D330, D333, 3304, 3306 – Fuel Bypass Valve Specifications

Pressure of fuel to injection pump … 25 to 32 psi(1.76 to 2.25 kg/cm2)

(1) 4S6526 Spring for bypass valve:

Length under test force … 1.03 in.(26.2 mm)

Test force … 3.16 ± .16 lb.(1.43 ± 0.07 kg)

Free length after test … 1.88 in.(47.8 mm)

Outside diameter … .70 in.(17.8 mm)

(1) 7H9922 Spring for bypass valve:

Length under test force … 1.03 in.(26.2 mm)

Test force … 2.16 to 2.54 lb.(0.98 to 1.15 kg)

Free length after test … 1.64 in.(41.6 mm)

Outside diameter … .602 in.(15.29 mm)

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