Fuel Pump Installation (LF1, LFW or LFX)
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Fuel Pump Installation (LF1, LFW or LFX)
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Special Tools
EN 48896
High Pressure Fuel Pump Installation Alignment Gauge
For equivalent regional tools, refer to
Special Tools
.
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1.
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Note
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The camshaft must be in the base circle position before the high pressure fuel pump is installed.
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Use the
EN-48896
alignment gauge (2) to ensure that the camshaft lobe is in the base circle position. At base circle position, the tool will be flush with the head (1).
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2.
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Lubricate the high pressure fuel pump cylinder head bore with 5W30 engine oil.
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3.
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Note
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Ensure that the high pressure fuel pump roller lifter is oriented properly, the camshaft is at base circle and the number 1 piston is at top dead center (TDC) on the exhaust stroke.
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Lubricate the high pressure fuel pump roller lifter with 5W30 engine oil and install into the cylinder head bore.
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4.
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Install a NEW high pressure fuel pressure fuel pump gasket (4).
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5.
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Install a NEW high pressure fuel pump O-ring (5).
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6.
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Note
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Ensure the plastic bolt retainers are installed in the high pressure fuel pump mounting holes before installing.
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Install the valve lifter follower (3).
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7.
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Install the high pressure fuel pump (2).
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8.
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Refer to
Fastener Caution
.
Warning
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Alternately hand-tighten the fuel pump bolts one turn at a time until the pump is fully seated. Trying to draw down the pump without even side-to-side tightening may result in pump plunger damage.
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Start and hand-tighten the NEW high pressure fuel pump bolts (1) evenly and tighten the high pressure fuel pump bolts to
15 Nm (11 lb ft)
.
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9.
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Note
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•
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DO NOT reuse the high pressure fuel rail crossover pipe.
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The tightening order and torque are critical to proper fuel system fit and function. Be sure to follow installation and tightening steps exactly.
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Install the NEW high pressure LH to RH fuel rail crossover pipe by starting all three fuel crossover pipe fitting nuts (1), (2) and (3) to finger-tight only.
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10.
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Tighten the fuel rail crossover pipe fittings to
30 Nm (22 lb ft)
in the following order: (1) Left Fuel Rail, (2) Right Fuel Rail, then (3) Fuel Pump.
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11.
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Install the NEW fuel feed pipe (2) by installing the fuel line nut to the fuel pump finger-tight.
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12.
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Install the right fuel feed pipe bolt finger tight (3).
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13.
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Install the left fuel feed pipe bolt finger tight (1).
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14.
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Tighten the left fuel feed pipe bolt (1) to
10 Nm (89 lb in)
.
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15.
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Tighten the right fuel feed pipe bolt (3) to
10 Nm (89 lb in)
.
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16.
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Tighten the fuel feed pipe coupling's nut to
30 Nm (22 lb ft)
.
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17.
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Install the fuel rail wiring connectors to the fuel feed pipe bracket.
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18.
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Install the fuel rail noise shield (1).
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