4.3 Repairing the ISO cylinder DSBC-… / A3 4.3.1 Requirements Preparatory work has been completed ( Chapter 4.1 on page 26 ). Visual inspection has been performed ( Chapter 4.2 on page 26 ). 4.3.2 Validity This chapter applies to the repair of the following versions of the ISO cylinder: DSBC-… ( standard version; without the following features: L / U / L1 / T1 / T3 / T4 / A1 / A2 / A6) DSBC-…- A3 The different versions and features of the ISO cylinder are explained in Chapter 2.3 on page 11 . ISO cylinder with clamping unit (DSBC-…-C) In addition to the repair described here, also follow and carry out the additional repair steps : Chapter 4.4 on page 32 .
Standard cylinder with end-position locking (DSBC-…-E1 / E2 / E3) In addition to the repair described here, also follow and carry out the additional repair steps : Chapter 4.5 on page 35 . The following repair steps describe and show the ISO cylinder with single-ended piston rod. Differences in the ISO cylinder with through piston rod (DSBC-…-T) : Take into consideration the following for the repair steps: Note the differences shown in the components list ( Chapter 3.1 on page 14 ). Instead of threaded coupling: Rear piston rod Instead of end cap: Rear bearing cap Also replace the scraper ring in the rear bearing cap.
4.3.3 Structure of the bearing cap The bearing and end caps of the various sizes and versions differ and can differ from the illustrations shown in the following. Before each repair, the parts lists of the online spare parts catalogue on the Festo website must be used to determine the precise type of bearing and end cap and must be taken into consideration in the repair ( www.festo.com/spareparts ). 1 1 Bearing cap 2 2 Holding disc (only DSBC-32 … 63) 3 Buffer seal (only DSBC-…-PPV / PPS) 3 4 O-ring 4 5 Scraper ring 6 Bearing (plastic). In version DSBC-…-Q / E1 / E2 / E3 / EX4: Bearing (metal). 6 5 Illustrated: DSBC-32-… (Standard version) 27 / 56 Festo 7DSBCb_en