PDA

View Full Version : Cleaning up Handbrake components



kwd509
03-06-2011, 10:17 PM
Waiting for more favorable weather, I work around the edges, on things that can be done indoors on the long neglected 64 2a. The transmission brake linkages were frozen and so I removed and brought the assembly in for a cleaning. It is a small job and ready for reassembly and storage for later refitting. Clearly the hand brake handle assembly was painted, but there is a handbrake relay assembly lying between the handle and the brake itself. It includes a steel bracket that bolts to the frame and a small cast piece that connects linkage directly to the brake drum expander. These pieces look as if they never were painted. If so why not? I would think that would offer some corrosion protection( though the pieces have held up well). Any down side to painting them for future protection? Since multiple small items will get painted....

I noticed a recent post that postulated an unpainted transmission brake drum would dissipate heat mor eefficiently- though thatnraises a related question: how often is the e brake used such that heat dissipation would be a concern?

gudjeon
03-07-2011, 09:25 AM
I think painted vs. non painted drum is a case of splitting hairs. Yes, in theory an unpainted drum should dissipate heat better. In practise, I have never seen a brake failure because of it on its own. I painted my park brake drum with plain old cheap spray paint and it has no burned off yet in 5 years. The service brake, if painted, should receive high heat paint as these definitely warm up. :thumb-up:

I Leak Oil
03-07-2011, 01:16 PM
Something is wrong if your tranny brake drum is getting too warm....paint or no paint.

SafeAirOne
03-07-2011, 04:13 PM
My teenage son heated up the transmission brake on my 109 quite a bit once. :(

I Leak Oil
03-07-2011, 04:25 PM
My teenage son heated up the transmission brake on my 109 quite a bit once. :(

Like I said Mark, there's something wrong........with letting a teenager drive your rover!:D

jac04
03-07-2011, 04:34 PM
Strip & repaint everything while you have the time. Just make sure to mask the inside of the bellcrank and the outside of the pivot pin (unless you just get a new one like I did). I used 3M brake grease on everything at reassembly:
http://i79.photobucket.com/albums/j126/jac04/000_1296.jpg
http://i79.photobucket.com/albums/j126/jac04/000_1378.jpg
http://i79.photobucket.com/albums/j126/jac04/000_1381.jpg