Below pic: hpfp removed from engine.
1) the large round black plastic cap protects the 6 sided nut on top of the intake valve from being turned.
2) the electric connection on the left is for the fuel metering valve. N290 This valve can be inspected with the hpfp still on the engine by removing two T-25 torx screws. Any metal at the fuel metering valve is signs of a hpfp problem.
3)the shaft toward the front is the cam. A gear is mounted on this tappered shaft. The TB mounts on this gear. Although the TB turns this shaft/cam the hpfp is not a timed pump. All injection timing is done by the ECU and electronic fuel injectors.
4) the cam/shaft is held in place by the front hpfp cover which can be removed by removing 4-T40 torx screws. This cover has a bearing material,seal and fuel lube port for the cam shaft.
I'll be adding to this thread as I have time to post more info and pics.
dweisel
LUBRICITY,LUBRICITY,LUBRICITY!
1) the large round black plastic cap protects the 6 sided nut on top of the intake valve from being turned.
2) the electric connection on the left is for the fuel metering valve. N290 This valve can be inspected with the hpfp still on the engine by removing two T-25 torx screws. Any metal at the fuel metering valve is signs of a hpfp problem.
3)the shaft toward the front is the cam. A gear is mounted on this tappered shaft. The TB mounts on this gear. Although the TB turns this shaft/cam the hpfp is not a timed pump. All injection timing is done by the ECU and electronic fuel injectors.
4) the cam/shaft is held in place by the front hpfp cover which can be removed by removing 4-T40 torx screws. This cover has a bearing material,seal and fuel lube port for the cam shaft.


I'll be adding to this thread as I have time to post more info and pics.
dweisel
LUBRICITY,LUBRICITY,LUBRICITY!