Nissan Frontier. Instruction — part 749
TIMING CHAIN TENSIONER
EM-185
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11. Remove drive belt. Refer to
EM-129, "Removal and Installation"
12. Remove drive belt auto-tensioner. Refer to
EM-130, "Drive Belt Auto-Tensioner and Idler Pulley"
13. Remove chain tensioner cover.
14. Remove timing chain tensioner (primary) as follows:
a. Loosen clip of timing chain tensioner (primary), and release
plunger stopper (1).
b. Depress plunger into tensioner body by pressing slack guide (2).
c. Keep slack guide pressed and insert stopper pin through the
tensioner body hole and plunger groove (3) to hold plunger in.
• Use stopper pin included with Tool J-50246.
d. Remove timing chain tensioner bolts and remove timing chain
tensioner (primary).
CAUTION:
Be careful not to drop timing chain tensioner bolts inside
timing chain case.
INSTALLATION
Installation is in the reverse order of removal.
• When installing timing chain tensioner (primary), push in plunger and keep it pressed in with stopper pin.
• Remove any dirt and foreign materials completely from the back and the mounting surfaces of primary tim-
ing chain tensioner.
• After installation, pull out stopper pin.
Removal and Installation (Secondary Timing Chain Tensioner)
INFOID:0000000009478132
REMOVAL
1. Remove the timing chains (primary) and (secondary). Refer to
EM-176, "Removal and Installation"
.
2. Remove the rocker covers. Refer to
EM-158, "Removal and Installation"
3. Remove the camshaft brackets (No. 1). Refer to
EM-193, "Removal and Installation"
4. Remove the secondary timing chain tensioners.
INSTALLATION
Installation is in the reverse order of removal.
Removal and Installation (Secondary Timing Chain Tensioner Shoe)
INFOID:0000000009478133
REMOVAL
1. Remove the timing chains (secondary). Refer to
EM-185, "Removal and Installation (Secondary Timing
.
PBIC2835E
PBIC2836E
EM-186
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TIMING CHAIN TENSIONER
2. Remove the secondary timing chain tensioner shoe by evenly
prying at base of shoe with suitable tool as shown.
INSTALLATION
1. Install new secondary timing chain tensioner shoe using Tool (A)
as shown.
• Tighten the bolt until the secondary timing chain tensioner
shoe is fully seated on the secondary timing chain tensioner.
CAUTION:
Do not overtighten bolt.
2. Installation of the remaining components is in the reverse order
of removal.
ALBIA0676ZZ
Tool number
: — (J-50246)
ALBIA0677ZZ
REAR TIMING CHAIN CASE
EM-187
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REAR TIMING CHAIN CASE
Exploded View
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Removal and Installation
INFOID:0000000009478135
CAUTION:
• After removing timing chain, do not turn the crankshaft and camshaft separately, or the valves will
strike the pistons.
• Before removing the upper oil pan, remove the crankshaft position sensor (POS).
• Be careful not to damage sensor edges.
REMOVAL
1. Remove oil pan (lower) and (upper). Refer to
EM-151, "Removal and Installation"
.
2. Remove front timing chain case. Refer to
EM-168, "Removal and Installation"
.
3. Remove timing chains and related components. Refer to
EM-176, "Removal and Installation"
and
185, "Removal and Installation (Secondary Timing Chain Tensioner)"
.
4. Remove water pump, if necessary. Refer to
CO-50, "Removal and Installation"
5. Remove rear timing chain case as follows:
AWBIA0860GB
1.
Rear timing chain case
2.
Water drain plug (front)
3.
O-rings
4.
Cylinder block
A.
Refer to installation
EM-188
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REAR TIMING CHAIN CASE
a. Loosen and remove bolts using power tool in reverse order as
shown.
b. Cut liquid gasket using Tool and remove rear timing chain case.
CAUTION:
Do not damage the mating surfaces.
CAUTION:
• Do not remove plate metal cover of oil passage.
• After removal, handle rear timing chain case carefully so
it does not twist, bend, or warp under a load.
6. Remove O-rings from cylinder head and camshaft bracket (No.
1).
CAUTION:
Do not reuse O-rings.
7. Remove O-rings from cylinder block.
CAUTION:
Do not reuse O-rings.
Tool number
: KV10111100 (J-37228)
PBIC2921E
PBIC2922E
SBIA0496E
PBIC0788E
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