Nissan Pathfinder (2007 year). Instruction — part 237
FRONT TIMING CHAIN CASE
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2007 Pathfinder
c.
Install new collared O-rings in front timing chain case oil hole
(left and right sides).
d.
Being careful not to move seal ring from the installation groove, align dowel pins on front timing chain
case with the holes to install intake valve timing control covers.
e.
Tighten bolts in numerical order as shown.
7.
Install crankshaft pulley as follows:
a.
Install crankshaft pulley, taking care not to damage front oil seal.
●
When press-fitting crankshaft pulley with plastic hammer, tap on its center portion (not circumference).
b.
Tighten crankshaft pulley bolt in two steps.
c.
Remove Tool.
8.
Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it turns
smoothly.
9.
Installation of the remaining components is in the reverse order of removal after this step.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluid leaks, lubricant leaks and exhaust gases leaks.
●
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to
MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS"
●
Use procedure below to check for fuel leakage.
●
Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
PBIC2631E
PBIC0918E
Step 1
: 44.1 N·m (4.5 kg-m, 33 ft-lb)
Step 2
:84
°
- 90
°
degrees clockwise
Tool number
: KV10117700 (J-44716)
WBIA0580E
EM-54
FRONT TIMING CHAIN CASE
2007 Pathfinder
●
Start engine. With engine speed increased, check again for fuel leakage at connection points.
●
Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in the guide may
generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.
●
Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.
●
Bleed air from lines and hoses of applicable lines, such as in cooling system.
●
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
Item
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Other oils and fluid*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
TIMING CHAIN
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TIMING CHAIN
PFP:13028
Removal and Installation
EBS00QBZ
PBIC2917E
EM-56
TIMING CHAIN
2007 Pathfinder
NOTE:
●
This section describes procedures for removing/installing front timing chain case and timing chain related
parts, and rear timing chain case, when oil pan (upper) needs to be removed/installed for engine overhaul,
etc.
●
To remove/install front timing chain case, timing chain, and its related parts without removing oil pan
(upper), refer to
EM-46, "FRONT TIMING CHAIN CASE"
.
REMOVAL
1.
Remove engine cover with power tool. Refer to
2.
Release the fuel pressure. Refer to
EC-79, "FUEL PRESSURE RELEASE"
3.
Drain engine oil. Refer to
CAUTION:
●
Perform this step when engine is cold.
●
Do not spill engine oil on drive belts.
4.
Drain engine coolant from radiator. Refer to
CO-10, "DRAINING ENGINE COOLANT"
CAUTION:
●
Perform this step when engine is cold.
●
Do not spill engine coolant on drive belts.
5.
Remove radiator cooling fan assembly. Refer to
6.
Separate engine harnesses removing their brackets from front timing chain case.
7.
Remove drive belts. Refer to
8.
Remove power steering oil pump from bracket with piping connected, and temporarily secure it aside.
Refer to
9.
Remove power steering oil pump bracket. Refer to
10. Remove alternator. Refer to
11. Remove water bypass hose, water hose clamp and idler pulley bracket from front timing chain case.
12. 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) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.
1.
Timing chain tensioner (secondary)
(left bank)
2.
Internal chain guide
3.
Timing chain tensioner (secondary)
(right bank)
4.
Camshaft sprocket (EXH)
5.
Timing chain (secondary)
6.
Timing chain (primary)
7.
Camshaft sprocket (INT)
8.
Camshaft sprocket (INT)
9.
Slack guide
10. Timing chain tensioner (primary)
11. Crankshaft sprocket
12.
Collared O-ring
13. O-ring
14. Intake valve timing control cover
15.
Idler pulley
16. Drive belt auto tensioner
17. Cooling fan bracket
18.
Crankshaft pulley
19. Front oil seal
20. Water pump cover
21.
Chain tensioner cover
22. Front timing chain case
23. Rear timing chain case
24.
Water drain plug (front)
25. Tension guide
26. O-ring
Tool number
: KV10111100 (J-37228)
SEM728G
TIMING CHAIN
EM-57
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13. Remove collared O-rings from front timing chain case (left and
right side).
14. Remove rocker covers (right and left banks). Refer to
EM-41, "Removal and Installation"
NOTE:
When only timing chain (primary) is removed, rocker cover does not need to be removed.
15. Obtain No. 1 cylinder at TDC of its compression stroke as follows:
NOTE:
When timing chain is not removed/installed, this step is not required.
a.
Rotate crankshaft pulley clockwise to align timing mark (grooved
line without color) with timing indicator.
b.
Make sure that intake and exhaust cam noses on No. 1 cylinder
(engine front side of right bank) are located as shown.
●
If not, turn crankshaft one revolution (360
°
) and align as
shown.
NOTE:
When only timing chain (primary) is removed, rocker cover does
not need to be removed. To make sure that No. 1 cylinder is at
its compression TDC, remove front timing chain case first. Then
check mating marks on camshaft sprockets. Refer to
16. Remove crankshaft pulley as follows:
a.
Remove starter motor and set Tool. Refer to
PBIC2631E
KBIA1717J
SEM418G
Tool number
: KV10117700 (J-44716)
WBIA0580E
EM-58
TIMING CHAIN
2007 Pathfinder
b.
Loosen crankshaft pulley bolt and locate bolt seating surface as
10 mm (0.39 in) from its original position.
CAUTION:
Do not remove crankshaft pulley bolt. Keep loosened
crankshaft pulley bolt in place protect removed crankshaft
pulley from dropping.
c.
Pull crankshaft pulley with both hands to remove it.
17. Loosen two bolts in front of oil pan (upper) in reverse order as
shown.
18. 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 tilt, cant, or warp under a load.
PBIC2918E
PBIC2907E
PBIC2908E
Tool number
: KV10111100 (J-37228)
SEM156F
TIMING CHAIN
EM-59
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19. Remove O-rings from rear timing chain case.
20. Remove water pump cover and chain tensioner cover from front timing chain case, if necessary.
●
Cut liquid gasket for removal using Tool.
21. Remove front oil seal from front timing chain case using suitable
tool.
CAUTION:
Be careful not to damage front timing chain case.
22. Use a scraper to remove all traces of old liquid gasket from front
and rear timing chain cases and oil pan (upper), and liquid gas-
ket mating surfaces.
CAUTION:
Be careful not to allow gasket fragments to enter oil pan.
●
Remove old liquid gasket from bolt hole and thread.
PBIC2548E
PBIC2909E
PBIC2910E
PBIC2084E
EM-60
TIMING CHAIN
2007 Pathfinder
23. Use a scraper to remove all traces of old liquid gasket from
water pump cover, chain tensioner cover and intake valve timing
control covers.
24. Remove timing chain tensioner (primary) as follows:
a.
Loosen clip of timing chain tensioner (primary), and release
plunger stopper. (1)
b.
Insert plunger into tensioner body by pressing slack guide. (2)
c.
Keep slack guide pressed and hold plunger in by pushing stop-
per pin through the tensioner body hole and plunger groove. (3)
d.
Remove bolts and remove timing chain tensioner (primary).
25. Remove internal chain guide, tension guide and slack guide.
NOTE:
Tension guide can be removed after removing timing chain (pri-
mary).
26. Remove timing chain (primary) and crankshaft sprocket.
CAUTION:
After removing timing chain (primary), do not turn crankshaft and camshaft separately, or valves
will strike the piston heads.
27. Remove timing chain (secondary) and camshaft sprockets as follows:
SEM926E
PBIC2919E
PBIC2266E
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