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Adjustment:
The vertical position of the motor pulley can be
adjusted when the operating lever is in position
neutral (center position). The dividing rib on the mo-
tor pulley should lie 0.5 mm (20 mil) below an imagi-
nary line drawn between the bottom of the belt
grooves on the friction discs.
4.6 DRIVE BELT (213997)
The drive belt is crossed, so as to run in the upper
track at the front side of the motor pulley and in the
lower track at the rear side. The belt crossing should
lie between supply turntable and motor pulley.
4.7 TRANSFER WEEL (990233)
The transfer wheel is attached to the mounting arm
990206 and serves as the speed transfer medium be-
tween motor pulley and flywheel. The spring 209306
provides the required pressure against these two
wheels. See fig. 4.26.
Adjustment:
Set speed selector to position 17/8 ips. Loosen screws
M116, and adjust speed selector bracket 209816 for a
clearance of 1 mm (40 mil) between the mounting
arm and lower mounting plate. Ensure that the
mounting arm is parallel with lower mounting plate.
The clearance between the transfer wheel and the
33/4 ips track on the motor pulley should be approx.
0.5 mm (20 mil). If necessary, adjust vertical position
of the transfer wheel by adding or removing turbax
washers in upper or lower flywheel bearing respec-
tively. Set the speed selector to 33/4 ips. The full width
of the transfer wheel should engage with motor
pulley and flywheel.
4.8 LIFTING ARM (990201), SERIES 14
The lifting arm (consisting of parallel arm and adjust-
ment arm) is located on lower mounting plate and is
linked with the eccentric segment 990203. See fig.
4.26. The lifting arm disengages the transfer wheel
990233 from the motor pulley when the operating
lever is set to position fast forward winding, reverse
winding, free or neutral. The transfer wheel should
engage with the motor pulley in normal forward drive
mode only.
Adjustment:
For each one of the tape speeds the transfer wheel
should leave the motor pulley as soon as the operat-
ing lever is moved from normal forward drive posi-
tion to neutral position and reach maximum clear-
ance before the motor is switched off by the micro-
swith 202151. The minimum clearance in position
neutral should be 3 mm ((1/8"). If necessary, adjust
by bending the lifting arm fingers x and y for the
relevant speeds. Set the speed selector for 17/8 ips
and the operating lever to neutral position. Loosen
screw C and adjust parallel arm 990204 for 0.5 mm
(20 mil) clearance between transfer wheel and fly-
wheel. Set the speed selector for 33/4 ips and check
that the clearance is the same. Readjust if necessary,
tighten and seal screw C.
If the lifting arm 990202 in Series 14 has been re-
placed, see chapter 4.9.
4.9 LIFTING ARM (990201), SERIES 15
Adjustment:
Produced as in 4.8, and adjust also for 71/2 ips. After
adjustment recheck clearance also for 71/2 ips.
The lifting arm 990201 in Series 14 has two fingers,
x and y, whereas the one in Series 15 has three, x, y
and z. For convenience, the double-split arm only is
stocked as service part, because it can be used for
replacement in Series 14 and 15.
17
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