Rear suspension wishbones: a cautionary tale

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DevonAid
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Rear suspension wishbones: a cautionary tale

Post by DevonAid »

Despite regular spannering and checking of our van, the offside rear suspension wishbone was suddenly found to be in urgent need of replacement.
Whilst it's always good to replace suspension and brake components in pairs, sometimes there isn't always time to do it immediately, but I also gave the nearside rear a decent inspection to be able to plan ahead, but with no obvious issues found.
But thought best to give it a second closer look - and found a clear crack on one of the bush housings. Hard to see, particularly when the rear of the vehicle is jacked up via the crossmember, as the wishbones drop down, hiding the crack.

Image
Nearside rear, looking rearwards, first inspection


Image
Nearside rear, looking rearwards, second inspection

Brickwerks comments on this component states:
'Corrosion on the originals starts from the inside and works it’s way out so by the time you see it it’s too late.
And we know from experience that MOT tests don’t always pick up the corrosion – usually around the rubber mounts'
I now concur with their comment and encourage closer inspection!

I found replacing both suspension wishbones (and inevitably the brake backplates and some brake components) quite a challenge (including cost of parts, needing to cut off some seized bolts, other local works identified) but recently completed it with success. I planned ahead, checked YouTube vids, got my wife to bring plenty of tea and snacks down to the garage etc which all helped.
We've since got back from a short trip with the van loaded to the gunnels with people and stuff: doesn't bear thinking about 'what if' on the old degraded suspension wishbones.

Hope these observations are helpful to others.
1983 T25 Devon conversion 1.9DF

colinthefox
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Re: Rear suspension wishbones: a cautionary tale

Post by colinthefox »

Great pictures and great advice.........thank you.

I'll check mine :D.
1.9D (AEF) pop-top. Aaaaahhhhh........that's better.
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maxstu
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Re: Rear suspension wishbones: a cautionary tale

Post by maxstu »

Good info. Thanks for the write up.

:ok
MaxStu
1987 DG1.9 LPG Auto Autosleeper. Soon to be 2.1
"Blissfully happy in your presence".

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matteo
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Re: Rear suspension wishbones: a cautionary tale

Post by matteo »

Thanks for flagging this, I never pay much attention to the wishbones and suspension. 
1980 2l CU Aircooled; left-hand drive - now officially a historic vehicle!

SurfT25
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Re: Rear suspension wishbones: a cautionary tale

Post by SurfT25 »

In Feb 22 I had an advisory off my mot to replace the rubbers on my drivers side wishbone.
Grabbed it to try and loosen and my thumb went through the side of it :shock:
Image
Goes to show things aren't what they seem.
:lol:
Prepare for the worst but hope for the best

1984 1.9 DG WBX Autohomes hightop

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