TIMING CHAIN
EM-65
< REMOVAL AND INSTALLATION >
[VQ40DE]
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4. Install internal chain guide.
• If removed, reinstall slack guide.
CAUTION:
Do not overtighten slack guide bolts. It is normal for a gap
to exist under the bolt seats when bolts are tightened to
specification.
5. Remove stopper pin from primary timing chain tensioner.
6. Make sure again that the mating marks on camshaft sprockets and timing chain have not slipped out of
alignment.
7. Tighten camshaft sprocket bolts to specification with all timing chains installed and Ring Gear Stopper
Tool holding the crankshaft.
8. Install front timing chain case. Refer to EM-51, "Removal and Installation"
.
INSPECTION AFTER INSTALLATION
• 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-13, "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 leak-
age at connection points.
• 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 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 oils/fluids including
engine oil and engine coolant.
PBIC2109E
PBIC2633E
Tool number : KV11105210 (J-44716)
Revision: January 2013 2013 Xterra
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