'O' ring in the oil filter cover

External Since: May 11, 2004 Posts: 14

Hi,

I replaced the 'O' ring in the oil filter cover (Suzuki GZ125) with a brand
new one but found the groove (holding the 'O' ring) is wider than the
thickness of the 'O' ring. This has resulted the engine oil leaks when the
bike travels. Any idea how to solve this problem?

Thanks in advance,
YC

External Since: Jul 18, 2003 Posts: 1653

NewBie <leongyc.DeleteThis@tp.edu.sg> wrote:

> I replaced the 'O' ring in the oil filter cover (Suzuki GZ125) with
> a brand new one but found the groove (holding the 'O' ring) is wider
> than the thickness of the 'O' ring. This has resulted the engine oil
> leaks when the bike travels. Any idea how to solve this problem?

The groove in the cover is supposed to be slightly wider, and its depth
slightly less, than the O-ring's thickness. This is so the O-ring will
seal tightly between the mating faces machined into the engine cases and
the cover, but the O-ring doesn't need to touch the sides of the groove
in order for it to seal properly.

Is there a large hollow bolt in the center of the filter cover? If so,
that bolt should also have an O-ring on it, to seal between it and the
filter cover. Lubricate the O-ring on the bolt with a little engine oil
before gently working it into the cover, to avoid damaging the O-ring.

If you have the proper sized O-rings, the only reason for a leak is:

1. Wrong or improperly assembled parts.

2. Parts are damaged (scored, scraped, gouged, etc.) or warped, usually
due to overtorquing.

--
Mark '01 SV650S '99 EX250-F13 '86 GL1200A '81 CM400T