All 100 pages of this International BC-144, BD-144, BD-154 Service Manual (OEM #SM12A) zero in on the internals of three closely related gasoline and LPG engines. Open it and you get a full standard torque data section, detailed clearance tables for every valve, bearing, and sleeve, plus page after page of exploded-view diagrams covering the timing gear train, lubrication system, governor, and carburetor. The LPG attachment gets its own dedicated chapter, from vapouriser regulator to priming solenoid, with adjustment procedures you won't find in a generic reference. Hold inlet valve stem diameter to 0.341/0.342 in with a clearance-in-guide of 0.002/0.004 in; on BD-144 and BD-154 engines, torque the nozzle body stud to 20/30 lb ft. Your engine is on the bench and the spec matters. One download, bookmarked by section; search any number, find your answer, get back to work.
What's Inside This International BC-144, BD-144, BD-154 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 9-22 | Introduction, Bolt Identification Chart, Standard Torque Data, Specifications |
| Anifolds, Cylinder Head and Valves | 23-32 | Manifolds, Cylinder Head and Valves, Valve Lever Shaft Assembly, Cylinder Head |
| Connecting Rods, Pistons, and Cylinder Sleeves | 33-40 | Connecting Rods, Pistons and Piston Rings, Cylinder Sleeves, Connecting Rod and Piston Assembly, Conditioning Schedule |
| Lubrication System | 41-48 | Oil Pump, Lubricating Oil Filters, Pressure Regulating Valve, By-Pass Valve |
| Cooling System | 49-54 | Water Pump, Thermostat, Fan Belt, Fan, Thermostat Housing, Fan Belt Adjusting Pulley |
| Timing Gear Train, Front Cover and Camshaft | 55-62 | Gear Train, Camshaft, Front Cover, Timing Gears, Camshaft Bearings |
| Crankshaft, Main Bearings and Flywheel | 63-70 | Flywheel, Crankshaft Bearings, Crankshaft, Heli-Coil Thread Inserts |
| Governor | 71-76 | Governor Drive Gear, Governor Spring, Rockshaft Lever, Low Idling Speed Stop, High Idling Speed Stop |
| Carburettor | 77-86 | Adjustments, Float Chamber, Strangler Assembly, Throttle, Choke Tube, Main Jet |
| L.P.G Attachment | 87-100 | Fuel Storage Cylinder, Fuel Filter and Lock-Off Valve, Vapouriser Regulator, Carburettor, Priming Solenoid, Adjustments |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Inlet valve stem diameter | 0.341/0.342 in | p. 15 |
| Inlet valve clearance in guide | 0.002/0.004 in | p. 15 |
| Valve lever shaft diameter | 0.748/0.749 in | p. 15 |
| Valve lever running clearance | 0.002/0.004 in | p. 15 |
| Nozzle body stud or bolt to cylinder head torque | 20/30 lb ft | p. 16 |
| Nozzle body nut to stud torque | 30/35 lb ft | p. 16 |
| Cylinder head bolts torque | 75/80 lb ft | p. 16 |
| Connecting Rod Bolts Torque | 40/45 lb ft | p. 16 |
| Crankcase Drain Plug Torque | 35/40 lb ft | p. 18 |
| Main Bearing Cap Bolts Torque (New Caps) | 95/100 lb ft | p. 20 |
| Flywheel Bolts Torque | 65/70 lb ft | p. 20 |
| Pressure Regulating Valve Opening Pressure | 30 to 35 lb/in² | p. 18 |
International BC-144, BD-144, BD-154 Common Problems This Manual Covers
International BD-144 diesel engine cranks repeatedly but fails to fire in cold weather p. 16
Check fuel lines for air and confirm the stop control is fully released before cranking. Torque the nozzle body stud or bolt to the cylinder head to 20/30 lb ft, and the nozzle nut to stud to 30/35 lb ft per page 16. Inspect the pre-combustion chamber for cracks or heavy carbon buildup.
Manual Section: Anifolds, Cylinder Head and ValvesPre-combustion chamber cracked with fragments broken loose and found inside cylinder bore p. 16
Remove the cylinder head and extract the pre-combustion chamber. Inspect the chamber throat and rim for heat cracks or missing material. Replace any cracked chamber. Reinstall and torque all cylinder head bolts to 75/80 lb ft in the correct sequence per page 16.
Manual Section: Anifolds, Cylinder Head and ValvesValve stem shows lateral movement inside guide, oil consumption increases noticeably at speed p. 15
Remove the cylinder head and measure valve stem clearance in the guide. Clearance must be 0.002/0.004 in for both inlet and exhaust valves, with guide inside diameter at 0.344/0.345 in per page 15. Replace worn guides and reface valve seats to a 45-degree angle before reassembly.
Manual Section: Anifolds, Cylinder Head and ValvesRocker arm assembly moves side to side on shaft, persistent tapping noise at valve cover p. 15
Check the valve lever shaft diameter; it must measure 0.748/0.749 in, with bushing inside diameter at 0.751/0.752 in, giving a running clearance of 0.002/0.004 in per page 15. Replace worn bushings or the shaft if clearance exceeds limits. Torque the tappet adjusting screw nut to 20/25 lb ft on reassembly.
Manual Section: Anifolds, Cylinder Head and ValvesOil pressure warning light stays on or pressure reads below normal at idle p. 18
Check engine oil level first, then verify the pressure regulating valve opens at 30 to 35 lb/in² per page 18. Remove and inspect the oil pump, checking all internal clearances and backlash as covered in the Lubrication System section. Replace the pump if any clearance is out of specification.
Manual Section: Lubrication SystemFrequently Asked Questions
What are the torque specs for BD-144 and BD-154 engine bolts?
For BD-144 and BD-154 engines, cylinder head bolts should be torqued to 75/80 lb ft, and connecting rod bolts to 40/45 lb ft. Main bearing cap bolts require 95/100 lb ft for new components and 80/85 Max lb ft for old ones. A comprehensive table for various bolt sizes and components is available in the manual.
How do I reset the fuel system on an International BD-144 diesel engine?
To reset the fuel system on an International BD-144 diesel engine, you need to bleed the fuel system. The detailed procedure for this is not provided directly in this service manual but is outlined in the relevant Operator's Manual or the "FUEL INJECTION SERVICE MANUAL SM-11".
What is the bore difference between BD-144 and BD-154?
The BD-144 Series engine has a bore of 3-3/8 inches, while the BD-154 Series engine has a bore of 3-1/2 inches. This results in a bore difference of 1/8 inch between the two series.
How to reset injector pump on BD-154
Detailed information on the fuel injection equipment, including procedures for the injector pump on BD-154 engines, is not provided in this manual. For specific instructions, refer to the "FUEL INJECTION SERVICE MANUAL SM-11".
What are the replacement specifications for Pre-combustion chamber?
When replacing pre-combustion chambers in diesel engines, new pre-combustion chamber gaskets must be installed. The chambers should then be inserted using aligning tool number IH 3454, as shown in Fig. 13, to ensure correct positioning and prevent damage to the glow plug element.
How quickly can I access this manual?
This is a 100-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Can I print specific sections of this International BC-144, BD-144, BD-154?
The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
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