Rumpith Posted November 25, 2008 Share Posted November 25, 2008 Can't find it now, but a few days I saw a thread about slipping O/D and topping it up. My Haynes manual doesn't say anything about topping up the overdrive... can anyone tell me how and what with? Link to comment Share on other sites More sharing options...
SteveJP Posted November 25, 2008 Share Posted November 25, 2008 Errr - it's that plug on the side of the gearbox (clap) Link to comment Share on other sites More sharing options...
rotoflex Posted November 25, 2008 Share Posted November 25, 2008 The holy D-type overdrive shares its oil with the xmission, so when you top up the xmission you top up the OD.The OD has its own separate drain, though. Link to comment Share on other sites More sharing options...
Richard B Posted November 25, 2008 Share Posted November 25, 2008 Square plug on the side of the gearbox (as Bill says). Plug found by the drivers foot after you take the trasmission tunnel off.Make sure the car is on level ground and fill till it comes out of the 'oriface' :) EP90 for top up. 75W85 for filling from empty. Link to comment Share on other sites More sharing options...
cook1e Posted November 27, 2008 Share Posted November 27, 2008 If you want to make the job easier for the future, make a hatch in the side of the gearbox tunnel ;) Link to comment Share on other sites More sharing options...
JET Posted November 28, 2008 Share Posted November 28, 2008 I have been thinking about this idea for sometime now.How big and exactly where does the hatch need to be if you want to get a spanner on the plug and remove it?Anybody got a dimensioned drawing? Link to comment Share on other sites More sharing options...
sparky_spit Posted November 28, 2008 Share Posted November 28, 2008 While you are at it, cut one for bleeding the clutch slave as well on the other side. Link to comment Share on other sites More sharing options...
Rumpith Posted November 28, 2008 Author Share Posted November 28, 2008 Damned good idea! I've arranged to borrow a ramp at my local garage tomorrow morning, so I'll do it that way for now, but I'll take some measurements for the access hatches while I'm under there. Best thing would be to drill out a couple of holes the right size for those big blind grommets you find in the floorpan of a TR7 I reckon... Link to comment Share on other sites More sharing options...
cook1e Posted November 28, 2008 Share Posted November 28, 2008 The Hatch on my car is about 4 inches high x 6 inches long. The Gearbox tunnel on my car is made of fibreglass and the hatch is a hardboard panel held in with self tappers and spire clips in the corners. See photo for location of the Hatch. Link to comment Share on other sites More sharing options...
JET Posted December 2, 2008 Share Posted December 2, 2008 Thanks Cookie, just what I have been looking for.BTW, what's a spire clip? Link to comment Share on other sites More sharing options...
CharlieB Posted December 2, 2008 Share Posted December 2, 2008 One of these: Link to comment Share on other sites More sharing options...
spitfire71 Posted December 3, 2008 Share Posted December 3, 2008 glad to see I am not the only one to cut holes in gearbox tunnel :) Link to comment Share on other sites More sharing options...
rotoflex Posted December 3, 2008 Share Posted December 3, 2008 The BL tech chopped a hole in my GT6's transmission cover to repair the clutch slave cylinder back in '78 or '79. Link to comment Share on other sites More sharing options...
don cook1 Posted December 4, 2008 Share Posted December 4, 2008 You can reach the level plug from underneath the car and run a plastic hose into from above, I fill mine up that way...err, when I had a Triumph box. Link to comment Share on other sites More sharing options...
JET Posted December 4, 2008 Share Posted December 4, 2008 That's OK Don but you have to get the car up on four axle stands, or a hoist, or have a pit to get under the car, unless your name is GOLLUM.It takes at least two people to get the tube into the plug hole from above and then fill up with oil.There has to be an easier way. Maybe the hatch in the tunnel is the way to go! Link to comment Share on other sites More sharing options...
rotoflex Posted December 4, 2008 Share Posted December 4, 2008 Ramps in front, axle stands in back, lying on the ground beneath is my traditional method. Link to comment Share on other sites More sharing options...
BarryH Posted December 5, 2008 Share Posted December 5, 2008 I'm with Rotoflex and my pump action oil can with piece of flexible tube on the spout to go in the hole and keep pumping until the oil runs down your arm and you bang your head on the gearbox in surprise. Link to comment Share on other sites More sharing options...
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