Clutch Operation - Ricoh M5 Service Manual

3. Clutch Operation

(Figure A)
Solenoid OFF
Loosen
Slider Drive Gear
— Forward –
Before the slider solenoid turns on, the clutch sleeve turns freely.
This allows the clutch spring to be loose (figure A). Since the clutch spring is loose, it does not touch
the hub of input gear.
The CPU energizes the slider solenoid to engage slider forward drive.
on, it pulls the forward pawl to engage with the ratchet ring.
ing the clutch spring to tighten around the hub of the input gear (figure B).
The input gear then starts turning gear C, which rotates the slider drive gear.
Very soon after the clutch spring tightens, the torque on the forward clutch sleeve becomes greater
than the friction between it and the ratchet ring.
After it starts turning, friction resistance keeps the spring tight.
ratchet ring.
During forward movement, power is provided to the slider as follows:
Gears A and B rotate freely while the slider is moving forward.
(Figure B)
. Solenoid ON
.- .
Tighten
/
Gear B
So, there is no forward drive.
Input Gear
/
The clutch sleeve stops turning, caus-
The clutch sleeve then starts turning within the
3 - 1 3
May, 25, 1985
Clutch Sleeve
/
/ Ratchet Ring
c
Slider
Slider Drive' Gear
When the slider solenoid turns