Part of the Case Repair Manuals.
This 829-page Service Manual breaks down every system on both tractors, from the 451BD/451BDT and 504BD/504BDT engines through fuel injection, hydraulics, steering, power train, brakes, and electrical. You get full wiring diagrams for chasing electrical gremlins, a dedicated troubleshooting section covering the Draft-O-Matic hydraulic system, differential lock, and dual/single pump setups, plus a complete "How It Works" breakdown of the flow divider and remote valves.
What's Inside This Case 1270, 1370 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 3-38 | General Specifications, Detailed Specifications, Lubrication |
| Engines | 39-210 | Cylinder Head and Valves, 451BD & 451BDT, 1270 Tractors |
| Fuel System | 211-262 | Robert Bosch Fuel Injection Pumps, Roosa Master Fuel Injectors, Repairing Polyethylene Fuel Tank, Repairing Nylon Fuel Tank |
| Hydraulics | 263-364 | Testing Tractor Hydraulic System, Hydraulic Oil Filters, Hydraulic Charging Pump, Hydraulic 4 Gear Dual Pump, Hydraulic 2 Gear Single Pump, Remote Hydraulic Valves |
| Steering | 365-406 | Testing Tractor Steering and Power Break System, Steering Column and Steering Pump, Steering Axle and |
| Power Train | 407-497 | Rps-34 Power Shift Transmission, C-2 Clutch, C-1 Clutch, C-4 Clutch, C-3 Clutch, Planetary, Mainshaft, Countershaft |
| Brakes | 498-523 | Brake Pedals, Power Assist Brake Unit, Power Assist Cover Assembly, Power Assist Valve and Cylinder Assembly, Parking Brake |
| Electrical | 524-571 | Wiring Diagram, Electrical Wiring and Code, Tractor Cab Wiring Diagram, Starting or Cranking Motors, Solenoid Switch Tests, Starter or Cranking Motor Specifications, Solenoid Specifications |
| Accessories and Misc. | 572-713 | Cab Sealing and Recirculation, Air Conditioning Temperature Control, Cab Air Recirculation Modification, Compressor Belt, Mounting Brackets, Pulley and Belt Alignment, Compressor Clutch, Blower Switch |
| How It Works - Trouble Shooting | 714-829 | Flow Divider PTO Control Valve, RH Dual Pump, LH Single Pump, Remote Hydraulic Valve, Draft-O-Matic Hydraulic System, Differential Lock, Steering Hand Pump and Valve |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 504BD and 504BDT Diesel Engines | ||
| Cylinder head bolts torque | 200 to 210 ft. lbs. | p. 62 |
| All Models | ||
| Pressure relief valve free length | 1.930" | p. 517 |
| Oil pan drain plug torque | 18 to 20 ft. lbs. | p. 85 |
| Alternator pulley nut torque | 40 to 60 ft. lbs. | p. 563 |
| Alternator housing thru bolts torque | 35 to 40 in. lbs. | p. 563 |
| Steering relief valve pressure | 2200 to 2400 PSI | p. 369 |
| PTO Hand Lever Adjustment | 5 lbs. pull at lever | p. 31 |
| General Torque (1/4" bolt) | 9 ft. lbs. | p. 32 |
| 504BDT | ||
| Oil pan cap screws torque | 13 to 17 ft. lbs. | p. 121 |
Case 1270, 1370 Common Problems This Manual Covers
Case 1370 504 diesel head gasket leaking oil between cylinders, engine temperature climbing
Remove the cylinder head and inspect the gasket surface for warping or pitting around cylinders 1 and 2. Resurface if needed, then torque the head bolts to 200 to 210 ft. lbs. in the sequence shown on page 62 for 504BD and 504BDT engines. Check coolant level and pressure-test the cooling system before restarting.
Manual Section: Engines p. 62Power steering loses assist or jerks unpredictably, relief pressure won't hold steady
Run the steering pump circuit test on page 365. With the engine at 2000 RPM, steer against the right stop and close the flow meter load valve; relief valve pressure should read 2200 to 2400 PSI. If it reads low, pull the brake valve housing and check the pressure relief inner spring; replace if free length is under 1.930 inches.
Manual Section: Steering p. 369Valve tappet clearance reads wrong on the dial indicator after adjustment, rough idle
Pull the valve cover and check tappet clearance with a dial indicator; intake should read 0.015 inch, confirmed at 0.053 inch on the dial after one full crank revolution plus 70 degrees past TDC. Verify the cam-to-crankshaft gear timing marks line up before reassembling, since one tooth off throws every clearance reading on that bank.
Manual Section: EnginesOil seeping from the front timing gear cover or pan gasket, visible after warm-up
Clean the mating surfaces on the front timing gear cover and oil pan, then check for a crushed or torn gasket as the leak source. Reseal with a new gasket and torque the oil pan drain plug to 18 to 20 ft. lbs. per page 85. Run the engine and recheck after it reaches operating temperature for any seepage.
Manual Section: Engines p. 85Alternator won't charge or charging indicator light flickers on and off while driving
Check the alternator brush spring tension first; it should hold 10 to 12 oz. with the spring compressed to 1/4 inch, per page 560. If brushes look fine, inspect the wiring harness connectors for corrosion and verify the pulley nut is torqued to 40 to 60 ft. lbs. on page 563 so the belt isn't slipping under load.
Manual Section: Electrical p. 560Frequently Asked Questions
What are the recommended service intervals?
The manual provides a table of service intervals for various components. For example, the Front Axle Pivot, King Pins, and Drawbar Roller require service every 10 hours. Engine Crankcase Oil Level, Transmission Oil Level, and Fuel Tank Level should be checked every 50 hours. The Engine Oil Filter, Air Cleaner, and Cooling System require service every 200 hours. p. 37
What fluids and capacities does this machine require?
The machine requires various fluids with specific capacities. For the 1270 tractor, the engine crankcase with filters holds 17 U.S. Quarts (16.1 Liters), the transmission hydraulic system holds 120 U.S. Quarts (113.6 Liters), the fuel tank holds 80 U.S. Gallons (302.9 Liters), and the cooling system holds 41 U.S. Quarts (38.8 Liters). For the 1370 tractor, the cooling system holds 42 U.S. Quarts (39.7 Liters). p. 35
How to troubleshoot engine won't start?
If the engine won't start, check the starter drive for grinding or rattling noises, which indicate a faulty mechanism. Perform a no-load test on the starter to check for issues like a low free speed or high cranking current. Also, ensure the battery is at least 75% full charge and all connections are tight and free of corrosion. p. 539
What are the hydraulic system specifications?
The hydraulic system specifications include a Hydrostatic Power Steering pump capacity of 8 GPM (30.3 l/min) at 2000 engine RPM. The Remote Hydraulic System has a pump capacity of 20 GPM (75.7 l/min) at 2000 engine RPM, with a relief valve pressure of 1900 to 2050 PSI (133.6 to 144.1 kg/cm²). The Single Variable Flow Hydraulic System also has a pump capacity of 20 GPM (75.7 l/min) at 2000 engine RPM. p. 6
What do I get after purchasing this manual?
You get a 829-page searchable PDF 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 Service Manual?
The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Are there wiring harness diagrams in this manual?
Included. The Service Manual covers complete wiring harness diagrams, electrical circuits, and connector pinouts.
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