Fuel Pressure Relief Valve

Removal

1. If fuel injection supply manifold (9F792) is mounted to engine, remove fuel tank filler cap (9030) , then release pressure from system at fuel pressure relief valve (9H321) on fuel injection supply manifold using Fuel Pressure Gauge T80L-9974-B.

   NOTE: Fuel pressure relief valve cap (9H323) on fuel pressure relief valve must be removed.

   
   
   
   
   
   

   Item	Part Number	Description
   1A	9H323	Fuel Pressure Relief Valve Cap
   2B	9H321	Fuel Pressure Relief Valve
   3	9F792	Fuel Injection Supply Manifold
   4	9C968	Fuel Pressure Regulator
   5	—	Fuel Supply and Return Connectors (Part of 9F792)
   A		Tighten to 0.6 Nm (5.5 Lb-In)
   B		Tighten to 7.75 Nm (66 Lb-In)

2. Using an open-end wrench or suitable deep well socket, remove fuel pressure relief valve .

Installation

Install fuel pressure relief valve and fuel pressure relief valve cap . Tighten fuel pressure relief valve to 7.75 Nm (66 lb-in) and the fuel pressure relief valve cap to 0.6 Nm (5.5 lb-in).