Right. I tried it. Forget that [brakes] entry in Aircraft.cfg. (Just to confirm that the Camel Aircraft.cfg doesn't have one & I can't find a [brakes] entry in the FS2002 defaults.)
Download
AirEd & use it to open the Camel AIR file. First change the 332 Brakes entry to TRUE as in my previous shot by clicking on it. Now scroll down to 1101 Primary Aerodynamics & open it up by clicking on the + sign. Find the Braking Strength entry. It's set to 0 zero. Change it to 22000.

Select the entry, type in the desired value & hit Enter. This was copied from the Cessna 182. You can tweak it later if you wish.
Save the AIR file & open Aircraft.cfg. Scroll down to the [contact_points] entries & change the brake map values like this. (
1 = left &
2 = right brake.)
[contact_points]
point.0=1, -9.0, 0.0, -2.2, 1181.1, 0, 0.519, 180.0, 0.304, 2.5, 0.695, 0.0, 0.0, 0.0, 0.0, 0.0
point.1=1, 2.0, -2.5, -4.5, 1574.8,
1, 0.519, 0.0, 0.304, 2.5, 0.686, 0.0, 0.0, 2.0, 0.0, 0.0
point.2=1, 2.0, 2.5, -4.5, 1574.8,
2, 0.519, 0.0, 0.304, 2.5, 0.682, 0.0, 0.0, 3.0, 0.0, 0.0
Exit Notepad saving changes & try it.
PS. Take backup copies of the AIR file & Aircraft.cfg before editing them in case you mess it up.