Oil relief valve - serpentine engine

[MBV511EAE]

Hi all,

It's numpty question time again......
I think my oil relief value spring has snapped.
Can anyone tell me how I get at it so I can check?

I'm working on the rockers, lifters and on my way to the camshaft.

I have the bonnet off at the moment but is it a big job to get to the relief valve?

If it is knackered can anyone point me in the right direction for a replacement spring or refurbished pump mechanism?

Mine is a 1999 450 Serpentine

Cheers

Matt

[MBV511EAE]

bump

[v8 racing]

The relief valve can be got to but is a little pain! it is on the off side of the front cover just above and round the side of the oil filter housing, it looks like a core plug about the size of a 10 pence and is held in with a circlip, when you take the circlip off make sure your head is not in line with it!! silly i know but the springs are fairly strong and you may end up with a black eye!! just out of interest i have never had one snap?.

[David Beer]

Are you sure its not just the sender ? Iam have got through 2 in 2 years and the current one has now gone !

[MBV511EAE]

Hi all

Thanks for the directions :-)
I think its a combination - sender - gauge and relief valve spring.

Anyone know where I can get a new spring?
Gauge is under-reading by about 7.5 or 15 psi - not entirely sure if that's the gauge or sender.

Cheers

Matt

[David Beer]

Hi all ? Once you get the calibration bit, see what you get, my bet is all is down to the sender.

[MBV511EAE]

Hi David,
No idea where my 'hi all' came from earlier?! Stooooopid fingers......

This it's a sender/relief valve double whammy - I've been working on the car since 10am and can't get the relief valve out of the housing - totally wedged in. Spring is a funny length too - it's only 50MM not the 60MM it's supposed to be.

Got the sender off of my friends 450 - swapped them over and a more healthy - but still well down pressure reading.....

Matt