Hydraulic Unit; Hydraulic Unit Removal - IBM 1403 Reference Manual

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Figure 8. Ribbon Drive Unit
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Hydraulic Unit
Blower
Figure 9. Hydraulic Unit
Hydraulic Unit
Hydraulic Unit Removal (Figure 9)
1. Remove the 1403 covers.
a. Remove the front cover.
b. Remove the rear cover.
c. Remove the top cover.
d. Remove the right cover.
e. Remove the front inner cover.
2. Clear the rear forms stacker area.
a. Slide the rear forms guide down.
b. Unfasten the negator spring from the rear forms
guide.
c. Slide the negator spring all the way up.
3. Remove the gear guards.
a. Remove the guard over the emitter.
b. Remove the guard over the hydraulic drive belt.
c. Remove the guard over the stacker gears.
4. Remove the emitter.
a. Move the translator frame to the left.
b. Loosen the set screws that can be reached in the
emitter collar.
c. Pull down sharply on the hydraulic unit drive belt
to turn the emitter.
d. Loosen the remaining set screws in the emitter.
e. Remove the emitter collar.
f. Remove the emitter.
5. Remove the emitter brush block arm.
a. Remove the arm spring.
b. Remove the holding screw.
c. Remove the retainer screw, retainer spring, and
spring block.
d. Remove the emitter brush block arm.
e. Remove the emitter brush block arm pivot collar.
6. Prepare to remove hydraulic unit.
a. Remove the sense amplifier mounting plate.
b. Remove the blower.
c. Drain the oil from the reservoir.
d. Remove the carriage tape tension idler mounting
plate.
e. Remove the screws from the rear heat sink resistor
panel.
26 REMOVALS AND ADJUSTMENTS
27