Evening all,
I thought while I had my front brake cable off I'd have a look at the drum, shoes etc. Please see attached photo's.
Please remember I'm a novice. Looking at the drum etc, it appears a bit dry and mucky, and I guess it could do with a bit of a clean up, grease, etc. Seems to me I should:
- take it to pieces
- brush out dust (wearing mask)
- clean off grime from plate etc with a degreaser
- lightly grease the cam and pivot, and their spindles
- lightly oil or grease the springs
Please could you tell me:
1. Is the above correct?
2. The nut holding the arm is hard to undo. Is that usual and any advice on how to undo it?
3. How do I take off, and put back, the springs? (or don't I?)
4. Any other tips?
Thanks very much as usual. Phil.
Phil
Those shoes are incorrectly assembled. The metal pads go at the pivot end. You need to rectify this as a matter of safety.
Photo is A10 front shows the correct position of the shoes and linings.
To get the nut undone put the plate with shoes on back in the drum. Apply the brake and undo the nut on the pivot then undo the nut on the lever, the shoes will lock the cam as you turn the nut. The lever can be quite tight on the square of the cam.
So the shoes are on the wrong way round?
I have now got the nut off the arm spindle, thanks. But nothing else has moved. I assume the arm spindle should tap through, and the arm fall loose?
Phil.
The lever is often very tight on the squared end of the cam. Sometimes you can jiggle it off. Some owners have applied a hammer direct to the formed end of the cam and flattened or partially flattened it. You see a lot of cams like that. I screw a domed nut on, leaving a few threads visible and tap the dome with a copper hammer. Before you pull the cam throungh check the edged of the square, they sometimes sharp raised a bit above the diameter of the spindle and need dressing to pass through the hole without scratching.
Still having trouble getting it off. Gave it some WD40 and tried hitting it with a hammer and aluminium drift , hitting the grease nipple end to try to knock it through, but no luck. In fact I think I only succeeded in distorting the grease nipple. Now I'm going to try my heat gun (don't have a torch) - might just make enough difference? I thought I might have to saw it off, putting a hacksaw blade between the arm and the casting (I have a slight gap there) but I checked first with Draganfly to see if there are any spare cam spindles, and they don't have any, and don't know where there are any, so I need to get this one out. Will let you know if the heat gun works. Thanks for your help so far. Phil.
Not sure whether it was the heat gun or a slightly heavier knock with the hammer, or maybe both, but anyway it came out. Shame about the grease hole, a bit distorted.
Re springs (see photo), what's best to do with them? Lightly oil?
Phil.
I would just brush them off with a wire brush.No grease or oil.
A domed nut will cover the distorted grease hole.
Okay, thanks. Here is a photo of the grease nipple end of the spindle. Phil.