Part of the Case Operator Manuals.
Setting up a tractor properly for every season comes down to 136 pages of Case factory guidance, and this Case 6388, 6588, 6788 operator manual PDF (OEM part 1258501C4) holds all of it. Draft control, position control and raise rate settings for the three-point hitch get their own chapter, followed by hitch category charts, coupling steps, swinging drawbar setup and the color code for your remote hydraulic outlets. A long stretch of the book goes to wheel tread tables for single, dual and wedge wheels, then lubrication guides, a preventive maintenance schedule and the Data Center's function pads and warning tellites. Before filling tanks or airing up tires, check the specifications chapter for capacities, PTO shaft speeds and front and rear inflation pressures, plus liquid ballast weights. Resetting dual treads by trial and error eats mornings. Bookmarks drop you straight into the wheels or PTO section, so you're back in the field before the weather turns.
What's Inside This Case 6388, 6588, 6788 Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| To the Owner | 3-7 | Tractor Model, Serial Numbers, Universal Symbols, Metric Measurements, Optional Equipment, Engine, Chassis, Control Center, Front Axle, Data Center |
| Work Safely, Follow These Rules | 8-12 | Servicing and Before Starting, Starting, During Operation, Transporting, Control Center, Before Dismounting, Dismounting, After an Upset |
| Inch-Metric Hardware | 13-18 | Bolt Classification, Identification Chart, Metric Series, Inch Series, Hardware Torque Data, Standard Torque, Foot Pounds, Newton Meters, Bolt Type Identification |
| Energy Conservation Follow These Recommendations | 19-20 | Engine Adjustment, Fuel Injection Pump, Air Induction System, Fuel Tank, Radial Tires, Ballast |
| Instruments and Controls | 21-33 | Instrument Panel and Controls, Right Console Controls, Park Lever, Hydraulic Seat |
| Before Operating Your Tractor | 34-42 | Starting the Engine, Driving the Tractor |
| Engine and Fuel System | 43-52 | Warranty Notice, Fuel System, Fuel Injection Pump and Nozzles, Priming the Turbocharger, Cooling System, Draining and Filling the Cooling System, Air Cleaning System, Removing and Cleaning the Primary Filter Element, Inspection, Secondary Filter Element |
| Electrical System | 53-59 | Instrument Light Dimmer Switch, Rocker Switches, Turn Signal Indicators, Charging System for Alternator-Generator, Cranking System, Lighting System, Lights |
| Hydraulic Controls for Three Point Hitch | 60-63 | Position Control, Position Control Lock Lever, Adjustable Stop, Draft Control, Run Range, Raise Rate Control, Hitch Drop Rate Adjustment Attachment |
| Three-Point Hitch | 64-69 | Lift Links and Turnbuckles, Hitch Upper Link, Telescoping Lower Links, Lateral Limiter, Coupling the Equipment, Hitch Category Chart, Uncoupling the Equipment, Operating the Three-Point Hitch with Draft Control, Float Lockout Pins, Draft Control Lever, Position Control Lever, Lift Link Turn Buckles, Drop Rate Adjustment |
| Hitching Trailing Equipment to the Tractor | 70-73 | Safety Chain, Swinging Drawbar for Tractors Without Three-Point Hitch, Swinging Drawbar for Tractors with Three-Point Hitch |
| Auxiliary Valves, Remote Cylinders and Hydraulic Outlets | 74-78 | Flow Control Lever, Color Code, Motor Valve, Hydraulic Motor Operation, Using the Motor Valve, Connecting Hoses to the Rear Hydraulic Outlets, Check Valves |
| Power Take-Off | 79-83 | Operating the Independent Power Take-Off |
| Differential Lock | 84 | Hydraulically Operated Differential Lock, Steering Control, Front Wheel Position |
| Wheels | 85-103 | Tread Widths, Assembling the Double-Beaded Rims Onto the Wheels, Reversing the Wheels, Wheels with Double-Beaded Rims, Oscillation Stop Mounting, Mean Tread Limits, Tires, Inflation, Front and Rear Tire Inflation Pressure, Ballasting the Tractor, Liquid Weight of Tractor Tires |
| Storing the Tractor | 105-106 | Storage, Removing From Storage |
| Lubrication | 107-115 | Engine Oil, Gear Lubricant, Hydraulic Fluid Filters, Lubrication Fitting Grease, Engine Oil Filter, Miscellaneous Lubrication, Lubrication Table, Diesel Engine Crankcase, Front Axle Differential, Rear Frame, Transfer Case, Lubrication Fittings, Lubrication Guide, Crankcase Oil, Pivot Bearings, Three-Point Hitch, Drawbar Roller, Transmission Oil Level |
| Preventive Maintenance Guide | 116-122 | Hydraulic Fluid Filters, Water Pump, Wheel Retaining Hardware, Cooling System, Fuel Tank Water Drain Cock, Air Cleaner, Control Center Equipment Preventive Maintenance, Outside Air Filter, Recirculation Air Filter, Air Conditioner Condenser, Air Conditioner System Pressures, Evaporator Drain Valves, Compressor Belt Tension |
| Specifications | 123-130 | Ground Speeds, Capacities, Engine Specifications, Engine Speeds, Power Take-Off Shaft Speeds, Bulb Numbers |
| Front Chemical Tanks | 131-132 | Mounting Holes, Tank Size, Ballast Recommendations, Transport Speed, Front Tread, Optional Equipment, Quick Couplers, Alternate Tires, Auxiliary Fuel Tank, Auxiliary Lighting, Remote Control Valves, Rear Window Wiper |
| Metric (SI) Measurements | 133-136 | Area, Force, Length, Mass, Power, Pressure |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Fuel Tank Capacity | 89 gal. | p. 126 |
| Rear Frame (Transmission and Hydraulic System) Capacity | 23.5 gal. | p. 126 |
| Engine Speed at Standard PTO | 2100 RPM | p. 126 |
| Wheel Wedge Tightening Torque | 400-500 foot-pounds | p. 95 |
| Rim Clamp Bolt Torque | 255 foot-pounds (346 N-m) | p. 85 |
| Hydraulic Filter Cover Nut Torque | 19-21 foot-pounds (26-28 N-m) | p. 108 |
| Cooling System Capacity | 34 qts. | p. 126 |
| Engine Crankcase Oil Capacity (With Filter) | 20 qts. | p. 126 |
| Transfer Case Capacity | 4.5 qts. | p. 126 |
| Maximum Static Drawbar Vertical Load | 3200 lbs. | p. 72 |
| Engine Oil Capacity (Without Filter Change) | 17 qts. | p. 110 |
| 6388 | ||
| Shipping Weight (6388) | 16950 lbs. | p. 128 |
| 6588, 6788 | ||
| Shipping Weight (6588, 6788) | 17160 lbs. | p. 128 |
Case 6388, 6588, 6788 Common Problems This Manual Covers
Case 6388, 6588, 6788 engine oil pressure gauge reading drops into the red band while running
Check the crankcase oil level right after you shut off the engine; page 24 says to shut it down immediately when the needle hits the red band. Add oil if necessary and restart. If the gauge still shows the same low reading, do not operate the engine; running without oil pressure destroys engine bearings. Call your dealer rather than risk the season.
Manual Section: Engine Oil Pressure Gauge p. 24Red transmission oil pressure tellite stays lit after the engine has run a few seconds
Check the transmission oil level with the engine stopped as soon as the tellite stays on, and add oil to the proper level using the Lubrication section on page 107. Restart. If the tellite still comes on, page 25 says see your dealer. A flicker at low idle with the brakes lightly applied is normal, so don't chase that.
Manual Section: Transmission Oil Pressure Tellite p. 25Data center coolant level warning light flashing red with the engine running
Check the cooling system only after the engine cools; page 31 says do not remove the radiator cap while the coolant level light is flashing. Once cool, check the coolant level and fill per the Cooling System section on page 48, but never pour coolant into the radiator if the engine is very hot. Clean the radiator and cooler fins while you're there.
Manual Section: Data Center Problems and Reaction p. 31Red EGT warning light flashing with exhaust gas temperature above the preset value
Check the EGT reading by pressing the EGT function pad once, then again for the preset value. Inspect for a clogged air cleaner, restricted air pipes, a collapsed air hose and high coolant temperature, the causes listed on page 32. Never run above 1420 degrees F (770 deg. C), and idle below 550 degrees F (290 deg. C) before shutdown. If the cause stays hidden, see your dealer.
Manual Section: Data Center Problems and Reaction p. 32Engine will not start after running out of fuel or replacing the fuel filters
Check that all plugs and fuel line connections are tight, because trapped air in the lines keeps the engine from starting. Open the fuel tank shut-off valve, loosen the wing nut on the hand priming pump behind the injection pump, rotate the locking strap away from the handle, then bleed the air using one of the two methods on page 45. Then get back in the field.
Manual Section: Fuel System p. 45Data center function light flashing with an E shown at the right side of the display
Check which function light is flashing and press its function pad; an E on the right side of the display flags an electrical problem in that monitored system (page 30). Inspect that system for the cause. Before working on any part of the electrical system, disconnect the battery ground cables at each battery (page 53). Do not open or service the data center itself; if you can't find the cause, see your dealer.
Manual Section: Data Center Problems and Reaction p. 30Frequently Asked Questions
Where is the transmission serial number located on a Case IH 6388, 6588, or 6788?
The serial number for the chassis, which includes the transmission and frame, is located on the right side of the rear frame. p. 7
What is the recommended torque for tightening the wedge wheel bolts on a Case IH 6388, 6588, or 6788?
The wedge bolts should be tightened to 400-500 foot-pounds (542-678 N-m) of torque. They must be tightened alternately in steps of increasing torque, and not all at once. p. 95
What is the required belt tension for the water pump, alternator-generator, and fan belt?
When using a belt tension gauge, the recommended range is 60-85 pounds (267-378 N) of strand tension. p. 50
What is the procedure for checking the hydraulic fluid level in the rear frame?
Check the oil level before operating the tractor. Ensure the oil level is up to the 'FULL' mark on the oil level gauge. Refer to the 'Lubrication Table' for the correct capacity and lubricant type. p. 108
How often should the hydraulic fluid filters be changed?
The hydraulic fluid filters should be changed after the first 10, 100, and 200 tachometer hours of operation, and then every 200 hours of operation thereafter. p. 108
What exactly do I receive with this Case 6388 Operator Manual?
All 136 pages arrive as one searchable PDF at checkout. Read it at the desk, then take the phone out to the machine.
Can I print just the pages I need from this Case 6388 manual?
Yes. It prints from any PDF reader, so run off the pages you need for your own repair work.
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