Nissan X-Trail 32. Manual — part 1125

CYLINDER BLOCK

EM-397

< UNIT DISASSEMBLY AND ASSEMBLY >

[R9M]

Tighten new main bearing cap bolts in numerical order as shown
in the figure with the following procedure:

Pre-tighten main bearing cap bolts.

Tighten main bearing cap bolts.

CAUTION:

Be sure to check that the main bearing cap is in contact with the cylinder block before tightening
the bolts.

ii.

Turn bolts 110 degrees clockwise (angle tightening).

CAUTION:

Confirm the tightening angle by using an angle wrench
[SST: KV10112100 ( — )] (A) or protractor. Never judge by
visual inspection without the tool.

• After installing mounting bolts, check that crankshaft can be rotated smoothly by hand.
• Check crankshaft end play. Refer to

EM-401, "Inspection"

• If replacing the crankshaft, always identify the piston height category to refit in each cylinder to garantee that

the piston protrusion in relation to the cylinder block remains within the tolerance, before refitting the con-
necting rod - piston assemblies. Refer to

EM-401, "Inspection"

Install piston to connecting rod with the following procedure:

Install snap ring to the groove of the piston rear side.
• Insert it fully into the groove.

Assemble piston to connecting rod.
• Point the mark engraved

on the piston head facing and the

bosses

of the big end as shown in the figure.

• Piston pin can be pushed in by hand without excessive force.

From the front to the rear, insert piston pin into piston and con-
necting rod.

Install snap ring to the groove of the piston front side.
• Insert it fully into the groove.
• After installing, check that connecting rod moves smoothly.

Using a piston ring expander (commercial service tool), install piston rings.

CAUTION:

• Be careful not to damage piston.
• Be careful not to damage piston rings by expanding them excessively.

: Engine front

: 25.0 N·m (2.6 kg-m, 18 ft-lb)

JPBIA1801ZZ

JPBIA0846ZZ

: Engine front

JPBIA0732ZZ

EM-398

< UNIT DISASSEMBLY AND ASSEMBLY >

[R9M]

CYLINDER BLOCK

• Position each ring with the gap as shown in the figure referring

to the piston front mark.

Fit the scraper ring

with the hand by way of the connecting

rod.

Lubricate piston pin with engine oil.
• Position the connecting rod in relation to the piston (piston

marking

“V” is opposite the machined bosses

on the big

end)

NOTE:
Piston marking V engine flywheel end, connecting rod marking
(machined bosses) timing end.

10. Engage the pin in the piston and in the small end.

NOTE:
Check that the piston pin slides and rotates easily in the piston and the small end.

11. Refit the snap ring to the piston pin using a flat screwdriver

(apply pressure in the groove

NOTE:
Position the opening in the snap ring towards the piston crown.

JPBIA1058ZZ

E1BIA0503ZZ

E1BIA0504ZZ

E1BIA0505ZZ

CYLINDER BLOCK

EM-399

< UNIT DISASSEMBLY AND ASSEMBLY >

[R9M]

12. Secure the flush bearing shell of the connecting rod body mating

face on side

and push from the opposite side

until the con-

necting rod body mating face is flush.

Place:

• the connecting rod body on the bench,
• the connecting rod upper bearing shell (width = [18.2 mm (0.7

in)]

13. Measure the distance (X) between the edge of the bearing shell

and the wall of the connecting rod body at points

and

14. Center the bearing shell on the connecting rod body.

• Adjust the position of the bearing shell at points

and

using a set of feeler gauges = X: [2 mm (0.1 in)].

• Repeat the previous operations on the remaining connecting

rod bodies and caps

Lubricate with engine oils:

• the cylinder block barrels,
• the piston rings
• the piston skirts,
• the crankshaft crank pins

• Orient the piston rings on the piston pin axis.

15. Lubricate the tool [SST: — (Mot.1979)].
16. Check that the piston rings are correctly engaged in the piston

grooves
• Put the piston on a plane and clean surface.
• Verify the absence of over lap

of the tips of the scraper ring.

NOTE:
Manipulate the piston exclusively by the skirt or the connecting
rod, without touching the scraper ring.

17. Insert the tool [SST: — (Mot.1979)]

on the piston, conical part the first one, by the connecting rod.

NOTE:

E1BIA0506ZZ

E1BIA0507GB

E1BIA0508ZZ

E1BIA0509ZZ

EM-400

< UNIT DISASSEMBLY AND ASSEMBLY >

[R9M]

CYLINDER BLOCK

The engagement of the tool [SST: — (Mot.1979)] on the piston has to be made without forcing. If resis-
tance during the engagement occurs, put off the tool and to re-engage it.

18. Check that the pistons correspond to the cylinder block barrels

(No. 1 timing end)
• Place the “connecting rod - piston - tool”

assembly in the

cylinder.

NOTE:
Position the point of the “V” engaged on the piston towards the
flywheel end.

19.

WARNING:

Failure to observe the following procedure may result in destruction of the engine.
• Gradually insert the “connecting rod - piston” assembly in the cylinder (avoid any contact between the

connecting rod and the oil jet) using only of the hand.

• Position the big end on the crankshaft crank pin.
• Refit the connecting rod cap, ensuring that the connecting rod caps and bodies correspond. Refer to

EM-401, "Inspection"

20. Install connecting rod cap bolts.
a.

Tighten new connecting rod cap bolts.

Turn bolts 110 degrees clockwise (angle tightening).

CAUTION:

Confirm the tightening angle by using an angle wrench
[SST: KV10112100 ( — )] (A) or protractor. Never judge by
visual inspection without the tool.
• After tightening connecting rod cap bolt, check that crankshaft

rotates smoothly.

• Check the connecting rod side clearance. Refer to

EM-401,

"Inspection"

• Check the piston protrusion. Refer to

EM-401, "Inspection"

21. Install oil pump and related parts. Refer to

LU-44, "Exploded View"

22. Install oil pan (upper). Refer to

EM-380, "Exploded View"

23. Install rear oil seal retainer with the following procedure:

Set guide bolt