1rotty 40 Report post Posted August 3, 2009 Guys,my 98 740 has the hydraulic boot system.(as opposed to the soft open/close setup) The hydraulic piston has obviously been leaking but after turning the car into a bomb site I cant find the pump and/or reservoir. Your help is eagerly awaited. Quote Share this post Link to post Share on other sites
*Glenn* 854 Report post Posted August 3, 2009 Its behind the inner guard liner in the boot, on the R/H side above the battery. Make sure you use the correct fluid for it Quote Share this post Link to post Share on other sites
1rotty 40 Report post Posted August 4, 2009 Thanks Glenn.I found it this avo after I discovered the open button & heard the pump. Next question-how do you top it up-I'm assuming the reservoir is the white "bowl" on the left? Can it be done in place?& do you know the required fluid. Cheers Mark Quote Share this post Link to post Share on other sites
*Glenn* 854 Report post Posted August 4, 2009 (edited) It can be done in place The kit part # 51 24 8236 504....its not cheap, dealer only $151.85 + Gst The brand of the oil is HOERBIGER.... part# HB92938-204B I don't know where else you might buy it though I can fax you the repair/fill instructions if you like Edited August 4, 2009 by *Glenn* Quote Share this post Link to post Share on other sites
1rotty 40 Report post Posted August 5, 2009 Thanks Glenn.I've found the fill instructions so will try topping it up before I get a kit. I'll try & find someone with a fax. Quote Share this post Link to post Share on other sites
*Glenn* 854 Report post Posted August 5, 2009 (edited) Thanks Glenn.I've found the fill instructions so will try topping it up before I get a kit. I'll try & find someone with a fax. What are you going to top it up with though? Be careful what you try and use.. the lift motors cost over $1,000 Edited August 6, 2009 by *Glenn* Quote Share this post Link to post Share on other sites
1rotty 40 Report post Posted August 6, 2009 Definitely the ex dealer oil-realoem list the hydro at US $1500 so I wont be taking any chances. Quote Share this post Link to post Share on other sites
*Glenn* 854 Report post Posted August 6, 2009 Thanks Glenn.I've found the fill instructions so will try topping it up before I get a kit. The kit is the only way you can buy the oil. I was going to suggest using cabriolet hydraulic oil, but no one can tell me if its the same. I have about 50m of the proper oil left in my top up bottle if that will help. You might need more though Quote Share this post Link to post Share on other sites
1rotty 40 Report post Posted August 7, 2009 Mate you must think I'm a real dumbarse. You're right!!! I was confused about the 'kit' but after a visit to my friendly BMW parts guy I now have a handle on the deal. The kit is ordered-thanks for your offer. I really appreciate your help Quote Share this post Link to post Share on other sites
