Part of the Case Schematics.
Looking for a Case 588 service manual PDF that actually matches your machine? This 762-page factory manual (OEM Cre 7-80963GB) covers both crawler and wheeled versions of the 588 hydraulic excavator, from the engine to the turntable bearing. Inside: electrical schematics for both variants, including pre-November 1999 machines, plus hydraulic schematics with full pressure checks and adjustments. Rebuild procedures walk you through the travel motors, swing reduction gear, axles and brakes, and the complete attachment control valve. Set the P35 pressure limiter to 35 bar, and pull the wheel nuts on the wheeled version down to 540 Nm. A dead excavator earns nothing; forum guesses fix nothing. This bookmarked PDF opens on your laptop, tablet, or phone, and you can search any spec by keyword.
What's Inside This Case 588 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 3-46 | Safety, Standard Torque Settings, Specifications |
| Engine | 47-66 | Engine Removal and Installation, Radiator and Oil Cooler, Cooling System Filling |
| Electrical System | 67-244 | Electrical Schematics - Before November 99, Electrical Schematics, Starter Motor, Alternator, Anti-Start Device |
| Undercarriage | 245-266 | Set of Tracks |
| Drive Train | 267-404 | Travel Reduction Gear and Brake, Swing Reduction Gear and Brake, Front Axle and Service Brake, Rear Axle and Service Brake, Gearbox and Parking Brake |
| Undercarriage Hydraulics | 405-504 | Hydraulic Travel Motor, Travel Control Valve, Stabilizer and Dozer Blade Control Valve, Steering |
| Upperstructure Hydraulics | 505-715 | Checks, Adjustments and Hydraulic Schematics, Hydraulic Swivel, Hydraulic Pumps, Attachment Control Valve, Swing Control Valve |
| Upperstructure | 716-762 | Upperstructure and Turntable Bearing, Cab, Bonded Window Replacement |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Front wheel nuts | 540 Nm | p. 319 |
| Breather | 5 Nm | p. 311 |
| Breather support | 15 Nm | p. 311 |
| wheel nuts | 540 Nm | p. 353 |
| 35 bar pressure limiter (P35) | 35 bar | p. 511 |
| Pressure difference (ΔP) for boom raising control | 21 to 23 bar | p. 517 |
| Flow for boom cylinder | 140 to 160 l/min | p. 517 |
| Nylon ring (1) oven temperature | 80°C | p. 538 |
| Nylon ring (1) oven time | 8 hours | p. 538 |
| Engine Oil Sump Capacity | 10 L | p. 20 |
| Fuel Tank Capacity | 150 L | p. 20 |
| Hydraulic Reservoir Capacity | 115 L | p. 20 |
Case 588 Common Problems This Manual Covers
Case 588 excavator slow cycle times, weak digging force, boom and bucket feel sluggish
Check attachment control valve safety valve pressure; it should hold 380 to 410 bar per the settings on page 538. Verify boom cylinder flow reaches 140 to 160 l/min during the checks on page 537. If both fall short, drain the contaminated oil, replace the filters and suction strainer, and refill the 115 L reservoir with clean fluid.
Manual Section: Upperstructure Hydraulics p. 538Hydraulic functions erratic or weak after pump replacement, controls slow to respond
Drain and flush the complete circuit after any pump or valve work; air and sludge left behind wreck performance fast. Torque the engine to pump retaining screws to 44 Nm as listed on page 48, then confirm the boom raising pressure difference holds 21 to 23 bar using the check procedure on page 517.
Manual Section: Upperstructure Hydraulics p. 517Hydraulic hoses leaking, cracking, or bulging at the fittings and cylinder circuit connections
Inspect every hose daily for abrasion, bulging, and corrosion at the connector bodies; replace suspect hoses and O-rings, never reuse old seals. If the leak traces back to the hydraulic swivel, follow the seal replacement on page 538: warm the new nylon rings at 80°C for 8 hours and fit them within 48 hours.
Manual Section: Upperstructure Hydraulics p. 538Hydraulic oil running hot during normal digging, temperature climbs steadily within the first hour
Check the hydraulic oil level first; the reservoir holds 115 L and the full system takes 184 L, per the specifications on page 20. Drain and replace degraded or contaminated oil, change the filter and suction strainer elements, then clean the oil cooler fins with compressed air. Verify the tank breather is clean and passing air freely.
Manual Section: Upperstructure Hydraulics p. 20Swing motion sluggish or brake dragging, upperstructure slow to rotate under load
Test swing circuit pressure without load; you want 15 to 17 bar, with the relief valve set between 370 and 400 bar per page 526. Verify swing brake release pressure reaches 35 bar so the brake fully clears. Measure rotation against the 7.6 rpm spec on page 21; if it falls short, adjust the relief valves.
Manual Section: Upperstructure Hydraulics p. 526Frequently Asked Questions
What are the torque specifications for the wheel nuts on a 588 wheeled excavator?
The wheel nut torque for the 588 wheeled excavator is 460 to 620 Nm. p. 389
What is the correct oil type for the transmission components?
Extreme Pressure oil is used for all cased transmission components, specifically TYPE API GL5 GRADE 80W90 and ISO VG 150. p. 17
What is the torque specification for the swing motor retaining screws on the reduction gear?
The swing motor retaining screws on the reduction gear must be tightened to 200 Nm. p. 295
What is the procedure for checking the turntable bearing wear?
Place weight in the bucket, lift the machine, and use a dial gauge on the teeth of the turntable bearing. If the result obtained is greater than 7 mm, the turntable bearing must be replaced. p. 719
What is the torque specification for the drive sprocket retaining screws?
The drive sprocket retaining screws must be tightened to 280 Nm. p. 269
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