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Home›Repair guides›B. Pressure relief valve

Allis Chalmers — B. Pressure relief valve

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. Nozzle holder assembly 5. Drain cock 10. Pressure relief valve
  2. 2. Drip manifolds 6. Vent plug 11. Transfer pump
  3. 3. Fuel return lines 7. Secondary filters 12. Hand primer pump
  4. 4. Primary filter with water — 8. Fuel tank cap (vented type) © 13. Fuel injection pump

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.