GHC SERIES
OM-04386
PAGE B-5
INSTALLATION
The coupling is in alignment when the hub ends
are the same distance apart at all points (see Fig
ure B‐2).
Figure B‐2.
Spider‐type Couplings
Align non‐spider type couplings by using a feeler
gauge or taper gauge between the coupling halves
every 90
. The coupling is in alignment when the
hubs are the same distance apart at all points (see
Figure B‐3).
Figure B‐3
.
Aligning Non‐Spider Type Coupling
Check parallel adjustment by laying a straightedge
across both coupling rims at the top, bottom, and
side. When the straightedge rests evenly on both
halves of the coupling, the coupling is in horizontal
parallel alignment. If the coupling is misaligned,
use a feeler gauge between the coupling and the
straightedge to measure the amount of misalign
ment.
V‐Belt Drives
GMS style pumps will require an external
bearing support when using V‐belt drives.
When using V‐belt drives, the power source and
the pump must be parallel. Use a straightedge
along the sides of the pulleys to ensure that they
are properly aligned (see Figure B‐4). In drive sys
tems using two or more belts, make certain that the
belts are a matched set; unmatched sets will cause
accelerated belt wear.
MISALIGNED:
SHAFTS
NOT PARALLEL
MISALIGNED:
SHAFTS
NOT IN LINE
ALIGNED: SHAFTS
PARALLEL AND
SHEAVES IN LINE
Figure B‐4. V‐belt Alignment
Tighten the belts in accordance with the belt man
ufacturer's instructions. If the belts are too loose
they will slip; if they are too tight, there will be ex
cessive power loss and possible bearing failure.
Select pulleys to match the proper speed ratio;
overspeeding the pump may damage both pump
and power source.
Do not operate this pump without
guards in place over the rotating parts.
Exposed rotating parts can catch cloth
ing, fingers or tools, causing severe in
jury to personnel.
V‐BELT TENSIONING
General Rules of Tensioning
For new v‐belts, check the tension after 5, 20 and
50 hours of operation and re‐tension as required
(see the following procedure for measuring belt
tension). Thereafter, check and re‐tension if re
quired monthly or at 500 hour intervals, whichever
comes first.
