Hammer Spring - Printronix P9012 Maintenance Manual

Hammer Spring

Removal
1. Remove the ribbon deck assembly as described on page 6–8.
2. Place the hammer bank assembly in the service position, as follows:
a. Set the forms thickness adjustment lever (1) to fully open.
b. Remove the velcro pad (2) holding the wires.
c. Disconnect the coil connectors (3).
d. Remove four screws (4), eight washers (23, 24), and two coil lead
e. Remove two screws (6), lockwashers (7), and washers (8).
f.
g. Separate the shroud from the shuttle assembly (12).
Be careful to prevent shims and the antirotation block from falling into
the printer.
h. Remove two screws (13). Separate the antirotation block (14) and
i.
Do not loosen the bearing block set screws (25).
j.
6–22
(Figure 6–8)
brackets (5).
Remove two screws (9) and washers (10) from the shroud (11).
shims (15) from the shuttle assembly by applying force to compress
the spring on the side and lifting up.
Rotate the hammer bank (16) as far as it will go toward the front of
the printer.
Pull the hammer bank cover (17) away from the magnets on the
hammer bank. Then, disengage the cover from the holding pins (18)
and remove it from the printer.
CAUTION
CAUTION
Replacement Procedures