MBW MM90 - Manual (Page 12)

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Belt Guides
Belt driven models are equipped with guides to ensure prop-
er operation. If the paddles do not stop when in the “IDLE”
position, follow these steps to adjust them.
1. With engine stopped, move the engagement lever to
the “MIX” position.
2. Loosen the nuts on the 3-1/4” long bolt (Figure 1, #1)
below the drive belts. Move the bolt to within 1/16” of
the belts and retighten the nuts.
3. Loosen nut on the 3/4” long bolt (Figure 1, #2) located
in the slot on the idler arm.
4. Move engagement handle to “IDLE” position and
start engine.
5. Move engagement handle towards “MIX” position un-
til belts stop moving.
6. Slide 3/4” bolt and nut until they contact the edge of
the frame and tighten.
Greasing Wheel Bearings
1. Jack the rear end of the mixer and support by side
rails so that mixer is stable.
2. Remove the wheel.
3. Remove the dust cover.
4. Remove the cotter pin from the spindle nut.
5. Unscrew the spindle nut.
6. Remove the hub from the spindle, being careful not
to allow the outer bearing cone to fall out. The inner
bearing cone will be retained by the seal.
7. Remove the grease seal.
8. Wash all grease and oil from the bearing cones and
inspect each roller. If any pitting, spalling, or
corrosion is present, then the bearing cup and cone
must be replaced.
9. Pack the entire bearing with grease, apply a light coat
of grease to the bearing cup, and install.
10. Tap a new grease seal into place with a clean block.
11. Slide the hub onto the spindle.
12. While rotating the hub slowly, tighten the spindle nut
to approximately 50 lb-ft.
13. Loosen the spindle nut, but DO NOT rotate the hub.
14. Finger tighten the spindle nut until snug.
15. Back the spindle nut out slightly until the first
castellation lines up with the cotter pin hole and insert
the cotter pin.
16. Bend over the cotter pin legs to secure the nut.
17. Tap the dust cover into the hub.
18. Install wheel and torque lug nuts to 90 lb-ft.
GREASE DAILY
OIL WEEKLY
2
1
FIGURE 1