Operation 12-3 To test

To test

Operation 11-6

1 Remove the two outlet fuel pipes from the electric fuel lift pump and filter assembly, make note of the location of the pipes to ensure that the pipes are fitted correctly. 2 Connect two suitable rubber hoses to the outlet pipes (feed to fuel infection pump and return to the fuel tank), and place into a three litre measuring cylinder. 3 Operate the engine until a consistent flow of fuel is running from the outlet pipe of the fuel injection pump. Note: The return pipe to the fuel tank will have a slower flow than the feed pipe from the fuel injection pump. 4 The combined flow of both pipes should be at a rate of two litres/per minute as a minimum. 5 If the flow is less than two litres/per minute, replace the electric fuel lift pump and filter assembly. 6 Connect the electric fuel lift pump outlet pipes in the correct position. 7 Operate the engine and check for leakage of fuel and that there is no air in the system.

To test pressure regulator

Operation 11-7

1 Remove the fuel lift pipe from the fuel injection pump, fit a suitable pipe with a pressure test point and connect a 0-80 kPa (0-12 lbf/in2) 0-0,8 kgf/cm2 pressure gauge. 2 Operate the engine at idle for two minutes to allow any trapped air to be removed. 3 The reading on the pressure gauge should be as below: Bosch EPVE = 31 kPa (4.49 lbf/in2) 0,31 kgf/cm2 at idle, and rated speed 31 kPa (4.49 lbf/in2) 0,31 kgf/cm2 Bosch VP40 = 27,5 kPa (3.98 lbf/in2) 0,28 kgf/cm2 at idle, and rated speed 24kPa (3.48 lbf/in2) 0,24 kgf/cm2 Delphi DP210 = 27,5 kPa (3.98 lbf/in2) 0,28 kgf/cm2 at idle, and rated speed 28kPa (4.06 lbf/in2) 0,28 kgf/cm2 4 The combined flow of both pipes should be at a rate of two litres/per minute as a minimum. 5 Connect the fuel lift pipe to the fuel injection pump. Operate the engine at idle for two minutes. Note: If the fuel lift pump and filter assembly does not meet the above specifications check for the following; that all the electrical connections are fitted, there are no leaks in the pipes and connections, that the seal on the drain tap does not leak and that the “O” ring for the canister to the lift pump does not leak.