DB990 rockshaft assembly #88 

Excellent video nice little trick you've passed on these little tricks help everyone else and big shout out to Shane

Great bit of engineering with the O ring barry,loved the video.

That went well Barry, a great tip from Shane. Watching this reminded me of when we were building the 90 & 94 series Tractor Cabs at Leigh, The early fixed frames for the glazing was made from a PVC type material which was quite soft but when we changed to a much better rubber frame they were difficult to fit and had to be heated in shallow tin baths full of hot water, this softened the rubber enabling it to be stretches around the glass panels and made it malleable enough to fit into the Cab and Door while it was still hot. Good luck with the reassembly into the Rear Axle Casing!

Yay! It worked!! Yep, I do believe the grunts and groans are required when doing this o-ring stretching procedure. Thanks for the shoutouts and links!

Great video Barry. Very informative and clear. Provides lots of confidence to get stuck in yourself……… but maybe not on valve chest work just yet. Excellent as always.

Crack on Barry. Things are coming together nicely. Neat little trick, heating the O-ring like that. Simple but effective. I like that. Cheers from Denmark 🇩🇰🔧🚜

Hi Barry, that is one hefty bit of kit, good luck with the fitting of it. I do like the way you introduce engineering terms - I haven't clagged anything for years now, perhaps I'll do some on the Fergy Another excellent vid mate, keep them coming!

Good one on getting that O ring in. I used the winch on the Polaris round a pulley to get the rocker shaft in on my996. There is a lot of weight to move and with the valve chest able to rotate you will need 3 hands. I sure you will get it done. Good idea to use a levelling bar on your lifting device.M 😀

Another top class video Barry. Just as an option maybe to think about. When I re-installed my own valve chest I wasn't keen to have the right hand casing sort of dangling on the end of the rock shaft - it seemed to me it would put a lot of twist on the thin bearing in that housing.. Also it's a big old heavy set of metal and with that quadrant lever shaft quite delicate I didn't want to risk swinging the weight of the rock shaft around as I tried to line up that quadrant lever shaft to fit through the axle casing - if it gets bent it would ruin all the settings for the quadrant lever controls. I had no way to support that casing at the same time as supporting the main weight of the shaft. And its pretty easy to fit the valve chest housing in place first with the height/depth push rods in place and just the cam to fit on the studs, so I opted to fit the rocker shaft back in once the casing was in place. Just need to leave the bolts loose to angle the shaft in place to the bearing housing. Just something to consider but coming along nicely. Never knew my hydraulics relied on the donkey dick!

Barry brilliant have the same problem with the same o ring on my little 885 who wouid of thought it wouid stretch over that casting not quite the job I thought it was going to be I may stop putting it of now and give it a go cheers Shane and barry

Now that’s what I call cracking. Right