Servicing Of Solenoids; Servicing Of Push Button Assembly; Removal Of Capstan Assembly - Revox G36 Service Manual

once their supply of lubricant has been used up. Felt linings are to be saturated with
Teresso 43 (Esso).
If signs of wear become visible on the capstan shaft, the whole bearing plate complete
with shaft should be replaced (see sect 2.3). Lubrication of the capstan bearings is not
anticipated. However, where this can not be avoided, Teresso 43 (Esso) only must be
used.

2.2.3 Servicing of solenoids

When it appears that a solenoid is tending to stick or function erratically, it should be
dismantled and the slug and housing thoroughly cleaned with methylated spirits.
When both parts are properly clean and dry, molybdenum grease may be rubbed into
the working surfaces, which must finally be wiped dry before re-assembly.

2.2.4 Servicing of push button assembly

Conventional switch cleaners are not recommended for the high current spring
contacts used in the REVOX, and where cleaning is necessary, the contacts should be
polished clean. The interlocking bars and push-button shafts may require occasional
greasing with molybdenum grease. Where a part of the assembly needs replacement,
unscrew the four fixing screws, bend the pushbuttons to the right and ease the unit to
a better working position. For better access to the switch assembly, the housing of the
pinch roller solenoid should be removed by undoing the M 4 nuts (pos. 12 in fig. 6).

2.3 Removal of capstan assembly

This may become necessary where the recorder is to be used on a mains frequency
which differs from that for which the recorder was manufactured, or when replacing
the capstan assembly becomes necessary.
Having removed the chassis, as described in sect. 2.1. from the cabinet and the
loudspeaker and panel, separate upper and lower chassis sections by undoing screws
no 16 shown in fig. 6. Lift upper chassis without exerting excessive force, if necessary
loosen the fixing screws of the selector switches (18 in fig. 6) to gain more freedom of
movement.
Unscrew the capstan mounting nuts (19 in fig. 6) and remove the assembly
downwards and forwards out of the chassis. The fixing screws 20 in fig. 7 on the
flexible coupling are to be removed through the large holes in the capstan bearing
plate. The motor mounting screws (21 fig. 7) should now be removed using
REVOX's special 8 mm nut driver, after which the flywheel assembly can be
separated from the motor.