torque for glass bowl filter

P

pcatterall

Well-Known Member
Joined
2 Aug 2004
Messages
5,507
Location
Home East Lancashire boat Spain
Visit site
Still working on locating fuel/air leak in my system which only occurs after a long period on tick over.
I was advised that the torque on the filter housing should be 10 lbs on a foot. I guess that this has to be 20lbs on the end of my 6 inch spanner??
Does this also apply where a glass bowl is employed? I feel very nervous putting even that load on mine.
Thanks
 
If your glass bowl is screwed in I would do it hand tight the same as a canister filter. If it is held on by a metal strap then push the strap under the bottom of the bowl and screw the wing nut hand tight. 10ft/lbs of torque is about wrist tight. Just make sure the seal/o-ring is in good condition and has a this coating of fuel/oil. If your hands are clean and not too slippy you will be able to tighten it more than enough with out tools. If you think the filter assembly is a source of air I would check the sealing washer on the bleed screws (probably either copper or fibre).
 
cryan said:
If your glass bowl is screwed in I would do it hand tight the same as a canister filter. If it is held on by a metal strap then push the strap under the bottom of the bowl and screw the wing nut hand tight. 10ft/lbs of torque is about wrist tight. Just make sure the seal/o-ring is in good condition and has a this coating of fuel/oil. If your hands are clean and not too slippy you will be able to tighten it more than enough with out tools. If you think the filter assembly is a source of air I would check the sealing washer on the bleed screws (probably either copper or fibre).
Click to expand...

Sound advice, make sure the bowl seal is not twisted and check the old seal is removed if replacing.
 
ghostlymoron said:
It's a CAV retained by a central bolt.
Click to expand...

In that case I would tighten it to what's known as, "Just nipped." This basically means finger tight then put a spanner on it and give it another quarter of a turn to just nip the seal a little bit. This probably equates to about 10-15ft/lbs. You should be able to feel the seal squish a bit through the spanner.
 
Thanks all. It does sound a bit of a naff question, most of us just tighten until it 'feels' right but with this very slight leak problem and my special concerns with the glass it is nice to get a sort of 'proper' value on the torque. Yes pvb, the bowls are thick and sturdy( and I do have a spare!!
 
When changing your filter and bowl make sure you change all three of the rubber seals and smear them with oil before fitting. A good tip is to use a small mirror to see that the seals are seated properly. As for torque, you will snap the bolt before you break the bowl! New fuel filters come with o rings but you will probably need extra for the glass bowl and the base plate.
 
NornaBiron said:
When changing your filter and bowl make sure you change all three of the rubber seals and smear them with oil before fitting. A good tip is to use a small mirror to see that the seals are seated properly.
Click to expand...

Good advice, and worth remembering that the large diameter seals come in 2 different sizes - it's important to get them in the correct places.
 
You must log in or register to reply here.

Share this page

Top