Nissan Xterra. Manual - part 356

EM-52

< REMOVAL AND INSTALLATION >

[VQ40DE]

FRONT TIMING CHAIN CASE

7. Remove power steering oil pump from bracket with piping connected, and temporarily secure it aside.

Refer to 

ST-17, "Removal and Installation"

.

8. Remove power steering oil pump bracket. Refer to 

ST-17, "Removal and Installation"

.

9. Remove generator. Refer to 

CHG-27, "Removal and Installation"

.

10. Remove water bypass hoses and water hose clamp.
11. Remove engine cooling fan (Crankshaft driven type) and fan bracket. Refer to 

CO-18, "Removal and

Installation (Crankshaft driven type)"

.

12. Remove water hose at oil cooler.
13. Remove oil cooler water bypass pipe from front timing chain case. Refer to 

EM-51, "Exploded View"

.

14. Remove right and left intake valve timing control covers.

• Loosen bolts in reverse order as shown.

• Cut liquid gasket for removal using Tool.

CAUTION:

• Shaft is internally jointed with camshaft sprocket (INT)

center hole. When removing, keep it horizontal until it is

completely disconnected.

• Do not damage the mating surfaces.

15. Remove collared O-rings from front timing chain case (left and

right side).

CAUTION:

Do not reuse O-rings.

16. Remove A/C compressor bolts and temporarily secure A/C compressor aside. Refer to 

HA-27, "Removal

and Installation of Compressor"

.

17. Remove crankshaft pulley as follows:
a. Remove access plate and install Ring Gear Stopper Tool. 

b. Loosen crankshaft pulley bolt so that there is a 10 mm (0.39 in)

gap between bolt and crankshaft pulley.

CAUTION:

Do not remove crankshaft pulley bolt. Keep loosened

crankshaft pulley bolt in place to protect the crankshaft pul-

ley from dropping.

c.

Pull crankshaft pulley with both hands to remove it.

Tool number

: KV10111100 (J-37228)

SEM728G

PBIC2631E

Tool number

: KV11105210 (J-44716)

PBIC2918E

FRONT TIMING CHAIN CASE

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18. Loosen two bolts in front of oil pan (upper) in reverse order as

shown.

19. Remove front timing chain case as follows:
a. Loosen bolts with power tool in reverse order as shown.

b. Insert suitable tool into the notch at the top of the front timing

chain case as shown (1).

c. Pry off case by moving tool as shown (2).

• Cut liquid gasket for removal using Tool. 

CAUTION:

• Do not use screwdriver or something similar.

• After removal, handle front timing chain case carefully so

it does not twist, bend, or warp under a load.

• Do not damage the mating surface.

20. Remove O-rings from rear timing chain case.

CAUTION:

Do not reuse O-rings.

21. If necessary, remove water pump cover and chain tensioner cover from front timing chain case.

• Cut liquid gasket for removal using Tool. 

CAUTION:

Do not damage the mating surfaces.

PBIC2907E

PBIC2908E

Tool number

: KV10111100 (J-37228)

SEM156F

PBIC2548E

Tool number

: KV10111100 (J-37228)

EM-54

< REMOVAL AND INSTALLATION >

[VQ40DE]

FRONT TIMING CHAIN CASE

22. Remove front oil seal from front timing chain case using suitable

tool.

CAUTION:

Be careful not to damage front timing chain case.

23. Remove idler pulley, if necessary. Refer to 

EM-14, "Drive Belt Auto-Tensioner and Idler Pulley"

.

24. Use a scraper to remove all traces of old liquid gasket from front

and rear timing chain cases, oil pan (upper), and liquid gasket

mating surfaces.

CAUTION:

Be careful not to allow gasket fragments to enter oil pan.

• Remove old liquid gasket from bolt hole and thread.

25. Use a scraper to remove all traces of old liquid gasket from

water pump cover, chain tensioner cover (if necessary) and

intake valve timing control covers.

INSTALLATION

PBIC2909E

PBIC2910E

PBIC2084E

SEM926E

FRONT TIMING CHAIN CASE

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1. Hammer dowel pins (right and left) into front timing chain case

up to a point close to taper in order to shorten protrusion length.

NOTE:

Be sure to place dowel pins in the original holes in front timing

chain case.

2. Install new front oil seal on the front timing chain case.

• Apply new engine oil to both oil seal lip and dust seal lip.

• Install it so that each seal lip is oriented as shown. 

• Press-fit oil seal until it becomes flush with front timing chain

case end face using suitable drift [outer diameter: 60 mm (2.36

in)].

• Make sure the garter spring is in position and seal lip is not

inverted.

CAUTION:

• Be careful not to damage front timing chain case and

crankshaft.

• Press-fit straight and avoid causing burrs or tilting oil

seal.

3. Install water pump cover and chain tensioner cover to front timing chain case, if removed.

• Apply a continuous bead of liquid gasket using Tool to front

timing chain case as shown.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-21, "Recommended Chemical Products and Sealants"

.

4. Install idler pulley, if removed.
5. Install front timing chain case as follows:

PBIC2615E

SEM715A

PBIC2911E

Tool number

: WS39930000 (

—

)

PBIC2912E