Lotus Elise S1 Service Notes page 326

I Lotus Service Notes
Section JH
apart, and in so doing, apply an axial force to the piston via a screwthread and nut. The nut is restrained in the
piston by a one way clutch which grips the nut when the parking brake is applied, but allows it to turn when the
mechanism relaxes, or when the piston is operated hydraulically by the footbrake. In this way, the mechanical
mechanism is adjusted automatically to compensate for pad wear.
Needle roller
thrust bearing
spring bolt in ramps
ni26i
For the auto adjustment system to function correctly, it is essential that each caliper parking brake
lever is allowed to return fully when the brake is released, and is not prevented from doing so by
maladjustment of the parking brake cable. To check that the caliper levers are fully returned; with the
parking brake 'off', measure the distance between the cable abutment and caliper lever as shown.
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