Bobcat 863 Specifications & Workshop Service Guide
The Bobcat 863 is a skid steer loader produced during 1997-2003, powered by a 73-horsepower Deutz BF4M1011F Oil-Cooled Turbo diesel engine. It features an operating weight of 7,045 lbs (3,196 kg), a rated operating capacity of 1,900 lbs (862 kg, SAE J818), and an auxiliary hydraulic flow of 18.0 GPM at 3000 PSI (31.5 HHP).
Engine & Powertrain
- Engine Model
- Deutz BF4M1011F Oil-Cooled Turbo
- Gross Output
- 73 HP
- Crankcase Oil
- 11.0 qts (15W-40 Heavy Duty Diesel)
- Cooling System
- 0.0 qts (50/50 Ethylene Glycol)
Hydraulic Circuit & Flow
- Auxiliary Flow
- 18.0 GPM (Standard Flow)
- Relief Pressure
- 3000 PSI
- Hydraulic HP
- 31.5 HHP (GPM × PSI / 1714)
- Reservoir Capacity
- 12.0 US Gal (Bobcat All-Season / ISO VG 46 Anti-Wear)
- Total System Vol
- 15.5 US Gal (Includes cylinders)
- Drive Chain Case
- 9.0 US Gal (SAE 10W-30 Motor Oil)
Wix / Donaldson OEM Filter Cross-Reference
Standard fluid and filter change requires exactly 12.0 US gallons to reach the center of the sight glass. Never overfill.
Hydraulic cylinders and lines hold approximately 3.5 US gallons. Total system capacity for dry rebuilds is 15.5 US gallons.
The chain case holds 9.0 US gallons of SAE 10W-30 Motor Oil. It is completely isolated from the hydraulic circuit.
Bobcat 863 Technical Service Overview
Field service operations on the Bobcat 863 require adherence to manufacturer hydraulic pressure relief tolerances (3000 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 863 Rated Operating Capacity | SAE J818 Technical Specification Standard ↗ | 1,900 lbs (862 kg) | |
| Factory Service Manual Publication | Bobcat 863 / 863H Service Manual Pub #6900249 (Deutz BF4M1011F & Hydraulics) | Verified Factory Documentation | |
| Hydraulic Reservoir Service Capacity | Bobcat 863 Lubrication Specification Table | 12.0 US Gallons (Bobcat All-Season / ISO VG 46 Anti-Wear) | |
| Deutz BF4M1011F Oil-Cooled Turbo Engine Output | Engine Manufacturer Service & Workshop Data | 73 Gross HP (11.0 qts 15W-40 Heavy Duty Diesel) |
Frequently Asked Technical Questions
Authoritative mechanical and operational answers verified against OEM shop manuals.
What is the rated operating capacity (ROC) of the Bobcat 863?
Under SAE J818 standards (50% of tipping load for wheeled loaders or 35% for tracked loaders), the Bobcat 863 has a Rated Operating Capacity of 1,900 lbs (862 kg). The static tipping load is 3,800 lbs (1,724 kg). Always operate within rated parameters to prevent rollover hazards.
What hydraulic fluid and reservoir capacity does the Bobcat 863 use?
The Bobcat 863 hydraulic reservoir requires 12.0 US gallons (45.4 Liters) of Bobcat All-Season / ISO VG 46 Anti-Wear. The complete system capacity with cylinders and coolers holds 15.5 US gallons.
What engine powers the Bobcat 863 and what are the service intervals?
The Bobcat 863 is powered by a Deutz BF4M1011F Oil-Cooled Turbo diesel producing 73 gross horsepower. The crankcase requires 11.0 quarts (10.4 Liters) of 15W-40 Heavy Duty Diesel. Oil changes are recommended every 100 to 250 operating hours based on duty cycle.
Where is the serial number located on the Bobcat 863?
Upper rear upright post behind right cabin door frame.
What Wix filters fit the Bobcat 863?
Primary cross-references for the Bobcat 863 are: Engine Oil: Wix 51333 / Donaldson P550117; Hydraulic: Wix 51567 / Donaldson P550388; Fuel: Wix 33358 / Donaldson P550057; Outer Air: Wix 46449 / Donaldson P822768. Always verify thread pitch and seal diameter prior to spin-on installation.