Case 588G Forklift – Parts, Specs & Serial Numbers

Description:

The Case 588G is a rugged, mid-to-high capacity rough terrain forklift built to handle the heaviest loads in construction, forestry, and industrial sites. With a massive 8,000 lb lift capacity, this model provides a blend of strength, stability, and off-road performance that outpaces lighter units like the 586G.

As part of the Case “G Series,” the 588G features a turbocharged diesel engine, advanced hydraulic control, and optional 4WD for difficult jobsite conditions. Whether you’re moving concrete forms, lumber, or machinery, the 588G is built to endure daily high-demand use with minimal downtime.

Specifications:

Engine:

• Model: Case Family III 445T/M2 Turbocharged Diesel

• Displacement: 274 cu in (4.5L)

• Horsepower: 80 HP @ 2200 RPM

• Fuel Capacity: 30 gallons

• Cooling System: Liquid-cooled

• Emission Tier: Tier 3 (no DEF)

Transmission:

• Type: Synchromesh power shuttle

• Speeds: 4 forward / 4 reverse

• Drive Options: 2WD standard, 4WD optional

• Clutch: Torque converter

Hydraulic System:

• Pump Flow Rate: ~25 GPM

• System Pressure: ~2,500 psi

• Hydraulic Controls: Mechanical or pilot-operated levers

• Functions: Lift, tilt, side-shift (optional)

Performance:

• Lift Capacity: 8,000 lbs @ 24" load center

• Max Lift Height: Up to 22 feet (depending on mast)

• Mast Tilt: 15° forward / 10° back

• Drawbar Pull: Up to 12,000 lbs

Dimensions:

• Operating Weight: ~15,000 lbs

• Wheelbase: 96 inches

• Overall Width: 85 inches

• Ground Clearance: ~14 inches

• Turning Radius: ~15 feet

Maintenance Essentials:

• Filter Kits: Regular oil, air, fuel, and hydraulic filter changes are critical. Shop Case 588G Filter Kits

• Hydraulic Cylinder Kits: High-load use causes frequent seal wear. Browse 588G hydraulic seal kits

• Brake Systems: Wet disc brakes require periodic service. Get brake kits for Case 588G

• Transmission Leaks: A known issue on high-hour models; find power shuttle seal kits

Common Issues & Quick Fixes:

• Transmission Slipping: Usually caused by worn torque converter seals or low fluid. Rebuild or reseal power shuttle.

• Weak Lift or Tilt Functions: Clogged hydraulic return filter or pump wear; replace as needed.

• Brake Failure: Check for worn internal discs or hydraulic contamination; install new wet brake kits.

• Hard Steering on 4WD Models: Could be a failing orbitrol or steering priority valve.

Serial Number Location:

• Tag Location: Left frame rail behind front tire or near operator platform

• Format: Typically starts with “JJG” or “NFG” followed by digits

Pro Tip:

The 588G handles heavier loads than the 586G but uses the same core powertrain. Upgrading to heavy-duty cylinder seal kits and performing monthly hydraulic inspections will dramatically improve long-term uptime.