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Flywheel
Housing
1
Dimensions
A
20
⁄
1
8
B
20
⁄
7
8
No.
12
C
Size
⁄
-14
7
1 6
Table 1
Figure 3
INSTALLATION
• The pump may be installed horizontally, with the dis-
charge rotated to any position allowed by the casing
bolt pattern (13). It is recommended that the discharge
be located horizontally, above the suction.
• The casing must be supported on all pumps by a rigid
support which is anchored to the unit base or foundation.
• For M-Group pumps it is recommended that this support
is bolted to the motor adapter ring using 2 or more of
the casing bolts (13). It is likely that longer bolts will be
required for the additional support thickness. Use SAE
grade 5 bolts, torqued as indicated in this manual.
• For L-Group pumps it is recommended that the pump
is supported beneath the two feet cast into the motor
adapter (3). These feet must be bolted to the support.
PUMP TO ENGINE ASSEMBLY (SPLINE COUPLING)
Preparation for Assembly of Pump on Engine
• Clean face and register fit of flywheel housing and
flywheel as necessary to remove all grease, dirt, or rust
(and all traces of rust preventative) which would inter-
fere with installation of pump and/or prevent correct
alignment. If flywheel is fitted with a pilot bearing for a
transmission shaft, remove and discard. The pilot bear-
ing is not required for installation of the pump end, and
could interfere with the pump shaft.
Figure 4
All manuals and user guides at all-guides.com
SAE Flywheel Housing Size
2
3
4
17
⁄
16
⁄
14
⁄
12
5
1
1
8
8
4
18
⁄
16
⁄
15
13
3
7
8
8
12
12
12
⁄
-16
⁄
-16
⁄
-16
⁄
3
3
3
3
8
8
8
8
• Examine shaft spline closely. Use a file, if necessary, to
remove any burrs that would prevent coupling from
5
sliding freely onto the shaft.
⁄
3
• Lubricate pump shaft spline sparingly with light grease.
8
⁄
1
Don't lubricate straight keyed shaft.
8
8
• Slide the coupling onto shaft until it is stopped against
-16
the shaft (refer to page 5 for straight shaft installation).
• Measure the distance from the engine side of the fly-
wheel coupling adapter ring to the mounting face of the
pump bracket. Refer to Figure 4 below, Dimension "A".
• Next, measure depth from face of flywheel housing on
engine, to face on flywheel against which coupling will
be bolted. Refer to Figure 4 below, Dimension "B".
• Pump measurement must be less than engine measure-
ment or axial interference will result in thrust force on
engine crank shaft bearings. Simply stated, Dimension
"A" must be less than Dimension "B".
FLYWHEEL COUPLING
• The flywheel coupling transmits power from the engine
flywheel to the pump shaft. The maximum power that a
coupling can safely handle is shown by a rating number,
"R", which is listed in the coupling dimensions tables.
• When selecting a flywheel coupling for a pump and
engine, first determine the power rating that the pump
will demand. On the pump performance curve, find the
RPM and BHP values required to produce the spplica-
tion head-capacity point.
• Divide the BHP by the RPM, then multiply the result
times 100. The result will be the demand number for
the pump. For example, a 20BFSAE1AO can deliver
800 GPM at 270 feet Total Head when running at 1800
RPM. The power required by the pump will be 75 BHP.
The demand number will be: (75 / 1800) x 100 = 4.16
• Next, select a coupling that can safely transmit the
power, and which will fit the flywheel dimensions. For a
coupling to be suitable, it must have an "R" rating num-
ber GREATER THAN the pump demand number. In the
above example, the minimum coupling "R" number
whould be 5.
• Torsional compatibility of the engine, pump, and cou-
pling is the responsibility of the assembler. Goulds Wa-
ter Systems will supply data for the pump and coupling
for use by the assembler for a torsional analysis.
NOTE: If the flywheel is fitted with a pilot bearing
pressed into a bore at the center, remove it to avoid inter-
ference with the pump shaft.
Figure 5
5
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