Part of the John Deere Repair Manuals.
Chasing low oil pressure on a PowerTech? This 450-page John Deere PowerTech 10.5 L and 12.5 L Technical Manual PDF (OEM CTM100) walks you through the 6105HF, 6125HF, 6105HRW, 6125HRW, 6105ADW, and 6125 Tier II diesel engines that power the 9200, 9220, 9300, 9320, and 9400 tractors. Inside: a complete engine rebuild guide covering cylinder head and valves, liners, pistons, rods, and crankshaft, plus break-in and tune-up procedures. You also get a full diagnostics section for excessive oil consumption, high or low oil pressure, and coolant temperature problems, backed by unified inch and metric torque tables. Torque the injector adjusting screw lock nuts to 65 N-m (48 lb-ft) and check intake valve stem-to-bridge clearance at 0.58 mm on a cold engine. Your tractor is down; get factory numbers, not forum guesses. Bookmarked sections and keyword search take you straight to the spec.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 15-46 | Safety, Engine Identification and Applications, Fuels, Lubricants and Coolant, Engine Serial Number and Option Codes, General Repair Precautions |
| Repair - Engine Rebuild Guide, Break-In and Tune-Up | 47-74 | Engine Rebuild Guide, Break-In Procedure, Engine Tune-Up, Valve Clearance Check, Compression Test |
| Repair - Cylinder Head and Valves | 75-142 | Cylinder Head Removal and Installation, Valve and Valve Seat Service, Valve Guides and Springs, Rocker Arms and Push Rods, Head Gasket and Torque Sequence |
| Repair - Cylinder Block, Liners, Pistons and Rods | 143-198 | Cylinder Block Inspection, Liner Removal, Installation and Protrusion, Piston and Ring Service, Connecting Rods and Bearings |
| Repair - Crankshaft, Main Bearings and Flywheel | 199-242 | Crankshaft Inspection and Measurement, Main Bearings and Thrust Washers, Front and Rear Crankshaft Seals, Vibration Damper, Flywheel and Ring Gear |
| Repair - Camshaft and Timing Gear Train | 243-270 | Camshaft Removal, Inspection and Installation, Timing Gear Train and Backlash, Camshaft Followers and Bushings, Gear Timing Marks |
| Repair - Lubrication System | 271-286 | Oil Pump, Oil Cooler and Filter, Pressure Regulating Valve, Oil Pan and Pickup, Oil Pressure Specifications |
| Repair - Cooling System | 287-302 | Water Pump, Thermostats, Radiator and Coolant Passages, Fan Drive, Coolant Recovery |
| Repair - Air Intake and Exhaust System | 303-328 | Turbocharger Removal, Inspection and Installation, Aftercooler, Air Intake Manifold, Exhaust Manifold, Air Cleaner |
| Repair - Fuel System | 329-330 | Fuel Injection Pump and Nozzles, Fuel Filters, Fuel Transfer Pump, Bleeding the Fuel System |
| Repair - Starting and Charging Systems | 331-332 | Starter Motor, Alternator, Battery Connections, Charging Circuit Checks |
| Theory of Operation | 333-348 | General Engine Operation, Lubrication System Operation, Cooling System Operation, Air Intake and Exhaust Operation, Fuel System Operation |
| Diagnostics | 349-374 | Excessive Oil Consumption, High and Low Engine Oil Pressure, Engine Overheating, Hard Starting, Low Power, Excessive Smoke, Coolant in Oil |
| Tools and Other Materials | 375-410 | Repair Tools and Materials, Diagnostic Service Tools, Dealer-Fabricated Tools, Sealants and Adhesives |
| Specifications | 411-450 | General OEM Engine Specifications, Repair and Wear Limit Specifications, Diagnostic Specifications, Unified Inch and Metric Torque Values |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Electronic Unit Injector—Preload | 0.00 mm (in.) clearance plus 1/2 turn in (180°) | p. 417 |
| Electronic Unit Injector Adjusting Screw Lock Nuts—Torque | 65 N•m (48 lb-ft) | p. 417 |
| Thermostat Test—Rating | 82°C (180°F) | p. 434 |
| Thermostat Test—Initial Opening (Range) Temperature | 80—84°C (175—182°F) | p. 434 |
| Valve Stem-to-Bridge Clearance (Engine Cold)—Intake Valve—Clearance | 0.58 ± 0.05 mm (0.023 ± 0.002 in.) | p. 417 |
| Valve Stem-to-Bridge Clearance (Engine Cold)—Exhaust Valve—Clearance | 1.08 ± 0.05 mm (0.043 ± 0.002 in.) | p. 417 |
| Cylinder Head Cap Screw Torque—Step 1 (No. 17 Cap Screw Initial Torque) | 100 N•m (74 lb-ft) | p. 134 |
| Cylinder Head Cap Screw Torque—Step 2 (All Cap Screws Initial Torque) | 163 N•m (120 lb-ft) | p. 134 |
| Garrett Turbocharger Shaft—Radial Bearing Clearance (Allowable Movement) | 0.076—0.165 mm (0.003—0.0065 in.) (measured on center of shaft) | p. 435 |
| Borg Warner Turbocharger Shaft—Radial Bearing Clearance (Allowable Movement) | 0.56—0.81 mm (0.022—0.032 in.) (measured on end of shaft) | p. 435 |
| Rear Oil Seal Housing Cap Screws—Torque | 25 N•m (18 lb-ft) | p. 427 |
| Rear Oil Seal-to-Housing Cap Screws—Torque | 15 N•m (11 lb-ft) | p. 427 |
