Nissan Frontier D40. Instruction — part 610
EM-172
< ON-VEHICLE REPAIR >
[VQ40DE]
FRONT TIMING CHAIN CASE
c.
Remove Tool.
9.
Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it turns
smoothly.
10. Installation of the remaining components is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
• Before starting the engine, check oil/fluid levels including engine coolant and engine oil. If the levels are
lower than required quantity, fill to the specified level. Refer to
MA-16, "For North America: Fluids and Lubri-
• Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and 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 gas, or any oil/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down the engine, again check oil/fluid levels including engine oil and engine coolant. Refill to
specified level if necessary.
• Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
Step 1
: 44.1 N·m (4.5 kg-m, 33 ft-lb)
Step 2
: 84
°
- 90
°
degrees clockwise
Tool number
: — (J-48761)
WBIA0580E
Item
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Other oils and fluids*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
Exhaust gas
—
Leakage
—
TIMING CHAIN
EM-173
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TIMING CHAIN
Exploded View
INFOID:0000000005274344
Removal and Installation
INFOID:0000000005274345
CAUTION:
• After removing timing chains, do not turn the crankshaft and camshaft separately, or the valves will
strike the pistons.
• When installing camshafts, chain tensioners, oil seals, or other sliding parts, lubricate contacting
surfaces with new engine oil.
• Apply new engine oil to bolt threads and seat surfaces when installing camshaft sprockets, camshaft
brackets, and crankshaft pulley.
REMOVAL
1.
Remove front timing chain case. Refer to
EM-164, "Removal and Installation"
.
2.
Remove timing chain tensioner (primary) as follows:
AWBIA0859GB
1.
Internal chain guide
2.
O-ring
3.
Timing chain tensioner (secondary) (RH)
4.
Camshaft sprocket (EXH)
5.
Timing chain (secondary)
6.
Timing chain (primary)
7.
Camshaft sprocket RH (INT)
8.
Camshaft sprocket LH (INT)
9.
Slack guide
10.
Timing chain tensioner (primary)
11.
Crankshaft sprocket
12.
Timing chain tensioner (secondary) (LH)
13.
O-ring
14.
Tension guide
EM-174
< ON-VEHICLE REPAIR >
[VQ40DE]
TIMING CHAIN
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).
3.
Remove internal chain guide, tension guide and slack guide.
NOTE:
Tension guide can be removed after removing timing chain (pri-
mary).
4.
Remove timing chain (primary).
CAUTION:
After removing timing chain (primary), do not turn crankshaft and camshaft separately, or valves
will strike the piston heads.
5.
Remove crankshaft sprocket, if necessary.
6.
Remove timing chain (secondary) and camshaft sprockets as follows:
a.
Attach suitable stopper pin to the right and left timing chain ten-
sioners (secondary).
NOTE:
• Use approximately 0.5 mm (0.02 in) dia. hard metal pin as a
stopper pin.
• For removal of timing chain tensioner (secondary), refer to
. [Removing camshaft bracket (No. 1) is required.]
PBIC2919E
PBIC2266E
PBIC2047E
TIMING CHAIN
EM-175
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b.
Remove camshaft sprocket (INT and EXH) bolts.
• Secure the hexagonal portion of camshaft using wrench to
loosen bolts.
CAUTION:
Do not loosen bolts by securing anything other than the
camshaft hexagonal portion.
c.
Remove timing chain (secondary) together with camshaft sprockets.
• Turn camshaft slightly to secure slackness of timing chain on timing chain tensioner (secondary) side.
• Insert 0.5 mm (0.020 in)-thick metal or resin plate between tim-
ing chain and timing chain tensioner plunger (guide). Remove
timing chain (secondary) together with camshaft sprockets
with timing chain loose from guide groove.
CAUTION:
Be careful of plunger coming off when removing timing
chain (secondary).
NOTE:
Camshaft sprocket (INT) is a one piece integrated design
sprockets for timing chain (primary) and for timing chain (sec-
ondary).
• When handling camshaft sprocket (INT), be careful of the fol-
lowing:
CAUTION:
• Handle carefully to avoid any shock to camshaft
sprocket.
• Do not disassemble. (Do not loosen bolts (A) as shown).
7.
Remove timing chain tensioners (secondary) from cylinder head if necessary.
a.
Remove camshaft brackets (No. 1). Refer to
EM-187, "Removal and Installation"
b.
Remove timing chain tensioners (secondary) with stopper pin attached.
INSPECTION AFTER REMOVAL
Check for cracks and any excessive wear at link plates. Replace
chain if necessary.
• In the same way as for the LH bank, inspect the timing chain and
associated parts on the RH bank.
KBIA1698J
PBIC1978E
PBIC2920E
PBIC0282E
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