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Allis-Chalmers 11000 / 11000MKII Engine

The Allis-Chalmers 11000 / 11000MKII is a 6-cylinder turbocharged engine. It powers generator sets from Allis-Chalmers, including the 11000 MKIT, 11000MKII and T1Q00GMKII. It holds 19.87 L (5.2 gal) of oil and 20.82 L (5.5 gal) of coolant.

Also known as: Allis-Chalmers 11000 / 11000MKII

Cylinders

19.87 L

Oil capacity

On this pageService parts Specs Generator sets Maintenance Filter cross-reference FAQ Service intervals Torque & specs Fluids Procedures

Service parts for the 11000 / 11000MKII

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

Air intake

1 required

30396811Air filterfind

Fuel system

1 required

4347782Fuel filterfind

Oil system

1 required

023700057Oil filterfind

Cooling system

1 required

4734562Coolant filterfind

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

Engine specifications

Oil capacity	19.87 L
Coolant capacity	20.82 L
Cylinders	6
Aspiration	Turbocharged

Generator sets powered by this engine

Allis-Chalmers 11000 MKITAllis-Chalmers 11000MKIIAllis-Chalmers T1Q00GMKII

Common problems

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.

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Air filter			—	1000 hr
Fuel filter			—	1200 hr
Oil filter	Renew full flow oil filters		—	1200 hr
Battery			—	8 hr
Belt	Grease water pump bearings; Grease fan drive pulley hub; Check tension and condition of generator and water pump drive belts.		—	600 hr
Coolant			—	180 hr
Coolant filter	Renew coolant filter		—	1200 hr
Oil	Change engine lubricating oil	21.25 qt	—	600 hr
Spark plug	Make major inspection of engine. Repair or replace parts with excessive wear; Recondition nozzle-holder assemblies.		—	6000 hr

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

Service intervals

Item	Action	Hours	Months	Notes
Air cleaner restriction indicator	Check	8 hr		Replace element if red indicator is visible
Air cleaner to turbo clamps and hoses	Check	8 hr		Check/correct loose clamps or deteriorated hoses
Air compressor air reservoir moisture	Drain	8 hr
Air compressor operation / air reservoir pressure	Check	8 hr
Alternator charging rate	Check	8 hr		After start
Belts and hoses	Inspect	8 hr		Visually inspect for deterioration; check engine/accessories for fuel, lubricant, coolant, air or exhaust leaks
Belts and hoses / engine accessories	Inspect	8 hr		Daily/each 8 hours before starting: visually inspect belts and hoses for deterioration and signs of fuel, lubricant, coolant, air or exhaust leaks
Charging rate	Check	8 hr		After starting
Coolant level	Check	8 hr		Correct as required
Coolant temperature, lube oil pressure, idle/full load speed, air cleaner service indicator	Check	8 hr		Observe for normal operation
Engine	Check	8 hr		Check/correct for knocks or other unusual noises
Engine oil level (RUNNING side of dipstick, low speed)	Check	8 hr		Maintain between running high and low marks after engine reaches operating temperature
Engine oil level (STOPPED side of dipstick)	Check	8 hr		Before starting engine
Engine oil level at idle	Check	8 hr		Maintain between RUNNING ADD and FULL marks
Fuel tank	Drain	8 hr		Drain water
Fuel tank water and fuel supply	Drain	8 hr		Drain water and check fuel supply before start up/end of operation
Fuel water separator	Drain	8 hr		If applicable
Knocks or unusual noises	Check	8 hr
Oil level	Check	8 hr		Use dipstick side marked STOPPED
Oil pressure	Check	8 hr		After starting
Starter performance	Check	8 hr		After starting
Battery cell liquid level	Check	100 hr	6 mo
Battery charging generator	Lubricate	100 hr	6 mo	Lubricate with engine oil if applicable
Battery fluid level	Check	100 hr	6 mo	Check/correct liquid level of battery cells
Battery fluid specific gravity	Test	1000 hr	24 mo
Coolant filter	Replace	600 hr	12 mo	First service — Initial replacement
Coolant filter (initial replacement)	Replace	100 hr	6 mo	Make initial replacement of coolant filter
Engine lubricating oil	Change	100 hr	6 mo
Governor/throttle/stop control swivels	Lubricate	100 hr	6 mo	Using engine oil
Heat exchanger zinc pencils	Inspect	100 hr		When sea water is used in raw water system; replace when over 50% disintegrated
Leaks (lube oil, fuel, coolant, air, exhaust)	Check	100 hr	6 mo	Correct as required
Lubricating full-flow oil filter	Replace	100 hr	6 mo
Lubricating oil filter (bypass, optional)	Replace	100 hr	6 mo	If applicable
Lubricating oil filter (full-flow)	Replace	100 hr	6 mo
Radiator	Clean	100 hr	6 mo	Check/correct external cleanliness and restriction of air through fins
Radiator external cleanliness and air restriction through fins	Check	100 hr	6 mo
Throttle/stop control swivels	Lubricate	100 hr	6 mo	Using engine oil
Oil, full flow filters and bypass filter element (with optional bypass filter)	Change	250 hr	6 mo	Only for engines equipped with optional bypass type oil filter
Alternator and water pump drive belts	Check	600 hr	12 mo	Check tension and condition
Engine breather tube	Clean	600 hr	12 mo	Remove from cylinder head cover; clean with solvent and blow out

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Service specifications

Type	Item	Value	Unit	Condition
Clearance	Backlash between mating gears (front gear train)	0.002 - 0.0045	in
Clearance	Camshaft end play	0.003 - 0.010	in
Clearance	Connecting rod bearing-to-journal clearance	0.0025 - 0.0050	in	nuts tightened to specified torque
Clearance	Crankshaft end clearance	0.006 - 0.014	in
Clearance	Cylinder sleeve inside diameter	4.4370 - 4.4385	in	new part
Clearance	Cylinder sleeve protrusion above top deck of block	0.002 to 0.005	in
Clearance	Main bearing-to-journal clearance	0.002 - 0.0052	in	capscrews tightened to specified torque
Clearance	Oil cooler tube bundle to housing arrow alignment	+/- 0.250	in
Clearance	Piston pin-to-connecting rod bushing clearance	0.001 - 0.0017	in
Clearance	Piston skirt to sleeve clearance	0.0050 - 0.0075	in	new part
Clearance	Rocker arm to shaft clearance (current type)	0.001 - 0.003	in
Clearance	Safety control drive assembly shaft end play	0.001 to 0.035	in
Gap	Drive belt deflection at midpoint	0.25 to 0.50	in	engine drive belts
Gap	Piston ring end gap, 1st ring (chrome compression), deep combustion chamber (early)	0.013 min - 0.033 max	in	fitted
Gap	Piston ring end gap, 1st ring (chrome compression), shallow combustion chamber	0.013 min - 0.028 max	in	fitted
Other	Air cleaner maximum allowable restriction (vacuum)	25	in of water	at load full speed
Other	Air intake restriction at turbocharger air inlet	30	in of water	full speed, full load
Other	Cylinder sleeve protrusion above top deck (current head gaskets)	0.002 - 0.005	in	sleeves clamped in bores
Other	Fuel filter pressure drop across clean filter	1.5 to 2.5	in Hg	full load speed
Pressure	Air intake restriction at turbocharger air inlet (maximum)	30	in of water	full speed, full load
Pressure	Compression pressure at sea level	500 +/- 15	psi	hot, firing on five cylinders at 600 rpm
Pressure	Compression pressure at sea level, 600 rpm	445	psi	normal operating temperature, firing on five cylinders, sea level (derate 3% per 1000 ft above sea level)
Pressure	Engine oil pressure (hot, full throttle)	30 to 55	psi	normal operating temperature
Pressure	Exhaust back-pressure limit (naturally aspirated engine, at exhaust outlet)	3	in Hg	full speed, full load
Pressure	Exhaust back-pressure limit (turbocharged engine, at turbocharger turbine outlet)	2	in Hg	full speed, full load
Pressure	Exhaust back-pressure, total system restriction	2	in Hg	full speed, full load
Pressure	Fuel injection nozzle opening pressure (eff. with S/N 11-27951)	3800-3850	psi
Pressure	Fuel injection nozzle opening pressure (prior to S/N 11-27951)	2800-2850	psi
Pressure	Fuel transfer pump minimum pressure at 150 rpm cranking speed	6	psi	150 rpm cranking speed, speed control in idle
Pressure	Fuel transfer pump pressure	6	psi	minimum at 150 rpm cranking speed
Pressure	Fuel transfer pump pressure relief valve setting	7 to 10	psi	new fuel filters installed
Pressure	Hydraulic governor leakage test air pressure	40	psi	metering valve in OFF position
Pressure	Lubricating oil pressure	10	psi	minimum at idle speed 600-700 rpm
Pressure	Lubricating oil pressure	30 to 55	psi	engine at full load speed 1800 rpm, hot
Pressure	Maximum pressure differential between cylinders	30	psi	at 600 rpm; 50 psi indicates need for detailed inspection
Pressure	Minimum oil flow to turbocharger	10	psi	oil temperature 180 F (355 K)
Pressure	Nozzle opening (popping) pressure	3100-3150	psi
Pressure	Oil pressure at 1800 rpm after regulating valve adjustment	45 to 50	psi	normal operating temperature
Pressure	Radiator pressure cap rating	7	psi
Speed	Full load speed - 50 Hz	1500	rpm
Speed	Full load speed - 60 Hz	1800	rpm
Speed	Full load speed, 50 Hertz	1500	rpm
Speed	Full load speed, 60 Hertz	1800	rpm
Speed	Governor idle speed	1400	rpm
Speed	Low speed - 50 Hz and 60 Hz	1400	rpm
Speed	Minimum speed	1400	rpm	adjusting below 1400 rpm will damage voltage regulator
Speed	Turbocharger maximum speed (continuous operation)	130,000	rpm	continuous type operation
Speed	Turbocharger maximum speed (intermittent operation)	135,000	rpm	intermittent type operation
Speed	Turbocharger maximum speed, Model T-04B, continuous operation	130000	rpm	continuous type operation
Speed	Turbocharger maximum speed, Model T-04B, intermittent operation	135000	rpm	intermittent type operation
Speed	Turbocharger maximum speed, Model TE-06, continuous operation	109500	rpm	continuous type operation
Speed	Turbocharger maximum speed, Model TE-06, intermittent operation	117500	rpm	intermittent type operation
Temperature	Cylinder sleeve flange thickness, current	0.3155 - 0.3170	in	new part
Temperature	Immersion heater thermostat dial range	80 to 140	F
Temperature	Maximum allowable exhaust temperature	1300	F
Temperature	Stabilized coolant temperature (minimum)	180	F
Temperature	Thermostat begins to open	175 to 182	F	in water bath
Temperature	Thermostat begins to open (current type)	180	F
Temperature	Thermostat fully open	202	F	in water bath
Temperature	Thermostat fully open (current type)	200	F

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Recommended fluids

Fluid	Grade	Standard	Capacity	Notes
Coolant	Clean soft water with rust inhibitor, or permanent type antifreeze		14.66 l	Basic engine with dry exhaust manifold 15.5 qts (14.66 l); do not use household softened water; distilled or clean rain water preferred
Coolant	Clean water low in chemical impurities; permanent type antifreeze in winter		22.0 qt	Basic engine only 22 qt (20.82 L); add capacity of applicable optional cooling system equipment; 7 psi (48 kN/m2) pressure cap; do not use antifreeze harmful to aluminum
Engine oil	Multi-viscosity or synthetic lube oil	API CD and MIL-L-45199B		Approved for use in Allis-Chalmers diesel engines
Engine oil	SAE 10W	API CD		Crankcase temperature when starting engine 0 F (255 K) and below
Engine oil	SAE 20/20W	API CD		Crankcase temperature 0 F to 32 F (255 to 273 K)
Engine oil	SAE 30	API CD (formerly DS Series 3, MIL-L-45199B)		Crankcase temperature 32 F to 95 F (273 to 308 K); standard recommendation for normal operation
Engine oil	SAE 30W	API CD		Crankcase temperature when starting above 32 F (273 K)
Engine oil	SAE 40	API CD		Crankcase temperature above 95 F (308 K)
Fuel	ASTM No. 1 and No. 2 diesel fuel oils	Gravity 30-40 API; cetane 40 min; viscosity 1.4-5.8 cSt @100 F; sulfur 0.5% max; ash 0.02% max; water & sediment 0.10% max		No. 2 diesel generally preferred for higher energy content and lower cost
Fuel	No. 2 diesel fuel (No. 1 also within specification)	ASTM No. 1 and No. 2		Cetane 40 min; Viscosity 1.4-5.8 cSt at 100 F; Sulfur 0.5% max; Ash 0.02% max; Water and sediment 0.10% max; Gravity 30-40 API
Grease	Ball and roller bearing lubricant, min melting point 300 F (422 K), waterproof	MIL-G-10924 or equivalent		Angle adaptor grease fitting; do not overgrease
Grease	Ball and roller bearing lubricant, minimum melting point 300 F (422 K), waterproof	MIL-G-10924 or equivalent		Pressure gun lubricant; angle adaptor grease fitting lubricated every 600 hours; do not overgrease
Other	Rust preventive oil SAE 30	MIL-L-21260		Engine storage - fill oil pan to FULL mark and operate 10 minutes

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

Adjusting Alternator and Water Pump Drive Belt Tension adjustment

⚠ Apply force against stator laminations between alternator end frame, not against the end frame.

Tools: Borroughs Tension Gauge BT-33-74

Loosen alternator adjusting brace capscrew and mounting screw.
Move alternator in or out to obtain proper belt tension.
Check tension using a Borroughs Tension Gauge BT-33-74 or equivalent.
Retighten the capscrew.

Fan and Water Pump Belt Replacement and Adjustment adjustment

Tools: Burroughs Tension Gauge (BT-33-72C) or equivalent

Remove battery charging generator drive belt.
Loosen locknut at rear of fan hub spindle.
Lower the hub by turning the adjustment screw counterclockwise.
Remove both old belts and inspect; replace both if either is defective.
Position new belts on pulley grooves.
Raise hub and adjust tension by turning the adjustment screw clockwise.
Tighten the spindle locknut securely.
Install and adjust the battery charging generator drive belt.

Testing and Adjusting Fuel Injection Nozzle adjustment

⚠ Keep hands away from nozzle tip when popping a nozzle; atomized fuel can penetrate skin and cause blood poisoning.

Tools: Nozzle tester with accurate pressure gauge, Nozzle Hole Cleaning Wire and pin vise

Bolt or clamp nozzle tester base to work bench.
Open tester valve, loosen filler cap, operate handle until fuel flows, then close valve.
Connect nozzle holder to tester fuel line and place spray collector under nozzle.
Operate handle with quick strokes and observe opening pressure on gauge.
Loosen adjusting screw locknut; turn pressure adjusting screw IN to increase, OUT to decrease opening pressure.
When specified pressure is obtained, hold adjusting screw and tighten locknut to 60 lb-ft (81 Nm).
Dry nozzle tip and operate handle slowly to about 200 psi below opening pressure; observe for leakage.
Operate handle at about 100 strokes per minute and observe the 4-hole spray pattern.

Valve Lash Adjustment adjustment

⚠ Ensure adjusting screws are turned upward enough after mechanical work so pistons cannot strike valves when cranking.

Tools: 0.018 in feeler gauge

Operate engine to minimum 160 F (344 K) coolant temperature, then stop engine.
Clean valve rocker covers and surrounding area.
Remove breather tube upper section, rocker cover nuts, sealing washers and covers.
Crank engine until No. 6 exhaust valve is almost closed and intake valve starts to open.
Check and adjust intake and exhaust valve lash for No. 1 cylinder to 0.018 in.
Loosen locknut; turn adjusting screw clockwise to decrease or counterclockwise to increase clearance; tighten locknut.
Following firing order 1-5-3-6-2-4, position each cylinder in turn and adjust its valves (5, 3, 6, 2, 4).
Recheck lash after tightening each locknut.

Testing Thermostats diagnostic

⚠ Check water temperature with a reliable thermometer. Do not overheat.

Tools: Reliable thermometer

Suspend thermostat in a container of clean water, fully immersed but not touching sides or bottom.
Heat water gradually and stir so heat is evenly distributed.
Observe thermostat as water temperature increases.
Thermostat should begin to open between 175 to 182 F and be fully open at 202 F.
Travel between open and closed positions must be a minimum of 0.266 in.
If it does not operate within limits it must be replaced.

Thermostat Testing diagnostic

Tools: Reliable thermometer, Container

Suspend thermostat in clean water, fully immersed but not touching bottom.
Gradually heat water and check temperature with a reliable thermometer.
Note temperature at which thermostat starts to open and at which it is fully open.
Travel between open and closed must be minimum 0.310 in (7.87 mm).
Replace thermostats that do not operate within limits; they are not adjustable.

Air Cleaner Cartridge Replacement and Service maintenance

⚠ Do not clean or reuse a dirty cartridge. Do not cover the precleaner face.

Loosen wing/nuts and clamps; remove moisture eliminator or precleaner after removing its flexible hose.
Loosen all four cartridge corners by pulling straight out; remove and discard cartridge.
Inspect dirty cartridge for soot or oil to detect exhaust leaks or breather fumes.
Remove all foreign material from inside the housing.
Install new cartridge; press all edges and corners firmly against the sealing flange.
Clean moisture eliminator or precleaner if necessary.
Install moisture eliminator (drain holes down) or precleaner (dust bin down).
Tighten clamp fasteners in diagonal sequence (hex nut type to 72 lb-in).
Install flexible hose over precleaner elbow and tighten clamp.
Reset service indicator by pressing reset button.

Air Cleaner Element Service - Donaldson Single Element Type maintenance

⚠ Be sure dust cup arrows point up. Do not use oil in dust cup.

⚠ Air pressure at nozzle must not exceed 100 psi when dry cleaning element.

Clean exterior of air cleaner and surrounding area.
Loosen clamp assembly and remove dust cup; loosen wing nut and remove baffle.
Empty and clean dust cup and baffle daily.
Remove foreign material from around filter element.
Assemble baffle to dust cup and tighten wing nut.
Position dust cup on body with arrows up and tighten clamp securely.
Replace filter element when red signal covers exposed window of service indicator.
Reset service indicator by pressing reset button.

Bypass Oil Filter Element Replacement maintenance

Clean filter cover and surrounding area; open drain cock and drain filter.
Remove cover clamp and lift cover; remove cover gasket.
Unscrew element counterclockwise from outlet post and lift from housing.
Clean interior of housing and tighten drain cock.
Install new cover gasket in lip of housing.
Insert element and turn clockwise until firmly seated on outlet post.
Loosen vent plug on top of cover; start engine and run at idle until oil appears, then tighten plug.
Stop engine and check oil level; add oil to FULL mark.

Changing Engine Lubricating Oil and Full-Flow Filters maintenance

⚠ Do not use tools to tighten oil filters.

⚠ Always use Allis-Chalmers replacement filters.

Operate engine until coolant at minimum operating temperature; remove oil pan drain plug and drain oil.
Clean filters and surrounding area.
Unscrew and discard both full-flow filters.
Lubricate gaskets of replacement filters; screw on by hand until gasket contacts base, then tighten one half turn more.
Install drain plug and fill oil pan to FULL mark on dipstick.
Crank engine 15 seconds without starting to fill filters.
Start engine and run about 5 minutes; check for leaks.
Stop engine, allow oil to drain back, and recheck level.

Coolant Filter/Conditioner Element Replacement maintenance

⚠ Do not use soluble oil or other conditioners in a system equipped with a coolant filter.

Thoroughly clean base and surrounding area.
Close coolant inlet and outlet shutoff valves.
Remove exhausted spin-on element and discard.
Lubricate gasket with a thin film of oil.
Install element until gasket contacts base of mounting housing.
Hand tighten 1/2 turn more.
Open inlet and outlet shutoff valves.
Operate engine and check for leaks.

Draining the Cooling System maintenance

⚠ When draining in freezing weather, make certain coolant flows freely from all drain cocks and the system drains completely.

Ensure engine is level for complete draining.
Remove radiator or expansion tank cap.
Open vent cocks in thermostat housing cover.
Open drain cocks on right-hand side of cylinder block.
Open drain cock at bottom of timing gear housing.
Open drain cock at bottom of radiator if applicable.
Open drain cock or plug at rear of water-cooled exhaust manifold if applicable.
Remove coolant filter or filter drain plug (leave shutoff valves open).
Open drain cock in expansion tank end bonnet to drain raw water if applicable.
Loosen raw water pump end cover to drain raw water; tighten cover screws before starting.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Filters for this engine

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.

Also used in

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.

Common questions

What is the oil capacity of the Allis-Chalmers 11000 / 11000MKII?

The Allis-Chalmers 11000 / 11000MKII engine has an oil capacity of 19.87 liters.

Which generators use the Allis-Chalmers 11000 / 11000MKII engine?

The Allis-Chalmers 11000 / 11000MKII powers 3 generator set(s), including Allis-Chalmers 11000 MKIT, Allis-Chalmers 11000MKII, Allis-Chalmers T1Q00GMKII.

What oil filter does the Allis-Chalmers 11000 / 11000MKII use?

The Allis-Chalmers 11000 / 11000MKII uses oil filter part numbers Allis-Chalmers 023700057, Allis-Chalmers 105212, Allis-Chalmers 4630787.

What fuel filter does the Allis-Chalmers 11000 / 11000MKII use?

The Allis-Chalmers 11000 / 11000MKII uses fuel filter part numbers Allis-Chalmers 4347782, Allis-Chalmers 74394335, Allis-Chalmers 4347912.

What air filter does the Allis-Chalmers 11000 / 11000MKII use?

The Allis-Chalmers 11000 / 11000MKII uses air filter part numbers Allis-Chalmers 30396811, Allis-Chalmers 10662477, Allis-Chalmers 79043778.

How often should you change the oil in the Allis-Chalmers 11000 / 11000MKII?

The Allis-Chalmers 11000 / 11000MKII oil change interval is every 600 hours.

What is a common problem with the Allis-Chalmers 11000 / 11000MKII engine?

A commonly reported issue on generators using the Allis-Chalmers 11000 / 11000MKII is: 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..