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Idiomas disponibles
Idiomas disponibles
Self-Priming Engine Cooling Pump
FEATURES
Pump Body:
Impeller:
Shaft:
Shaft Seal:
Ports:
Weight:
VARIATIONS AVAILABLE
MODEL NO.
50410-1201
(Replaces 22110-0201 & 23800-0201)
50410-1251
(Replaces 22110-0251 & 23800-0251)
50410-1301
(Replaces 22110-0301 & 23800-0301)
50410-1351
(Replaces 22110-0351 & 23800-0351)
50410-1401
(Replaces 22400-0201)
APPLICATION
MARINE ENGINE COOLING
50410-1251 & 50410-1351 Fit:
305 & 350 C.I. Chevrolet Block
50400-1201 & 50410-1301 Fit:
454 C.I. Chevrolet Block
50410-1401 Fit:
8.1 Liter Chevrolet Block
INSTALLATION
This pump is designed to mount directly inside the crank-shaft
pulley on Chevrolet small block (305 & 350 C.I.) engines. The
maximum recommended pump speed (engine speed) is 5200
RPM. The maximum recommended discharge pressure should
not exceed 10 PSI (0.7 Bar). When the pump is installed so it
operates at or near maximum speed, the inlet plumbing must be
designed to minimize the vacuum at the pump inlet. A high speed
scoop over the inlet thru-hull fitting is recommended to reduce
inlet vacuum.
To install the pump on the crankshaft pulley, remove all belts that
run off the pulley. Remove the bolts that secure the pulley to the
vibration dampener.
Note that in addition to the three 3/8" (9.5mm) mounting bolt
holes there are two pair of larger 5/8" (16mm) locator holes in the
pump mounting flange. These locator holes are used to position
the pump on Chevrolet engines. Either one or the other pair of
locator holes aligns with the two raised positioning bosses in
the crankshaft pulley. Generally, the pair of holes located in a
Bronze
Jabsco Neoprene Compound
316 Stainless Steel
Buna/Nitrile Lip Seal or
Mechanical Face Seal
1-1/4" (31.75mm) Hose Barb
5 lb (2.2 kg) Approx.
DESCRIPTION
Lip Seal/Full Cam
Lip Seal/Half Cam
Mechanical Seal/Full Cam
Mechanical Seal/Half Cam
Lip Seal/Full Cam
counterclockwise direction (viewed from the end cover end of
pump) from the alternate pair of holes is used to position the
pump on the 305 and 350 cubic inch engines. Usually, the pair of
locator holes located clockwise of the alternates is used to position
the pump on the 454 cubic inch engine. However, there are occa-
sional exceptions to this general rule so always ensure the pump
mounting flange rests flat against the pulley prior to securing
it in place. If the mounting flange does not rest flat against the
pulley, reposition it aligning the alternate locator holes with the
positioning bosses.
Place the pump in the center of the crankshaft pulley with the
appropriate pair of locating holes aligned with the positioning
bosses in the pulley. Ensure the pulley is properly aligned with
the vibration dampener and secure both the pump and pulley to
the dampener with three 3/8-24 x 3/4" cap screws (socket type)
machine screws.
Replace all belts on the crankshaft pulley. Attach a torque arm/
bracket from the torque arm boss on the pump to a convenient
bolt on the engine. This torque arm must not impose a side force
on the pump assembly. This could shorten bearing life in high
RPM service. Attach and double clamp the intake and discharge
hoses (1-1/4" (32mm) ID) to the pump ports. Be sure the hoses do
not impose a side force on the pump assembly. This could shorten
pump bearing life in high RPM service. Hoses should be flexible
and supported by the engine (not the pump). Start the engine and
run at low speeds. Check the installation for leaks or vibration.
NOTICE: Failure to install the pump as instructed may result in
excessive vibration which can contribute to pump and/or engine
damage.
2
Model 50410-Series
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