Printronix p300 Maintenance Manual page 235

5–24. Shuttle Assembly
b. Installation, P600
4. Using two wrenches, partially tighten screws (10) and (15) on left side.
5. Repeat step 4 for right side screws (13) and (15).
6. Alternate between steps 4 and 5 until both sides are evenly tightened and shuttle is fully seated.
7. Connect four hammer connectors (10). Make sure that connectors align properly such that male
pins do not show at either side.
8. Loosen two screws (10) and put comb bracket (11) back in place. Tighten screws (10). With comb
bracket installed, verify that there is enough clearance between wires and top of shuttle to pass a
pencil through the gap. If not, increase wire flex loop.
Torquing to incorrect value or without operating shuttle will damage bear-
ings.
9. Torque bearing block screws.
(a) Operate shuttle continuously by loading paper, reconnecting ac power, setting POWER
to ON, and cycling ON LINE switch on and off.
(b) Torque screws (14) to 36 in–lbs for machined bearing blocks; torque screw (14) to 8–10
in–lbs for die cast blocks. (The warning label on the shuttle frame will indicate the correct
torque.)
10. Tighten cam cover plate screws. Install cam cover (5) with attached gasket (6) on housing (7).
Tighten two captive screws (2).
11. Install hammer bank cover assembly and check platen gap (adjust if necessary) per paragraph
5–10.
12. Place ribbon drive in operating position per paragraph 3–4c, step 9.
13. Replace cover per paragraph 5–18b.
P300/P600 Corrective Maintenance
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–continued
CAUTION
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5–53