Dell 2135cn Service Manual page 677

Chapter 3 Removal and Replacement Procedures (RRPs)
3) Mate the holes of the SPRING ROS
with the bosses of the printer, secure it
with the four screws (silver, tap, 8mm).
4) Engage the two connectors (P/J40, 41)
with the PWBA MCU, fix the harness using
the EDGING SADDLE.
Go to the next replacement step:
Replacement 21 PLATE ASSY DUCT (PL10.6.1)
3 - 175
Version 
2008.02.01