30
Sheave Alignment
Always shut off electrical power to the fluid cooler fan motor prior
to performing any inspections that may involve physical contact
with the mechanical or electrical equipment in or on the fluid cooler.
Lock out and tag out any electrical switches to prevent others from
turning the power back on. Service personnel must wear proper
personal protective clothing and equipment.
• The motor sheave is to be positioned as close as possible to the motor
in order to minimize torque on the motor bushings.
• The motor and fan sheaves may have grooves that are not used. The bot-
tom surface of the motor and fan sheaves must be aligned within 3mm of
each other and level within
1
⁄
2
° (3mm in 30cm) in order to not adversely
affect belt and sheave life.
• Alignment can be achieved by placing a straight edge across the top of
the sheaves making sure that it is level and measuring down to the bot-
tom surface of both sheaves at four points.
• The number of grooves on the motor and fan sheaves may not match
each other, or the number of grooves on the belt. Always install the belts
on the highest grooves on the fan sheave. Doing so will reduce the force
on the fan shaft bearings, thus increasing their life.
maintenance
Warning
Bushing
Fastener
Torque
N·m
SH
1
⁄
4
- 20
8
SDS
1
⁄
4
- 20
8
SD
1
⁄
4
- 20
8
SK
5
⁄
16
- 18
18
SF
3
⁄
8
- 16
30
E
1
⁄
2
- 13
47
F
9
⁄
16
- 12
88
Bushing Fastener
Torque Values
