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Home›Repair guides›NOTE 3: Some fuel filters have drain cocks, others do not have drain cocks. All

Allis Chalmers — NOTE 3: Some fuel filters have drain cocks, others do not have drain cocks. All

For these Allis Chalmers models: 6138, 670T-1400 to 2400 rpm, Model 6701-1400 to 2400 rpm, Generator Drive-670T-1500 & 1800 rpm, 685, SERIES 433 & 649, SERIES 6138, SERIES 670, SERIES 685.

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Procedure

  1. 1. Filter header (base) 4. O-ring 7. Filter/water separator ,
  2. 2. Vent screw or plug 5. Threads 8. Drain cock or plug & o-ring
  3. 3. Threaded insert 6. Gasket 9. Filter

Source: manual:Allis_Chalmers_Series_433-649-670-685-6138_Manual-2.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.