Forum Discussion
MEXICOWANDERER
Sep 29, 2015Explorer
Professional Way to tell if a stain is oil or grease on a friction surface:
Clean area thoroughly meaning adjacent oil and grease.
Use gloves and goggles
Play a propane torch a across the stain. The lining can withstand an incredible amount of heat.
If it is oil or grease the stain will turn liquid wet and can be wiped off with a rag. Then more liquid appears and more wiping and more and more.
Stop. It is a waste of time as is using brake cleaner. If the oil seems never-ending change the shoes.
If you are lucky a few wipes and no more grease/oil. Don't get carried away with the torch flame. 200-300 F is all it takes. This is a big-rig shop trick and I have used it countless times.
RV shop work quality is scumbag IMHO. Get your drums turned professionally and get the linings "arced" so they wear into and mate with the drum. I use DRI SLIDE to lube brake hardware which must be spotless before reassembly. Dry lube also works wonders on conventional brake hardware surfaces. I used half a can when I did Quicksilver's S Cam air brakes. Does not attract dirt or lining dust.
Hope This Helps
Clean area thoroughly meaning adjacent oil and grease.
Use gloves and goggles
Play a propane torch a across the stain. The lining can withstand an incredible amount of heat.
If it is oil or grease the stain will turn liquid wet and can be wiped off with a rag. Then more liquid appears and more wiping and more and more.
Stop. It is a waste of time as is using brake cleaner. If the oil seems never-ending change the shoes.
If you are lucky a few wipes and no more grease/oil. Don't get carried away with the torch flame. 200-300 F is all it takes. This is a big-rig shop trick and I have used it countless times.
RV shop work quality is scumbag IMHO. Get your drums turned professionally and get the linings "arced" so they wear into and mate with the drum. I use DRI SLIDE to lube brake hardware which must be spotless before reassembly. Dry lube also works wonders on conventional brake hardware surfaces. I used half a can when I did Quicksilver's S Cam air brakes. Does not attract dirt or lining dust.
Hope This Helps
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