Nissan Frontier. Manual - 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

Chain Tensioner)"

.

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

INFOID:0000000009478134

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 

EM-

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