Allis-Chalmers 11000 & 11000MKII Engine

The cheapest captured merchant offer per filter — see the full cross-reference below for every OEM/aftermarket option.

Prices captured from merchant listings; some links are affiliate links. Verify against your serial number before ordering.

• Engine will not start.
  Cause: 1. Incorrect starting procedure. 2. Slow cranking speed. 3. Engine controls out of adjustment.
  Fix: 1. Follow correct starting procedure. 2. Specific gravity of battery too low. Charge battery. Starter not delivering maximum torque. Repair or replace defective parts. Use cold weather starting aids if applicable. 3. Check all engine control linkages for proper adjustment.
• Engine will not crank.
  Cause: 1. Batteries weak. 2. Starting system faulty. 3. Engine is locked or seized.
  Fix: 1. Check specific gravity. 2. Refer to Paragraph C. 3. This can be due to extended idle or storage periods, or to improper preparation of the engine for storage, in which case the parts may be rusted or corroded and seized. Broken piston rings, gears, etc., may also cause locking. Repair or replace defective parts.
• Engine stops frequently.
  Cause: 1. Idling speed too low (not applicable to generator drive engines). 2. Restricted fuel supply.
  Fix: 1. Adjust low idling speed. 2. Check fuel system.
• Engine shows loss of power.
  Cause: 1. Insufficient supply of air to cylinders. 2. Insufficient supply of fuel to fuel injection nozzles. 3. Governor not operating properly. 4. Air in fuel system. 5. Clogged fuel filters. 6. Improper valve lash. 7. Fuel injection pump improperly timed. 8. Inoperative fuel injection pump or fuel injection nozzles. 9. Cylinder cutting out. 10. Loss of compression.
  Fix: 1. Refer to Paragraph E. 2. Refer to Paragraph D. 3. Inspect and adjust governor. 4. Refer to Paragraph D. 5. Change filter elements. 6. Adjust valve lash. 7. Time fuel injection pump. 8. Repair or replace affected parts. 9. Refer to Paragraph J. 10. Refer to Paragraph K.
• Engine runs unevenly with excessive vibration.
  Cause: 1. Governor not operating properly. 2. Fuel supply erratic or insufficient. 3. Engine operating temperature too low. 4. Fuel injection pump malfunctions. 5. Valves in bad condition.
  Fix: 1. Remove fuel injection pump and make necessary repairs to governor. 2. Refer to Paragraph D. 3. Refer to Paragraph F. 4. Check fuel injection pump. 5. Recondition valves.
• Engine overheats.
  Cause: 1. Cooling system faulty. 2. Radiator core coolant passages Clogged. 3. Radiator air passages clogged. 4. Fan drive belts loose. 5. Thermostats inoperative. 6. Engine oil cooler clogged. 7. Improper engine lubrication. 8. Water pump malfunctioning.
  Fix: 1. Refer to Paragraph F. 2. Clean and flush radiator. 3. Remove debris from radiator core. 4. Adjust fan drive belts to proper tension. 5. Test the thermostats for proper operation; replace if necessary. 6. Clean or replace the oil cooler core. 7. Refer to Paragraph G. 8. Repair or replace the water pump.
• Engine hard to start.
  Cause: 1. Incorrect starting procedure. 2. Batteries weak. 3. Insufficient fuel in fuel tank. 4. Incorrect grade of fuel. 5. Clogged fuel filters. 6. Fuel injection nozzles not operating properly. 7. Fuel transfer pump not operating properly. 8. Air in fuel system.
  Fix: 1. Follow correct starting procedure. 2. Recharge or replace batteries. 3. Check fuel level in tank. Fill with specified fuel if necessary. 4. Drain fuel system. Fill the tank with the specified fuel. 5. Replace filter elements. 6. Test and repair or replace nozzles 7. Test and repair or replace fuel feed (transfer) pump. 8. Refer to Paragraph D.
• Engine emits bluish-white smoke from exhaust.
  Cause: Engine operating temperature too low.; Fuel injection nozzle valve - stuck in open position.; Low compression.; Early fuel injection pump timing.
  Fix: Check thermostat.; Test and adjust nozzles.; Make compression test and necessary repairs.; Test and adjust.
• Engine detonates or knocks.
  Cause: Fuel pump improperly timed.; Loose bearings.; Loose piston.; Loose flywheel.; Improperly adjusted valve(s).; Foreign material in cylinder(s).
  Fix: Check and adjust.; Replace bearings.; Inspect piston assembly. Replace parts required.; Check tightness of flywheel bolts and dowel. Tighten/replace parts required.; Check and adjust.; Clean and make necessary repairs.
• Starter will not crank engine.
  Cause: Batteries weak.; Cables and/or connections loose or corroded.; Starter switch inoperative.
  Fix: Check batteries.; Tighten all loose connections and clean corrosion from all terminals.; Replace switch.
• Rapid wear on engine parts.
  Cause: Dirt admitted with intake air.; Dirty lubricating oil.; Improper fuel.
  Fix: Inspect air cleaner body, pipe, connecting hoses, gaskets, etc., thoroughly for cracks or openings which would allow air to enter engine without passing through air cleaner. Make necessary repairs.; Change engine oil and the lubricating oil filter elements at the intervals recommended. Keep oil clean when filling engine.; Use the proper fuel. It is important that the fuel be within the specified limits for ash, carbon, sulfur, etc. to prevent excessive wear on engine parts.
• Insufficient fuel supply to fuel injection nozzles.
  Cause: No fuel in fuel tank.; Inoperative fuel feed (transfer) pump.; Fuel injection nozzle valve binding in valve body.; Clogged fuel filters, fuel lines and sediment bowl on early engines.; Fuel injection pump malfunctioning.; Fuel injection nozzles improperly adjusted.
  Fix: Fill fuel tank with specified fuel. Prime fuel system.; Repair or replace feed (transfer) pump.; Replace valve assembly in nozzle holder body.; Clean fuel system components, replace fuel filter elements.; Replace fuel injection pump.; Adjust fuel injection nozzles.
• Insufficient air supply to cylinders.
  Cause: Air cleaner clogged.; Foreign material lodged in turbocharger impeller or turbine.; Excessive dirt buildup in compressor or turbocharger.; Excessive dirt buildup in compressor in short period of time.; Leaks in engine intake and/or exhaust manifolds reducing turbocharger efficiency.; Turbocharger bearings seized.
  Fix: Replace air filter element.; Disassemble and clean.; Thoroughly clean compressor assembly.; Clean compressor assembly, and service air intake system for leaks.; Tighten loose manifold retaining capscrews. Replace manifold gaskets.; Overhaul turbocharger.
• Engine will not start (cont).
  Cause: 4. Insufficient supply of fuel to fuel injection nozzles. 5. Fuel injection nozzles not operating properly. 6. Fuel injection pump improperly timed.
  Fix: 4. Refer to Paragraph D. 5. Test and repair or replace nozzles 6. Time fuel injection pump.
• Engine stops unexpectedly.
  Cause: 1. Out of fuel. 2. Restricted fuel supply. 3. Broken or loose fuel lines.
  Fix: 1. Fill fuel tank with specified fuel and prime the fuel system. 2. Check fuel system. 3. Correct or replace affected parts.

Compiled from service & troubleshooting documentation across every generator set that uses the Allis-Chalmers 11000 & 11000MKII.

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

• Air filter: Allis-Chalmers 30396811 Allis-Chalmers 10662477 Allis-Chalmers 79043778 Allis-Chalmers 0659533 Donaldson P181035 Donaldson P119373 Donaldson P181034 Donaldson P181046
• Coolant filter: Allis-Chalmers 4734562 Allis-Chalmers 74393504 Donaldson P554071 Donaldson P554073 Wix 24071 Ac Delco WF4 Wix 24073 Ac Delco WF114
• Fuel filter: Allis-Chalmers 4347782 Allis-Chalmers 74394335 Allis-Chalmers 4347912 Donaldson P550522 Donaldson P551127 Donaldson P553261 Wix 33073 Ac Delco T553
• Oil filter: Allis-Chalmers 023700057 Allis-Chalmers 105212 Allis-Chalmers 4630787 Allis-Chalmers 101880566 Allis-Chalmers 6379571 Donaldson P550008 Donaldson P550092 Donaldson P553411

Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.

• Allis-Chalmers 12G — Tractor
• Allis-Chalmers 745 — Misc Equipment
• Allis-Chalmers 745B — Misc Equipment
• Allis-Chalmers 745H — Forklift
• Allis-Chalmers HD11AG — Tractor
• Allis-Chalmers HD11B — Tractor
• Allis-Chalmers HD11E — Tractor
• Allis-Chalmers HD11EP — Tractor
• Allis-Chalmers HD12G — Tractor
• Allis-Chalmers TL745 — Loader
• Fiat 12G/B — Loader Tracked
• Fiatallis 11B — Dozer Tracked

Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.