duncan-uk Posted August 23, 2022 Share Posted August 23, 2022 Pictures have gone awol but i do have a pdf if you PM me 1. You will need the following tools 22mm Impact Socket 13mm Impact socket Compressor and impact gun (preferably) Hammer and cold chisel Centre Punch Breaker bar Blowlamp Trolley jack and some tall axle stands A pry bar or similar. Puller When you jack up the car, I suggest you put the front stands under the chassis legs and the rear stands on the sills or rear jacking points. If you're worried about your tender underside, use some 4x2 on top of the axle stands to spread the load. Don't put the stands under the rear beam, as you need to be able to drop the beam down to remove and refit the bushes Step one: loosen the two 13mm bolts on the dog bone, using impact gun or ratchet. Step two: Loosen the 22mm nut on the bottom of the beam mount, using impact gun or breaker bar. Step 3: Lift the rear seat Step 4: with the beam bush nut still in place, but loosened, hit it upwards with a big hammer! Step 5: When you cannot move the bolt any further up through the bush, remove the nut and strike the bolt with a centre punch and hammer until it is free of the bush. Remove bolt (under back seat) Step 6: Using the hammer and cold chisel, knock the bottom of the bush lip inwards on opposite sides so the puller can seat on the beam mount carrier. Step 7: Assemble your puller, you may need to lever the beam downwards slightly using a bar to gain access to the top of the bush Step 8: begin winding the puller, when the outer rubber of the bush has moved slightly away from the bottom edge of the beam mount carrier stop. Step 9: Now heat the metal outer with a blowlamp. I strongly suggest you cover your arms hands and face for this as the rubber can (and did) spit and molten rubber on your skin isn't very nice! Heat for 2-3 mins (approx) to soften the rubber. Step 10: Working quickly, start winding the puller until the bush is about halfway out of the metal carrier, then stop and re-heat with blowlamp. (As above) Step 11: You should then be able to wind the bush all the way out no problem. Step 12: with the bush removed, you need to clean the debris from the inside of the metal outer. We used an electric power file but a wire brush in an electric drill would suffice or good old sand paper Take your time and get it as clean as you can, removal of the old rubber and any corroded bits will make fitting the new on 100% easier Step 13: Now you're ready to fit the new bushes, lube the bush slightly with the BM technician’s lubricant of choice, fairy liquid. Step 14: you'll need to change the set up of your puller, for this use a piece of the threaded bar with the 67mm ring on the top of the bush mount, the flat bar on top and a nut, again you may need to pry the beam down a little to get access. Ensuring the assembly of your puller is 100% square on the top and the bush is lined up straight and the groove in the bush is lined up with the knobbles in the carrier. You can get it started by hand. Put another piece of bar on the bottom of your threaded rod and another nut. Wind the nut on the bottom of your threaded rod to push the bush into the carrier. If it starts to go off square stop, back it off and start again Step 15: Once the bush is full home in the mount, drop the bolt back in from under the back seat, you may need to wiggle the beam to get it to drop in. Step 16: Once the bolt is in place, using a trolley jack, jack the beam up into position and re-attach the dog bone to the beam mount with the 22mm nut using a breaker bar Step 16: Re-attach the two 13mm bolts at the other end using a ratchet. subframe beam mount fitting.pdf 1 Quote Link to comment Share on other sites More sharing options...
Undernutter Posted September 12, 2022 Share Posted September 12, 2022 (edited) To complement this, Here's my guide on the easy way to remove the rear subframe bolts, as they are normally stuck absolutely fast and don't respond to hammering. New bolts are chump-change from BMW, the part number is 33323628167. Essentially: Centre-punch; Pilot Drill; Drill 8.5mm; Tap M10 (Use plenty of cutting oil, turn only 1/4 turn at a time before reversing tap to break swarf, repeat...); Assemble puller and spacer as shown. Apply heat/penetrating oil to bolt, then start turning. Edited September 12, 2022 by Undernutter 1 Quote Link to comment Share on other sites More sharing options...
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