Installation begins at the oilpressure
sending unit. A T-fitting is installed below the sending unit, from
which a hose is fed to the Pre-Luber pump. The control module is
also wired to the coil so that the system can be activated by the
ignition switch.
The Pre-Luber kit comes with an oil pump and an electronic control
box, plus the various fittings and hoses needed for installation.
Basically, the hooks up to the existing oil-sending unit, to the
oil-pan drain plug and to the ignition switch.
To start, drain all oil from the engine and reinstall the drain
plug. Then disconnect the positive cable from the battery.
Next, find an open area in the engine compartment to mount the Pre-Luber
pump, preferably close to the oil-pressure sending unit. On the 350
V-8, the sending unit is located near the distributor at the back of
the engine block. Be sure to locate the pump in an area that is as
high and dry as possible. Although the manufacturer does not advise
that the pump be submerged in water for long periods of time, it is
considered to be water-resistant, although it is not waterproof.
Carefully remove the engine oil-pressure sending unit. Then install
the T-fitting supplied with the kit into the vacant hole. After the
"T" is in position, reinstall the sending unit in one of the
openings and an oil-pressure hose fitting in the other. Be sure to
reconnect the wire to the sending unit.
Now attach both oil-hose fittings to the Pre-Luber oil pump, which
should be mounted nearby. Slip one end of the supplied high-pressure
oil hose on the oil-pan drain and route the other end to the Pre-Luber
pump. The slip-on nipples on the brass fittings are designed to be
used without hose clamps. Before the oil hose is slipped onto the
oil-pump fitting, make sure it is connected to the proper
"inlet" side to allow the oil to flow in the correct
direction from the oil pan to the pump, then to the engine block.
Route the remaining oil-pressure hose from the "outlet"
side of the pump fitting to the T-fitting on the back of the engine
block. Before connecting the hose to the T-fitting, install the
quick-disconnect hose coupler in an accessible location between the
T-fitting and the pump. This coupler is used to disconnect the oil
line when changing oil. All you'll have to do is turn on the ignition,
the pump will activate and pump out the oil in the pan. With all hoses
in place, refill the engine with fresh oil.
The final item to install is the electronic control module. This
small, black box is the brain of the Pre-Luber system. For this
installation, I found an open area on the transom near the battery.
Easily mounted with two screws, the wiring job was now ready to be
completed. The control module has four clearly marked, plugin
terminals labeled yellow, black, red and orange.
Wiring the Pre-Luber system is simple. The kit comes complete with
all needed wires already fitted with factory-attached connectors.
Therefore, no cutting or patching of wires is required. On the oil
pump, there is a built-on pigtail wire with a two-prong female plug.
This is to be plugged into the wiring loom to the control module,
which has two prongs attached to three wires.
Two red wires and one yellow wire come from the Pre-Luber oil-pump
wiring loom. Two of the three wires are plugged into the
control-module receptacles marked with the color that matches the wire
color (red and yellow). The third red wire will be connected to the
battery terminal. This wire has an inline fuse coupled with a large
eyelet for the battery terminal.
Plug the orange wire into the control-module position marked
"orange" and route the other end of the wire to the positive
side of the ignition coil (near the distributor). This wire, like the
red battery-terminal wire, has an inline fuse.
The final wire to attach is the black wire. After it is plugged
into the black receptacle on the electronic module, the other end
should be connected to either the battery ground terminal or to a
solid ground on the engine block.
When installation is complete, check its operation by turning on
the ignition key. The electric Pre-Luber pump should begin its
15-second cycle. and the oil-pressure gauge will begin to show oil
pressure. After its 15-second cycle, the Pre-Luber pump will shut off,
signaling that it is time to start the engine.
After the engine is shut off, the oil pump will resume pumping to
cool the oil. The post-pumping time can be set manually between 30
seconds and five minutes with an adjustment on the electronic control
module.
It's important to note that installation of the Pre-Luber does not
interfere with starting the engine. If you forget, or are in a hurry
and don't want to wait until oil pressure is built up, you can still
turn the key completely and start the engine.
Installation on the Silver Wing took approximately one hour. While
MerCruiser does not promote the use of this product, it has notified
the manufacturer in writing that use of the Pre-Luber will not void
the warranty of its engines. Volvo and OMC have made no comments, so
it would be wise to check with your dealer.
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