SPX Marley NC8409 - Page 23

23
SHEAVE
STRAIGHT EDGE
SHEAVE
THREADED ROD
FAN SHAFT
Sheave Alignment
 • 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bottom
surface of the motor and fan sheaves must be aligned within
1
⁄8" of each
other and level within
1
⁄2° (
1
⁄8" in 12) in order to not adversely affect belt and
sheave life.
 • Alignmentcanbeachievedbyplacingastraightedgeacrossthesheaves
making sure that it is level and measuring down to the bottom surface of
both sheaves at four points.
 • Thebeltistobelocatedinthelowestsetof
grooves.
maintenance
gnihsuB eziSrenetsaF
euqroT
bl·tf
ƒ
m·N
HS
₄⁄¹ 02-
6 8
SDS
₄⁄¹ 02-
6 8
DS
₄⁄¹ 02-
6 8
KS
₆₁⁄⁵ 81-
31 81
FS
₈⁄³ 61-
22 03
E
₂⁄¹ 31-
53 84
F
₆₁⁄⁹ 21-
56 88
Bushing Fastener
Torque Values