Floating calliper guide pins - practical repair tips

The following must be observed during all repair or maintenance work on the floating-type calliper:

• Check guide bolts for ease of movement, contamination or damage
• Check dust protection sleeves or damping sleeves for damage.
• It should be possible to easily move the guide bolts back and forth in the brake calliper carrier ( Figure 1 ).
• Contaminated components should be cleaned before re-use and replaced if necessary

However, damaged components must always be replaced.
Depending on the vehicle model and brake calliper type, various repair kits are on offer ( Figure 2 ).

Before inserting the internal guide bolts, the sliding surfaces are to be coated thinly with a suitable silicone-based lubricant ( Figure 3 ).

Unsuitable lubricants can lead to swelling of the rubber parts and subsequent faults on the wheel brake ( Figure 4 ).

Before the brake is reassembled, the brake piston and the dust protection sleeve should also be checked for correct functioning and for any damage and replaced if necessary. Improper maintenance or repair work can lead to unpleasant complaints or cost-intensive consequential damage.