Carrier 40UV - Page 37

Sleeve Bearing Replacement (40UV050-125,
40UH075-125 and 40UH200 Units Only)
(Fig. 17)--Refer to Fig. 13 for 40UH200 units only,
Fig. 14 for 40UV050-150 and 40UH075-125 units with PSC
motors, Fig. 15 for 40UV050-125 and 40UH075-150 units
with ECM motors.
Lock out and tag all power supplies to equipment and con-
trois prior to servicing unit. Follow all safety codes. Failure
to do so could result in personal injury.
The assembly order of the bearing installation is critical. Be
careful with all components during removal and installa-
tion. Any excessive force applied to these components can
cause unintended damage and void unit warranty
To replace ball bearing:
1. Turn off all power to unit.
IMPORTANT: Tag each right front panel (40UV) or
middle bottom panel (40UH) for each unit. Panels have
electrical information specifi_cto each unit.
2. Use 5/32in. hex (Allen) tool or 3Isin. nut driver to remove
front (40UV) or bottom (40UH) panels and right (motor
end) end panel.
3. Remove lh in. head screws (Item 5 in Fig. 10) along
length of unit that secure coil baffle to blower section and
remove front coil baffle.
4. Remove left blower section end (Item 2 in Fig. 17) insu-
lation (Item I in Fig. 17).
5. Use 7h6 in. socket to remove hex nuts (Fig. 13, Item 13;
Fig. 14, Item 8; Fig. 15, Item 9) securing end beating
bracket (Fig. 13, Item 12; Fig. 14, Item 7; Fig. 15, Item 8)
to blower section end.
6. Remove beating bracket assembly (Fig. 13, Items 12, 14,
13, l 1;Fig. 14, Items 7, 10,9, 11;Fig. 15,Items 8, 11, 10,
12) from blower section end. Use care to slide assembly
off of shaft end. Hold shaft from inside blower section
to prevent wheel damage.
7. Use I/2 in. socket and t/2 in. combination wrench to
remove hex nuts (Fig. 13, Item 13; Fig. 14, Item 9;
Fig. 15, Item I0) and bolts (Fig. 13, Item II; Fig. 14, Item
II; Fig. 15, Item 12) holding bearing (Fig. 13, Item 14;
Fig. 14, Item I0; Fig. 15, Item II) and beating bracket
(Fig. 13, Item 12; Fig. 14, Item 7; Fig. 15, Item 8)
together.
Ensure sleeve beating is installed with oil cup facing
upwards as shown in left side view.
8.
9.
Replace beating (Fig. 13, Item 14; Fig. 14, Item 10;
Fig. 15, Item 11). Attach to bearing bracket using hex
nuts and bolts. Align oil cup port with matching cutout in
bearing bracket.
Use 7/16in. socket to slide replacement beating (Fig. 13,
Item 14; Fig. 14, Item 10; Fig. 15, Item 11) on to the end
of shaft and install beating bracket assembly (Fig. 13,
Items 12, 14, 13, 11; Fig. 14, ltems 7, 10,9, 11; Fig. 15,
Items 8, 11, 10, 12) in blower section end. Attach using
hex nuts.
10. Add 5 to 10 drops of SAE 20 or 30 non-detergent based
oil to bearing.
11. Rotate the fan shaft by hand to ensure that farts are
unrestricted and can rotate freely. Check for any fan
obstructions.
12. Reinstall left blower section end insulation (Item 1 in
Fig. 17).
13. Reinstall !/4 in. head screws (Item 5 in Fig. 10) along
length of unit securing coil baffle to the blower section.
14. Reinstall front (40UV) or bottom (40UH) panels. Rein-
stall end panels. Ensure that tag on each right front
panel (40UV) or middle bottom panel (40UH) match-
es unit tag.
15. RestorepowertouniL
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