![]() (I have two floor jacks though it's not necessary. 2-ton floor jack w/ second chock, heavy floor jack and nitrile gloves, (on towel) small vice-grip pliers, handle w/ 11mm socket, yellow funnel w/ sleeve, my "MacGyvered" brake bleeding apparatus, baster syringe, torque wrench w/ 17mm socket, wheel bolt wrench, 7mm combination spanner (wrench), and 1 L can of Ate blue brake fluid (enough for both 7's). Here's how I did it:Īssemble tools and supplies - Clockwise from the wheel chock at 10 o'clock, alum. Īuthor: WTH (moderator) : member since December, 2003 : 4262 postsīMW recommends brake fluid be changed every 24 months. BMW would charge ~�80 for a brake fluid change alone.Įdit 06.05.10 to add in reference to TX25 screws that need to be removed from the undertray prior to its removal.Subject: Brake Fluid Change - What I did - Step by step. I then reset the iDrive for both pollen filter (35,000 miles till new ones) and brake fluid replacement (2 years) and logged this in my service book referencing the BMW invoice for the BMW parts.Ĭost ~�70 for BMW brake fluid (2 litres) and BMW pollen filters and it took me and my dad about 2 hours.Įasy but most enjoyable. I'll let you guess which one is the old and new one. Make sure you get the air flow direction correct, there are markings on the filters. Don't worry about the colour of the fluid in the bottle, there was some left over blackcurrent juice in it which made the whole lot go blood red and not Irn Bru colour!ĭo the front offside last as this has the least amount of fluid in the system.Īs Haynes would say, refitting is reversal of removal but I installed new pollen filters. I don't know that's more so the bigger engined stuff as the front brakes are so large. When pumping the brake pedal on the front brakes, keep a very close eye on the reservoir level as a much large quantity of fluid will come out with each pedal stroke compared to the rears. I turned the steering lock so that the caliper was facing out to improve access. Check for leaks then put the wheel back on and then repeat for the other rear wheel. If you get air into it you need to start again! Once new fluid (much lighter in colour) came out the non return valve tighten the bleed screw. Make sure that you regularly keep topping up the reservoir with new fluid. My dad then pumped the brake pedal to the floor and I held the non return valve in the container until I noticed a change in the fluid colour. Old fluid is much darker than the new stuff. I siphoned out as much of the old fluid from the reservoir first to save having to pump it thru the system. Clean around the bleed nipple then crack open the bleed nipple by half a turn and place the bleed kit on to it and the other end into a container to catch the old fluid. ![]() Starting with that one gets rid of the old fluid first. This is the furthest point from the reservoir so has the most fluid in it. ![]() Jack up car and remove rear nearside wheel. Now wiggle the undertray which is two parts now joined by the rear bonnet seal off from the rear of the engine bay and sit down out the way. There are two water channel trays (they have the round holes in them that you can see in the picture 2 above) at either end of the undertray tucked under the bonnet struts/hinge area, these just lift out. There is a clip that connects both sides of the undertray together which sits in the middle, slid this to the nearside and lift off. ![]() There are also two TX20 screws that need to be removed from the top of each of the suspension struts.Īgain with the 8 mm allen key rotate all the fixings on the undertray thru ~90deg to free them. Unclip the pollen filter housing at the inboard ends (photo above already shows unclipped) and then using a 8 mm allen key turn thru ~90deg to release clip and lift off housing with filter still inside. Unplug the bonnet sensor wiring from the switch on the offside pollen filter housing. My front calipers are rather large so held a lot of fluid so I was glad I had bought the two bottles of fluid. I bought two one litre bottles of BMW brake fluid for about �7.30 each. Trolley jack and tools to remove each wheelīrake bleed kit (a tube with a non return valve) 11 mm open end spanner for front caliper bleed nipplesĩ mm open end spanner for rear caliper bleed nipplesĨ mm allen key to remove pollen filters and tray located beneath.
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