There are several factors that can erode parking brake performance. One of the most critical procedures during installation is the the routing of the parking brake cables. To ensure maximum performance from your parking brake system, the cables must be routed as straight as possible. Bends in the cable can significantly reduce efficiency and thus reduce pull force at the brake. Tight bends must be avoided with a minimum recommended bend radius of 6" to 8".
Cables should be properly restrained to prevent "straightening" of bends when tension is applied. Restrain movement of cable by affixing the cable sheath to body or chassis by fitting cable clamps at various points over the length of cable or by using original equipment cable attachments points. The clamping method chosen will require that cable sheath be held tightly without movement, crushing or causing interference to the internal cable.
Cables must be initially pre-stretched by multiple applications of the brake handle, then re-adjusted to correct tension.
Finally, if you inadvertantly drive with your parking brake on, you can glaze your shoes, which will affect their ability to hold. I hope this information is helpful.
Ken H
|