Rust treatment and repairs

Post by **nomashedswede** » 24 Nov 2008 07:31 pm

srtames wrote:Pete Farrel is right about the rear chassis T joins. there are no drain holes here to let out condensation and internal ventilation is blocked by a baffle . Would putting in drain holes merit an mot fail ?
Luckily I found this weak point before the rust ate through but Volvo should be wrapped on the knuckles for such poor design!

regards, Steve

Is this the area numbered 65 in Tom`s diagram ?

Post by **srtames** » 25 Nov 2008 02:38 pm

lube point 65 does not completely rustproof. About 12 in and to the right of 62 be the nearest as there is an internal baffle which you can see marked with a thin line . Pete Farrel has some good pictures of the internal construction as he opened up the boot floor with an angle grinder !
There is an internal horizontal sandwich also that holds the diff crossmember bolts and traps condensation which cant get out!

regards Steve

Post by **nomashedswede** » 26 Nov 2008 09:17 am

Thanks Steve - I`ll have a poke around at the weekend, and get the Waxoyl out.

Post by **srtames** » 16 Apr 2009 05:42 pm

Interesting to see how a volvo garage did the T chassis repair near the petrol tank. But at the risk of being pedantic what about the drain channels that were there originally? Though you could say it was the drain channels that caused the Rust! Pity volvo did not originally put a 1 inch drain hole there. I would pour lots of dinitol in there to stop moisture getting behind the repair!

regards, Steve

Post by **Duvel78** » 21 Apr 2009 02:37 am

I've taken pictures on a donor car, the second one from the inside is interesting: you can see that the channels are blocked...

: drainchannel1.jpg (87.76 KiB) Viewed 2432 times

Inside:

: drainchannel.jpg (47.51 KiB) Viewed 2431 times

Post by **srtames** » 24 Apr 2009 02:15 pm

hi Duvel, interesting internal photo there. From a structural point of view the rust bubbles in the crossmember overlap should not weaken the chassis join much as the spot welds are outside that area. But our mot regs are too vague and the test is a matter of the testers opinion. I still think a nice large drainage hole would be better than those tiny drain channels but you tell the mot tester that!

keep up the good work. Steve

Rust treatment and repairs

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Re: Rust treatment and repairs