Notice When Replacing The Fixing Gears - Canon imagePRESS C850 Series Troubleshooting Manual

Notice when replacing the fixing gears.

[Detail]
When grease applied on fixing belt unit was deteriorated or the applied amount was insufficient, gears may wear out. Therefore,
follow the instructions below carefully when replacing the fixing belt unit with a new one.
[Service work]
Prepare the following gears, new type of E-ring (XD9-0136-000) and grease SE1107 (FY9-6036-000). Follow the steps below to
replace them with new ones.
- 31T GEAR (FL1-0579-000) 1pc
- 37T/42T GEAR (FU9-0977-000) 1pc1
[Reference] Switch to the new type 31T gear (FL1-0579-000) which is integrated with the bearing and strengthened.
In addition, check the status of 27T gear, which is the counterpart of 31T gear, located inside the fixing drive unit. If any damage
was observed on its teeth, replace the 27T gear to new one at the same time.
- 27T GEAR (FL1-1282-000) 1pc
a) Replacement of 31T gear and 37T/42T gear in the fixing belt unit
1) Remove the fixing belt unit referring the Service Manual.
2) Remove one screw [1] to detach the cover [2].
3) Remove one E-ring [2] and two screws [1] to detach the support plate [3].
[Note] Pay attention not to lose the bearing attached to the support plate. This bearing shall be reused.
4) Apply grease on entire circumference of the prepared 31T gear and 37T/42T gear, before replacing the 31T gear [1] and 37T/
42T gear [2]. Apply 1.3g grease [a] for each gear.
[Reference]
• The 2 bearings attached to the old type 31T gear whose color is black will be redundant after the replacement.
• The new type 31T gear (FL1-0579-000) [2] is brass colored and integrated with the bearings.
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