Service manual

GV 30…, GV 50… Drive Mechanism
GRUNDIG Service 5 - 27
k
8.12 Pinch Roller and Load Lever Driving System
– Unhook the pinch roller spring (7010C) and remove the pinch roller
lever (7010A, Fig. 8.29).
– Undo the screw (Pos. 70410), disengage the two clamps S and
remove the cassette lid opener (70400, Fig. 8.29).
– Disengage the clamp R of the cassette lid opener (70400) and
remove the pinch roller control lever (7010B, Fig. 8.29).
– Pull off the pinch roller cam gear (70300, Fig. 8.29).
– Remove the retaining washer (50710), remove the load lever
(Pos. 50700) and the load lever spring (50800, Fig. 8.29).
– Slide the pinch roller rack gear (70200) fully backwards and remove
it (Fig. 8.29).
Assembly notes:
– Insert one end of the load lever spring (50800) into hole
T of the mechanism chassis and hook the other end to
the load lever (50700) as shown in Fig. 8.30.
– After fitting the control slide (70200) push this in direc-
tion of the arrow to its end stop (Fig. 8.29).
– Position the cam gear of the pinch roller (70300) and the
relay gear of the pinch roller (70600) as shown in
Fig. 8.31.
– Tighten the screw (70410) with a torque of 5.0 to
6.0kg/cm.
Notes on lubricating the pinch roller and load lever driving
system
– Always use the grease with part number 75988 061 7800 for lubri-
cating the mechanical parts of the threading roller units and follow
the lubrication instructions given in Fig. 8.32 – Fig. 8.35!
7010C
7010A
70400 Cass. lid
opener
7010B Control lever,
pinch roller
70410
70300 Cam gear,
pinch roller
50710
50700
Load lever
50800
70200
Rack gear,
pinch roller
S
R
S
Fig. 8.29
50800
50700 Load lever
T
Fig. 8.30
70300 Cam gear, pinch roller
70600
Relay gear,
pinch roller
Align the position
of the mark
Fig. 8.31
70200 Rack gear, pinch roller
Apply grease
(75988 061 7800)
Fig. 8.32
70300
Apply grease
(75988 061 7800)
to the side
Fig. 8.33
70400 Cassette lid opener
Apply grease
(75988 061 7800)
Fig. 8.34