Monday 30 August 2021

E46 318i Touring: Handbrake / parking-brake repair + adjustment

The handbrake (e-brake) wasn't working properly on the left side of the E46 Touring, which I assumed would either just need adjusting or at worst the spring mechanism had failed. BMWs of this era have a drum-brake mounted inside the hub of the disc-brake that is used only for the parking-brake. It turned out that the sprung stud that holds the lower brake-shoe in place had come loose, worked its way round the drum and partially jammed the mechanism, as in top picture.

The slot that the stud locks in to is part of the backing plate for the disc and it had bent outward and rounded off over time, no longer giving enough metal for the stud to hold on to. I managed to build the slot back up using a cole-chisel and there is just about enough metal left to hold the stud firmly. If it happens again in the near future then a new backing plate may be required, but this is a hub off job and a whole load more work, so lets hope it doesn't. 

Annoyingly, I had to crack open a new £13 handbrake spring assembly kit just to use the one sprung retaining stud, guess I have some spares at least. With the left side now working correctly, I gave both sides of the handbrake a quick tighten up using the rotating adjuster inside the drum.

BMW E30 - LED instrument lights flicker with rheostat switch

Work fine wired straight to power, but flicker and come on and off when run through the dimmable rheostat switch. Switching back to 5w bulbs may be the only cure.

Sunday 29 August 2021

E30 318i M40b18: High / erratic idle issues NOW FIXED, stable at 800rpm + good throttle-response finally

After my cutting out when cold problem and no low-end throttle response from a busted lower inlet-manifold gasket (THIS POST) and high / pulsing idle issue from a poorly set throttle-stop screw (THIS POST), I have finally got the old E30 ticking over properly. It now sits at about 800rpm on idle and throttle response is smooth across the range. Pleasant.