Tennant 7400, Service Manual

Page: 53 / 322

SCRUBBING
3-17
7400 MM428 (12--98)
14. Use a press to install a new bearing on the
tapered shaft. The open face of the bearing
points in. Reinstall the retaining ring on the
tapered shaft next to the bearing.
15. Reinstall the tapered shaft and bearing in
the bearing housing on the inside of the
idler plate. Use green loctite #680 on the
outer diameter of the bearing before
pressing in place.
16. Reinstall the retaining ring on the flat end of
the tapered shaft on the outside of the idler
plate.
17. Reinstall the square key on the tapered
shaft. Put a small amount of grease on the
taper.
18. Reinstall the idler plugs, washers, and castle
nuts. Hold the plug from turning and tighten
the castle nut down hard until the slot in the
nut lines up with the hole in the shaft. Install
a new cotter pin.
19. Reinstall the brush arm and C clip if they
were removed earlier.
20. Reinstall the idler plate and side squeegee
assembly in the machine.
NOTE: Lift up on the brush wrap slightly when
installing the idler plate in the machine so the
attachment pins line up with the holes in the plate.
21. Align the two pins on the lift tube with the
two holes in the brush idler plate arm.
22. Reinstall the M12 hex screw in the brush
idler plate arm. Tighten to 64 -- 83 Nm
(47 -- 61 ft lb).
NOTE: Apply a small amount of grease to the
threads on the bolt and in the tube.
23. Reinstall the two hair pins in the brush wrap
attachment pins.
24. Reconnect the front of the leveling rod to the
ball stud.
25. Close the RH brush door and operate the
machine. Check the main brushes for proper
operation.