Chapter 99-13F-9-57The insulating bush may be of 2 different shapes: one for the iR3570/4570and the other for the iR2270/2870. If the machine is an iR2270/2870, be sureto pay attention to the direction of the protrusion of the insulating bush.F-9-589.5.3 Cleaning Roller9.5.3.1 Removing the inside delivery cover unit (old) 0007-7890iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N // iR4570N / iR2230 / / / iR3530 /The difference between new and old inside delivery cover unit:Old inside delivery cover unit does not have a grip ring [1] at hinge. In thiscase, detach the cover following the procedure below.F-9-591) Remove the screw [1] and the stepped screw [2], and detach the insidedelivery cover unit [3].F-9-60Note 1Point to note when removing the inside delivery cover unitRemove the inside delivery cover unit while supporting the guide [1] in thearrow direction A and opening it in the arrow direction B in the figure. Oth-erwise, the guide may come off the inside delivery cover unit.F-9-61Note 2Procedure for attaching the guidePerform the following steps if the guide has come off the inside delivery cov-er unit.1) Attach the torsion spring [2] to the duplexing support feeder mount [1]. Atthis time, hook the edge of the torsion spring on the area A of theduplexing support feeder mount.[1]