Common problem with the FJ front brake calipers is them seizing. The cause is down to corrision behind the seals which make the seal grip the brake piston so causing seizing.
The pistons should be easily be pushed in with finger pressure, if you find this is not the case then the answer is to strip the caliper down. You must replace seals if the caliper is dismantled.
This is a set of 4 wiper seals and 4 pressure seals, caliper seals (For when you split caliper) hose copper washers, bleed nipple and cover and a satchet of rubber grease. This does one caliper (recommend you order two sets (see listing) and do both calipers) .
TIP; When replacing seals use the brake pressure to push the pistons out as far as you can on all pistons before disconnecting fron the brake line. This will make it easier to blow the pistons out the last few mm's.
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