MAINTENANCE 4.7 WHEN NECESSARY 4.7.4 TRACK ROLLERS AND GUIDE WHEELS - REPLACE FLOATING SEALS Legend for illustration Z 21768 (1) Guide wheel, if leakage occurs. replace floating seal. Refer to repair manual for replacement procedure. (2) Carrier roller, if leakage occurs. replace floating seal. Refer to repair manual for replacement procedure. (3) Track roller, if leakage occurs. replace floating seal. Refer to repair manual for replacement procedure. 315