Lotus 2004 Eleven Service Notes page 104

Lotus Service Notes
CI.5 - FRONT WHEEL BEARINGS
The sealed front wheel bearings are contained in a steel housing secured to the hub carrier with three
'Torx' bolts. The double row, angular contact, ball bearing is retained in the outer housing and also onto the
hub spigot by a shoulder and a peening operation, and is inseparable for service. Note that all four hub as-
semblies are common, and incorporate a wheel speed sensor in the bearing unit, with a flying lead terminating
in an electrical connector plug secured by a camber shim plate bracket.
If there is found to be any discernible free play in the hub bearing, or any roughness or tight spots can be
felt, or any signs of lubricant expulsion are evident, the hub assembly should be replaced - there is no provi-
sion for adjustment.
To Replace Hub Bearing Assembly
1. With the wheel removed, release the two fixing bolts, and remove the brake calliper from the hub carrier.
Support clear of the brake disc without straining the flexible hose. Release the single countersunk screw
and withdraw the brake disc from the hub.
2. Using a Torx socket, release the three bolts securing the hub bearing unit to the hub carrier.
3. Fit the new hub bearing unit to the hub carrier and retain with the three Torx bolts. Torque tighten to 90
Nm.
4. Refit the brake disc and calliper, using Permabond A130 (A912E7033) to the threads of the calliper fixing
bolts and torque tightening to 45 Nm. Pump the brake pedal to reposition the pads before driving the
car.
Hub Hub
Double row ball bearing Double row ball bearing
Hub carrier Hub carrier
Swaged bearing retention Swaged bearing retention
Section CI
Steering arm Steering arm
Hub to carrier fixing bolt Hub to carrier fixing bolt
Page 11
c41a c41a