CUTTING UNITS
673831-Rev A 8-37
8
4. Using a suitable press, install new outer seal (5) with
the lip facing the inside.
5. Install lock nut (6). Do not tighten lock nut.
6. Press one bearing (4) onto the other end of roller
shaft (1) and install wear sleeve (7).
7. Using a suitable press, install new outer seal (5) with
the lip facing the inside.
8. Install lock nut (6). Do not tighten lock nut.
9. Evenly tighten lock nuts (6) to 10–30 lb-ft (13.6–40.7
N·m) to set the bearings.
10. Lubricate grease fittings (3) with grease that meets or
exceeds NLGI Grade 2 LB specifications. Clean
grease fittings before lubricating and apply grease to
the fittings with a hand grease gun only. Pump the
gun slowly until a slight amount of pressure is felt,
then stop—do not overgrease. Do not use
compressed air gun.
11. Loosen one lock nut and tighten the same lock nut to
obtain 3–7 lb-in. (0.3–0.8 N·m) of rotational torque
resistance on roller shaft with no end play.
Rear Roller
Removal and Installation
See Figure 8-34.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Raise cutting unit assembly with a suitable lifting
device and support the cutting unit frame to remove
weight from roller.
Figure 8-34
3. Remove two screws (2), two lock nuts (3), and
scraper (1).
4. Remove screw with grease fitting (4) on each side of
rear roller (5).
5. Remove rear roller (5).
Installation Notes
• Install rear roller by reversing the order of removal.
• Tighten screws (4) to 16–24 lb-ft (21.7–32.5 N·m).
• Lubricate grease fittings with grease that meets or
exceeds NLGI Grade 2 LB specifications. Clean
grease fittings before lubricating and apply grease to
the fittings with a hand grease gun only. Pump the
gun slowly until a slight amount of pressure is felt,
then stop—do not overgrease. Do not use an
air-powered grease gun.
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