Allis-Chalmers 649-T 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.

• High engine temperature shutdown
  Cause: Coolant level low
  Fix: Check coolant level; replenish if necessary
• Fault lamp lights and engine shuts down after running for a period
  Cause: Oil level (engine will shut down if sensor is closed)
  Fix: Check oil level
• Low oil pressure shutdown
  Cause: Oil level low
  Fix: Check oil level; replenish if necessary
• Overspeed shutdown
  Cause: Governor and throttle linkages not free; overspeed switch
  Fix: Check governor and throttle linkages for freedom of movement; check overspeed switch
• Overspeed light on, no shutdown
  Cause: Faulty engine monitor board
  Fix: Disconnect wire at TB11-29; light on after reset; replace engine monitor board
• Overcrank fault lamp lights and engine stops cranking after approximately 75 seconds
  Cause: Fuel system problem
  Fix: See engine service manual for troubleshooting fuel system; after correcting fault, reset engine monitor relay by placing Run-Stop/Reset-Remote switch to Stop/Reset position, depressing Reset button, then to the required running position
• Low oil pressure light ON, no shutdown
  Cause: Faulty engine monitor board
  Fix: Disconnect wire at TB11-30; light ON after relay reset; replace engine monitor board
• High engine temperature light ON, no shutdown
  Cause: Faulty engine monitor board
  Fix: Disconnect wire at TB11-31; light ON after relay reset; replace engine monitor board
• Fault lamp lights, no fault exists
  Cause: Faulty engine monitor board
  Fix: Disconnect leads from TB11 terminals 29, 30 and 31; if fault lamp lights with leads disconnected, replace engine monitor board; reconnect leads
• Fault lamp lights immediately after engine starts
  Cause: Overspeed condition as engine starts
  Fix: Check for overspeed condition as engine starts
• Engine stops cranking and fault lamp lights, after cranking approximately 75 seconds
  Fix: See engine service manual for troubleshooting fuel system; After correcting problem, reset engine monitor relay by placing Run-Stop/Reset-Remote switch to Stop/Reset, then back to the required running position
• Engine runs, shuts down, cranks for 75 seconds, cranking cycle stops, overcrank light ON
  Cause: Fuel supply problem
  Fix: Check fuel supply
• Engine runs, shuts down and cranks for 75-seconds; cranking cycle stops; fault lamp lights
  Cause: Fuel supply problem
  Fix: Check fuel supply

Compiled from service & troubleshooting documentation across every generator set that uses the Allis-Chalmers 649-T.

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

Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.

• Air filter: Allis-Chalmers 264740 Allis-Chalmers 264739 Allis-Chalmers 71181296 Donaldson P526407 Donaldson P526410 Donaldson P119778 Wix 42758 Ac Delco A811C
• Fuel filter: Allis-Chalmers 74036711 Allis-Chalmers 4394407 Donaldson P552603 Donaldson P558000 Ac Delco TP1246 Baldwin BF588 Wix WF10064 Ac Delco TP1002

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

• Allis-Chalmers 8030 — Tractor
• Allis-Chalmers L2 — Combine
• Allis-Chalmers M2 — Combine
• Allis-Chalmers M3 — Combine
• Allis-Chalmers MH2 — Combine
• Allis-Chalmers N7 — Combine

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.