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Part of the Case Repair Manuals.
This 64-page Case 500-600-900B Shop Manual covers your Diesel, LP-Gas, and 900B tractors with one factory source, whether you're running the 500 Diesel, 600 Diesel, 600 LP-Gas, or 900B lineup. Open it up and you get hydraulic lift system diagrams, a full troubleshooting section for the lift circuit, and step-by-step procedures on everything from PSB, PES, and APE injection pump timing to traction clutch and PTO overhaul. You also get tightening torques, clearances, and tune-up data pulled straight from the engineering department, not a forum thread. Set the relief valve unloading pressure between 980 and 1030 psi, and torque the nozzle cap nut to 50-55 foot pounds before you button up the injectors. No more flipping through three different parts books trying to match a system to your serial number. Bookmarked by section, this PDF opens on your phone or tablet so you can carry the exact spec straight to the tractor.
What's Inside This Case 500, 600, 900B Manual
| System | Pages | Key Topics |
|---|---|---|
| General | Tractor Identification, Condensed Service Data, Standard Torques, And Maintenance for the Series 500, 600 and 900B | |
| Engine | Engine and Internal Components, Cylinder Head, Pistons and Crankshaft, And Engine Specifications for the Diesel and LP-gas Versions | |
| Fuel System (LP-Gas & Diesel) | LP-gas Fuel System and Carburetion, Diesel Injection Pump and Injectors, Fuel Filters, And Governor | |
| Cooling System | Radiator, Water Pump, Thermostat, And Cooling System Service | |
| Electrical & Ignition | Electrical System, Ignition, Generator and Regulator, Starting Motor, And Wiring | |
| Clutch & Transmission | Traction Clutch, The Series 500 and Series 600/900B Transmissions, And Belt Pulley | |
| Differential & Final Drive | Differential, Bevel Gears, Rear Axle, And Final Drives | |
| Brakes | Service Brakes, Adjustment, And Brake Troubleshooting | |
| Steering & Front Axle | Front Axle and Steering System, Steering Gear, And Adjustment | |
| Hydraulic Lift & PTO | Hydraulic Lift System, Three-Point Functions, And Power Take-Off |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Series 500-600-900B | ||
| Relief valve unloading pressure range | 980-1030 psi | p. 59 |
| All Models | ||
| Nozzle cap nut torque | 50-55 foot pounds | p. 5 |
| Thermostat start to open temperature | 175-180 degrees F. | p. 36 |
| Thermostat fully open temperature | 195 degrees F. | p. 36 |
| 900B series tractors | ||
| Auto-Lite GHH-6001J Brush spring tension | 26-46 oz. | p. 37 |
| Auto-Lite GHH-6001J Field draw (10.0 volts) | 1.6-1.7 amps | p. 37 |
| Series 500 | ||
| First stage filter cleaning pressure threshold | less than 10 pounds pressure | p. 10 |
Case 500, 600, 900B Common Problems This Manual Covers
Case 900B diesel won't start when hot, cranks fine but fuel pump seems bound up
Check the rotary Bosch pump for varnish or ULSD-related plastic buildup fouling the internal shaft. Bleed the fuel system per the diesel fuel bleeding procedure and inspect the first stage filter, cleaning it if pressure exceeds the 10 pound threshold specified for Series 500. Replace the filter element if debris is present.
Manual Section: Fuel Systems (LP-Gas & Diesel) p. 10Sudden power loss or shutdown under load with no warning lights
Inspect fuel screens and lines for restriction, since plugged screens starve the injection pump under demand. Remove and clean the Pes or Psb pump inlet screen, then check injector nozzle cap nuts and torque them to 50 to 55 foot pounds. Test injector spray pattern on a bench tester before reinstalling; a weak or dribbling pattern points to a failing injector, not a wiring fault.
Manual Section: Fuel Systems (LP-Gas & Diesel) p. 5Throttle shaft sticks and engine surges or hangs at high RPM after sitting all winter
Remove the governor linkage cover and work the throttle shaft by hand to check for binding from dried grease or corrosion. Free the shaft, clean it with solvent, and lubricate before adjusting the diesel governor speed setting. If the shaft still binds under spring pressure, pull it for bushing wear and replace rather than forcing adjustment.
Manual Section: Governor & Cooling SystemTakes several minutes to run smooth on all cylinders and smokes heavily until warm
Check injector timing on the Ape or Pes pump against the governor linkage marks before assuming a ring or valve problem. Verify each injector fires evenly by cracking lines one at a time with the engine idling. Torque nozzle cap nuts to 50 to 55 foot pounds on reassembly and recheck for even firing once warm.
Manual Section: Fuel Systems (LP-Gas & Diesel) p. 5Engine overheats under heavy load even with adequate coolant level
Pull the radiator brush kit and clean packed debris from between the fins, since restricted airflow is the most common cause on these tractors. Pull the thermostat and test it in hot water, confirming it starts to open between 175 and 180 degrees F. and reaches full open by 195 degrees F. Replace it if it sticks shut or opens late, and check the fan belt tension while it's out.
Manual Section: Cooling System p. 36Three point hitch fails to lift or loader response is slow and weak
Check the lift pump drive chain for slack and inspect the oil filter for clogging before adjusting the relief valve. Test unloading pressure at the relief valve, which should fall between 980 and 1030 psi on Series 500-600-900B; a reading below that range points to a worn pump or a relief valve stuck open. Adjust or replace the valve and refill with the specified hydraulic fluid.
Manual Section: Lift System p. 59Frequently Asked Questions
How do I adjust the governor on the Case 500, 600 or 900B?
Go to the Fuel System and governor coverage. Bring the engine to operating temperature first, then set the high-idle and low-idle speeds per the governor adjustment procedure and the Service Data specifications. A surging or hunting engine is usually a governor linkage or spring adjustment, set against spec before deeper carburetor or injection work.
The engine is hard to start or runs poorly on my LP-gas or diesel Case tractor. Where do I look?
Use the Fuel System (LP-Gas & Diesel) and Electrical & Ignition groups. On LP-gas check the converter, carburetion, and ignition; on diesel check the injection pump, injectors, and fuel filters. Then verify the ignition or starting circuit and the cooling system. The manual separates the LP-gas and diesel procedures so you follow the right fuel path for your machine.
The clutch slips or the transmission will not shift. What should I check?
Work the Clutch & Transmission group, which covers the traction clutch and both the Series 500 and Series 600/900B transmissions. Check the clutch adjustment and linkage first, then the transmission per its section. A slipping clutch or hard shift usually traces to adjustment or linkage before internal wear, so verify the setup before teardown.
Which Case models and fuel types does this manual cover?
It is the combined I&T-style shop manual for the Case 500, 600 and 900B tractors in both diesel and LP-gas versions, with the engine, fuel, cooling, electrical, clutch and transmission, differential and final drive, brakes, steering, and hydraulic lift and PTO systems documented for each series.
What do I get after purchasing this Case 500, 600, 900B manual?
You get a 64-page searchable PDF (105 MB) that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Can I print specific sections of this Case 500, 600, 900B Shop Manual?
Zero restrictions. The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Can I find hydraulic circuit diagrams in this Case 500, 600, 900B manual?
Full hydraulic system diagrams are included, covering circuits, valve locations, and hydraulic component specs for the Case 500, 600, 900B.
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