Brother HL-3040CN Service Manual page 258

(2) Remove the Z spring R from the Holder of the Sub frame ASSY.
(3) Remove the Z spring L and R from the other three Holders with the aforementioned
procedures (1) and (2).
Holder
Assembling Note:
When mounting the Z spring R, make sure to assemble them as shown in the figure below.
Holder
Holder
Z spring R
Fig. 5-90
Hook
Fig. 5-91
5-84
Sub frame ASSY
Z spring R
Hook
Z spring R
Confidential