Robin Posted October 24, 2015 Report Share Posted October 24, 2015 Hi All Where is the best front and rear jacking points for a trolley Jack i.e both wheels off the ground? Thanks Link to comment Share on other sites More sharing options...
68vitesse Posted October 24, 2015 Report Share Posted October 24, 2015 I use under the diff at rear and the chassis cross member in front of the sump for front. I have a MK1 Vitesse. Never trust a jack when working on a car. Regards Paul Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 24, 2015 Report Share Posted October 24, 2015 Make sure you jack the back on the crossmember and not on the diff housing. keep an eye on the angle of the chassis doesnt invoke a slip out of the jack cup. if you have axle stands its better if you cut a block of decent timber to fit the forked top and gives a flat face to sit the chassis on pete Link to comment Share on other sites More sharing options...
JohnD Posted October 24, 2015 Report Share Posted October 24, 2015 No argument with Peter! Here's a sketch of the wooden pad I've made as he suggests. The notch fits into the front of the cross member, and the wood in front is narrow enough to fit between that and the diff. But it's not too thick, so I've reinforced it with two long wood screws, straight down in to the bulk of the pad. A hole drilled through the other end allows a cord through it to hang on the wall, so it doesn't get lost. Link to comment Share on other sites More sharing options...
mishmosh Posted October 24, 2015 Report Share Posted October 24, 2015 yup avoid diff. Tempting but can damage the mounts. Ditto avoid the sump ! ( seen it !!!!!) Link to comment Share on other sites More sharing options...
Colin Lindsay Posted October 25, 2015 Report Share Posted October 25, 2015 I use the main chassis rail at the point where the side outriggers join front or rear; a good strong flat piece of inch-thick wood on top of the trolley jack spreads the load. I don't jack or support the car on the diff. Link to comment Share on other sites More sharing options...
Robin Posted October 25, 2015 Author Report Share Posted October 25, 2015 Thanks guys! Link to comment Share on other sites More sharing options...
68vitesse Posted October 25, 2015 Report Share Posted October 25, 2015 Been jacking my car under diff for years without problems, spring is mounted to diff so weight of car at rear is supported by diff mountings in normal running. Interested why you think this is a problem. Regards Paul 1 Link to comment Share on other sites More sharing options...
Gary Flinn Posted October 25, 2015 Report Share Posted October 25, 2015 Been jacking my car under diff for years without problems, spring is mounted to diff so weight of car at rear is supported by diff mountings in normal running. Interested why you think this is a problem. Regards Paul I agree, the Diff is very securely mounted to the chassis, I've jacked my Vitesse up there before and had no problems? As stated before though never go under a car with just the Jack for support, Axle stands are a must and I always chock the Opposing wheels not being jacked up. Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 25, 2015 Report Share Posted October 25, 2015 Its the base of the diff case is not designed to support the weight of the car Bear in mind the triumph approved jack points are at the ends of the front and rear outriggers Where they join the side rails and we know what some of them look like ........some worse than a bit rusty pete Link to comment Share on other sites More sharing options...
68vitesse Posted October 25, 2015 Report Share Posted October 25, 2015 Niether is the front chassis crossmember but is still capable of taking the weight. Regards Paul Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 26, 2015 Report Share Posted October 26, 2015 In basic priciples you dont want to jack any car from its units . and any jacking must take age degradation of chassis ,sub frame or monocoque into how and where you do this operation safely. Each to their own , preference is based on car designed recomendations and experiences pete Link to comment Share on other sites More sharing options...
Colin Lindsay Posted October 26, 2015 Report Share Posted October 26, 2015 Interested why you think this is a problem. If that's my post you're referring to, I don't at any point say it's a problem. I just don't jack my car under the diff in case the curved diff casing allows the jack to slip off. It's a personal choice, not an instruction. Link to comment Share on other sites More sharing options...
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