Brother 1240 Service Manual page 87

NOTE:
When replacing/re-assembling the main motor, remove the old grease and apply a suitable
amount of grease referring to the figure below;
(7) Remove the development joint complete with the joint spring, then remove the link.
Development joint
Link
CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY
Main motor ASSY
Grease: Molykote PG-662
(1 rice-grain size)
Fig. 4-29
Joint spring
Fig. 4-30
4-17