Bobcat T590 Track Loader Service Manual Pub #6989714 (Auxiliary Quick Couplers) | Verified Factory Documentation | |
| Hydraulic Reservoir Service Capacity | Bobcat T590 Lubrication Specification Table | 9.8 US Gallons (Bobcat Superior SH Synthetic Blend) | |
| Doosan D24 Tier 4 Final Turbo Engine Output | Engine Manufacturer Service & Workshop Data | 66 Gross HP (9.5 qts 15W-40 CK-4 Low SAPS) |
Frequently Asked Technical Questions
Authoritative mechanical and operational answers verified against OEM shop manuals.
What is the rated operating capacity (ROC) of the Bobcat T590?
Under SAE J818 standards (50% of tipping load for wheeled loaders or 35% for tracked loaders), the Bobcat T590 has a Rated Operating Capacity of 2,100 lbs (953 kg). The static tipping load is 6,000 lbs (2,722 kg). Always operate within rated parameters to prevent rollover hazards.
What hydraulic fluid and reservoir capacity does the Bobcat T590 use?
The Bobcat T590 hydraulic reservoir requires 9.8 US gallons (37.1 Liters) of Bobcat Superior SH Synthetic Blend. The complete system capacity with cylinders and coolers holds 14.5 US gallons.
What engine powers the Bobcat T590 and what are the service intervals?
The Bobcat T590 is powered by a Doosan D24 Tier 4 Final Turbo diesel producing 66 gross horsepower. The crankcase requires 9.5 quarts (9.0 Liters) of 15W-40 CK-4 Low SAPS. Oil changes are recommended every 100 to 250 operating hours based on duty cycle.
Where is the serial number located on the Bobcat T590?
Chassis stamp inside rear engine door frame.
What Wix filters fit the Bobcat T590?
Primary cross-references for the Bobcat T590 are: Engine Oil: Wix 57098 / Donaldson P550928; Hydraulic: Wix 57240 / Donaldson P568666; Fuel: Wix 33397 / Donaldson P550385; Outer Air: Wix 46562 / Donaldson P827653. Always verify thread pitch and seal diameter prior to spin-on installation.