Sealing Rings ???

FROGGY · 27th November 2007, 11:16

When I removed the Fuel high-pressure sensor on my ZT-T cdti, there were no sealing rings or washers between part 1 and the end of the fuel rail, or between parts 1 and 2. This doesn't seem correct to me, but there is no evidence of any fuel leak.
In pic 1a, there is a shoulder that looks as if there should be an o-ring fitted ? (this would be between the fuel rail and the fitting). Pic 1b shows the opposite end of this piece, which the sensor screws into. There is a sloping shoulder inside, but it doesn't match the shoulder on the corresponding end of the sensor (pics 2a and 2b), so I think there should be a flat washer between these two pieces? The mating surfaces are very flat.
Can anyone tell me what should be fitted in terms of sealing washers please.
Many thanks.
Mick

T-Cut · 27th November 2007, 13:47

Haynes mentions replacing the sealing washer between the sensor and the union. It's not described further, so can't say whether it's a steel one or some other metal. There's no mention of the seal for the union itself, but your image 1A does suggest the use of an O-ring. In this situation, such a ring will be of steel and not 'rubber'. You need someone with a spares catalogue to confirm part numbers.

TC

27th November 2007, 13:47	#2
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,754 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	Haynes mentions replacing the sealing washer between the sensor and the union. It's not described further, so can't say whether it's a steel one or some other metal. There's no mention of the seal for the union itself, but your image 1A does suggest the use of an O-ring. In this situation, such a ring will be of steel and not 'rubber'. You need someone with a spares catalogue to confirm part numbers. TC