31
MAINTENANCE SECTION
17. Install the square drive sleeves (18) (19) with the small hub end leading. The small hub must
engage the recess in the drive plate assembly. Install the sleeve retaining rings (34) (33).
18. Insert the square drive (14) (17) into the housing through the drive sleeves (18) (19). Install the
square drive retaining knob (17) (18) in the end of the square drive and tighten.
19. Insert the roll pin (22) into the hole in the drive plate through the hole in the housing. Use a drift and
hammer to tap the pin into the plate making certain the pin does not protrude beyond either side of
the drive plate. Note: For TU-20 models, retract screws (22) are used in the place of the retract
pin. Use a hex wrench to install into the drive plate.
20. Place one end of the shroud (24) (24) on the housing and, using a hex wrench, thread the shroud
screws (25) (25) part way in.
21. Bend the shroud around the housing and install the remaining screws, going back and tightening
the screws from the previous step.
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