Infiniti M45 (Y34). Manual

PRECAUTIONS

EM-3

PRECAUTIONS

PFP:00001

Precautions for Draining Coolant

ABS000OV

●

Drain coolant when engine is cooled.

Precautions for Disconnecting Fuel Piping

ABS000OW

●

Before starting work, make sure no fire or spark producing items are in the work area.

●

Release fuel pressure before disconnecting and disassembly.

●

After disconnecting pipes, plug openings to stop fuel leakage.

Precautions for Removal and Disassembly

ABS000OX

●

When instructed to use special service tools, use the specified tools. Always be careful to work safely,
avoid forceful or uninstructed operations.

●

Exercise maximum care to avoid damage to mating or sliding surfaces.

●

Cover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials.

●

Mark and arrange disassembly parts in an organized way for easy troubleshooting and assembly.

●

When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be
used where noted in the step.

Precautions for Inspection, Repair and Replacement

ABS000OY

●

Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way,
and replace if necessary.

Precautions for Assembly and Installation

ABS000OZ

●

Use torque wrench to tighten bolts or nuts to specification.

●

When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is speci-
fied, do exactly as specified.

●

Replace with new gasket, packing, oil seal or O-ring.

●

Thoroughly wash, clean, and air-blow each part. Carefully check oil or coolant passages for any restriction
and blockage.

●

Guide pins are used for several parts alignment. When replacing and reassembling parts with guide pins,
make sure that guide pins are installed in the original portion.

●

Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.

●

Release air within route when refilling after draining coolant.

●

After repairing, start engine and increase engine speed to check coolant, fuel, oil, and exhaust systems
for leakage.

Parts Requiring Angle Tightening

ABS000P0

●

Use the angle wrench [SST: KV10112100 (BT8653-A)] for the final tightening of the following engine parts:

–

Cylinder head bolts

–

Main bearing cap bolts

–

Connecting rod cap nuts

–

Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angle
tightening)

●

Do not use a torque value for final tightening.

●

The torque value for these parts are for a preliminary step.

●

Ensure thread and seat surfaces are clean and coated with engine oil.

EM-4

PRECAUTIONS

Precautions for Liquid Gasket

ABS000P1

REMOVAL OF LIQUID GASKET SEALING

●

After removing the mounting bolts and nuts, separate the mating
surface using the seal cutter (SST) and remove the old liquid
gasket sealing.

CAUTION:

Be careful not to damage the mating surfaces.

●

In areas where the seal cutter (SST) is difficult to use, use a
plastic hammer to lightly tap (1) the seal cutter where the liquid
gasket is applied. Use a plastic hammer to slide the seal cutter
(2) by tapping on the side.

CAUTION:

If for some unavoidable reason a tool such as a flat-bladed
screwdriver is used, be careful not to damage the mating
surfaces.

LIQUID GASKET APPLICATION PROCEDURE

Using a scraper, remove the old liquid gasket adhering to the liq-
uid gasket application surface and the mating surface.

●

Remove the liquid gasket completely from the groove of the
liquid gasket application surface, mounting bolts, and bolt
holes.

Wipe the liquid gasket application surface and the mating sur-
face removing any adhering moisture, grease and foreign mate-
rial.

Attach the liquid gasket tube to the tube presser (SST).
Use Genuine RTV Silicone Sealant or equivalent. Refer to

Apply the liquid gasket without breaks to the specified location
with the specified dimensions.

●

If there is a groove for the liquid gasket application, apply the
liquid gasket to the groove.

●

As for the bolt holes, normally apply the liquid gasket inside
the holes. Occasionally, it should be applied outside the
holes. Make sure to read the text of this manual.

●

Within five minutes of liquid gasket application, install the mat-
ing component.

●

If the liquid gasket protrudes, wipe it off immediately.

●

Do not retighten after the installation.

●

Wait 30 minutes or more after installation before refilling the
engine with oil and coolant.

CAUTION:

If there are specific instructions in this manual, observe
them.

PBIC0002E

PBIC0003E

PBIC2160E

SEM159F

Infiniti M45 (Y34). Manual - part 516