IBM System/34 Maintenance Manual page 140

Drive Belt Tensioner
1.
2.
3.
~.
Set Power to 0 (operator panel).
Lift the motor against the belt tensioner spring
a.
When the pin
CD
in the shaft
0
is free of the
opening
a,
turn the shaft
90
degrees to hold the
spring, and lower the motor.
Check for no gap at
O.
Adjust the belt tensioner if necessary.
a. With the pin in the shaft holding the belt
tensioner spring, (step 2 above), loosen the two
screws
O.
b. Locate the belt tensioner with no gap at
0
and
tighten the two screws
O.
c. Lift the motor against the belt tensioner spring
a,
turn the shaft
0
90
degrees to place the
pin
CD
in the opening
a,
and lower the motor.
Note: The belt tensioner bracket
0
must overlap
the motor bracket
G
as shown.
eo
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