Caster Replacement; Disassemble - Yale 524150797 Maintenance Manual

Caster Wheels

CASTER REPLACEMENT

WARNING
Put blocks under both forks and on both sides of
the drive tire. The blocks must prevent the lift
truck from falling and causing personal injury or
property damage.
1. To remove the caster, park the lift truck on a
smooth and level surface. Turn the key switch to
the OFF position, and disconnect the battery.
2. Raise the drive wheel off the floor. Block the lift
truck. See the section
• Periodic Maintenance 8000YRM1510
for lift truck model A249
• Periodic Maintenance 8000YRM1666
for lift truck model A245
3. Remove the four screws, nuts, and washers re-
taining the caster to the frame. Remove the caster
wheel.
NOTE: The caster does not have to be removed from
the lift truck frame in order to replace the wheel or the
wheel axle. To replace the wheel or wheel axle, follow
these steps:
a. Remove the axle capscrew and adjuster from
one side of the caster. Drive the wheel axle/
adjuster out of the caster wheel and remove
the wheel from the caster frame. See Figure 4.
b. Align the caster wheel between the arms of the
caster frame and install the axle/adjuster into
the caster frame and the caster wheel. Install
the adjuster and axle capscrew. Tighten the
capscrew to 35 N•m (25 lbf ft).
4. To reinstall the caster, align the caster with the
holes in the frame and install the four screws.
Tighten the nuts to 56 to 58 N•m (41 to 43 lbf ft).
5. Repeat procedure to replace the second caster, if
necessary.

Disassemble

1. Remove the caster wheel from the frame. Refer to
Caster Replacement in this section.
2. Remove the axle capscrews and the adjusters
from the caster.
4
Drive the axle from the caster wheel and remove
the wheel. See Figure 4.
3. Remove the dust caps, spacers, bearings, and
bushing from the caster wheel.
NOTE: If necessary, the wheel frame can be separa-
ted from the pivot frame by removing the pivot bolt.
This should only be required if servicing the caster
springs.
4. Remove the plug from the top of the caster as-
sembly and remove the retaining ring.
5. Separate the top plate from the pivot frame.
6. Remove the retaining ring from the bottom of the
top plate and remove the bearing.
1. PLATE
2. FORK
3. FORK
4. CAPSCREW
5. LOCKNUT
6. SPRING
7. BALL BEARING
8. SNAP RING
9. SNAP RING
10. CAP
Figure 4. Caster Wheel
4000 YRM 1509
11. PIN
12. ADJUSTER
13. WHEEL
14. TUBE
15. BEARING
16. AXLE
17. TUBE
18. SCREW
19. GUARD