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Original Issue Date: 2/08
Model: 13/15.5/20/23EOZD and 11/13/17/20EFOZD
Market: Marine
Subject: Seawater Pump Service Kit GM59333
TT-1479 11/10
INSTALLATION INSTRUCTIONS
Introduction
Use this service kit to replace the existing seawater pump
(GM35622) with a new seawater pump design which
incorporates a pressed-on pulley . Installation of the
service kit involves replacing the seawater pump and
bracket.
Note: If impeller replacement is necessary, use impeller
kit 229826 for seawater pump service kit
GM59333.
Safety Precautions
WARNING
Accidental starting.
Can cause severe injury or death.
Disconnect the battery cables before
working on the generator set.
Remove the negative (--) lead first
when disconnecting the battery.
Reconnect the negative (--) lead last
when reconnecting the battery.
WARNING
Hazardous voltage.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
areinplace.
Servicing the generator set when it is operating. Exposed
moving parts can cause severe injury or death. Keep
hands, feet, hair, clothing, and test leads away from the belts
and pulleys when the generator set is running. Replace
guards, screens, and covers before operating the generator
set.
Note: Retorque all crankshaft and rotor hardware after
servicing. Do not loosen the crankshaft hardware
or rotor thrubolt when making adjustments or
servicing the generator set. Rotate the
crankshaft manually in a clockwise direction only.
Turning the crankshaft bolt or rotor thrubolt
counterclockwise can loosen the hardware.
Moving parts.
Installation Procedure
Disabling the generator set. Accidental starting can
cause severe injury or death. Before working on the
generator set or connected equipment, disable the generator
set as follows: (1) Move the generator set masterswitchtothe
OFF position. (2) Disconnect the powerto the battery charger.
(3) Remove the battery cables, negative (--) lead first.
Reconnect the negative (--) lead last when reconnecting the
battery. Follow these precautions to prevent starting of the
generator set by an automatic transfer switch, remote
start/stop switch, or engine start command from a remote
computer.
1. Remove the generator set from service.
1.1 Place the generator set master switch in the OFF
position.
1.2 Disconnect the power to the battery charger, if
equipped.
1.3 Disconnect the generator set engine starting
battery(ies), negative (−) lead first.
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2. Remove and replace the seawater pump.
2.1 Remove and save the belt guard.
2.2 Remove and save the seawater pump belt. See
Figure 1.
(Shown with belt guard removed.)
Engine-End View
5
2.3 Remove and discard the existing seawater pump,
mounting bracket, and seawater pump hardware.
Engine-End View
3
2
1
DK-250000-AI
1. Seawater pump (344089)
2. Mounting bracket
3. Seawater pump belt
Figure 1 Locator Drawing (Typical)
2.4 Mount the seawater pump (GM46936) to the new
bracket (GM53017) using 2 bolts (X-125-31) and
2 nuts (X-6210-7) as shown in Figure 2.
Side View
4
3
2
1
GM59220-D
1. Bolt (X-125-31 qty. 2) and nut (X-6210-7 qty. 2)
2. Pipe adapter (GM58848) and 90_ connector (X-391-31)
3. Seawater pump (GM46936)
4. Pipe adapter (GM58848) and hose connector (X-582-16)
5. Screw (M931-08070-60), washer (M125A-08-80), and nut
(M6923-08-80)
6. Use existing hardware and spacers (X-400-74 qty. 2) behind
bracket as required.
7. Mounting bracket (GM53017)
8. Screw (M931-08100-60), washer (M125A-08-80) and spacer
(X-400-74). Locate spacer between bracket and gear cover.
Figure 2 Seawater Pump Installation
Parts List
6
7
8
2.5 Mount the new bracket/pump assembly to the
engine using the hardware shown in Figure 2.
2.6 Replace the seawater pump belt. Consult the
operation manual for the belt tensioning
procedure.
2.7 Attach the pipe adapters to the seawater pump
and cut to fit the hose attached to the bottom of the
seawater pump. See Figure 2.
2.8 Replace the belt guard.
3. Restore the generator set to service.
3.1 Check that the generator master switch is in the
OFF position.
3.2 Reconnect the generator set engine starting
battery, negative (−) lead last.
3.3 Reconnect the power to the battery charger, if
equipped.
Seawater Pump Kit GM59333
Qty. Description Part Number
1 Pump, seawater GM46936
2 Bolt (5/16-18 x 0.875 in.) X-125-31
2 Nut, flanged (5/16-18 in.) X-6210-7
1 Bracket, mounting GM53017
2 Adapter, pipe GM58848
2 Washer, plain (8.4 mm ID x 16 mm OD) M125A-08-80
1 Nut, hex (8 mm) M6923-08-80
1 Screw, hex cap (M8 x 70 mm) M931-08070-60
1 Screw, hex cap (M8 x 100 mm) M931-08100-60
1
Connector, 90_
3 Spacer (0.344 ID x 0.625 OD x 0.25 in.) X-400-74
1 Connector, hose X-582-16
X-391-31
2
TT-1479 11/10
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