Brother HL-2600CN Service Manual page 284

23) Remove the E rings (1 pc.) to remove the (gear A) from the fusing unit.
24) Remove the E rings (1 pc.) to remove the (gear B) from the fusing unit.
25) Remove the E rings (1 pc.) to remove the (gear C) from the fusing unit.
26) Remove the E rings (1 pc.) to remove the (gear D) from the fusing unit.
27) Remove the E ring (1 pc.) to remove the (shaft).
E ring (gear C)
N
Do not touch the surface of the heater lamp with your hands, the small traces of oil
you leave on the lamp will affect the life of the lamp.
N
The wattage of the heater lamp is different between the fuser roller and the back-up
roller. The wattage is marked on the insulator of the lamp electrode.
Fuser roller:
Back-up roller :
Note:
When installing the new fusing unit into the printer, you have to wait approximately for 30
minutes after the unit is installed to allow the fusing oil to circulate in the unit.
E ring
(gear A)
E ring
Fig.7-103
PRECAUTION 
560W
420W
VII-72
(gear B)
E ring
(shaft)
(gear D)
E ring