Nissan Frontier. Manual — part 226
WATER PUMP
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3. Remove coolant reservoir hose from the radiator.
4. Remove engine cooling fan (Motor driven type). Refer to
CO-48, "Removal and Installation (Motor driven
.
5. Remove engine cooling fan (Crankshaft driven type) and fan bracket. Refer to
Installation (Crankshaft driven type)"
6. Set No. 1 cylinder at TDC.
• Rotate crankshaft pulley clockwise to align timing mark (A)
(grooved line without color) with timing indicator (B).
7. Remove chain tensioner cover and water pump cover from front
timing chain case, using Tool.
8. 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. Turn crankshaft pulley clockwise so that timing chain on the tim-
ing chain tensioner (primary) side is loose.
AWBIA0719ZZ
Tool number
: KV10111100 (J-37228)
PBIC2662E
PBIC2835E
PBIC2834E
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WATER PUMP
e. Remove bolts and remove timing chain tensioner (primary).
CAUTION:
Be careful not to drop bolts inside timing chain case.
9. Remove water pump as follows:
a. Remove three water pump bolts. Secure a gap between water
pump gear and timing chain, by turning crankshaft pulley coun-
terclockwise until timing chain looseness on water pump
sprocket becomes maximum.
b. Screw M8 bolts [pitch: 1.25 mm (0.049 in) length: approx. 50
mm (1.97 in)] into water pump upper and lower bolt holes until
they reach timing chain case. Then, alternately tighten each bolt
for a half turn, and pull out water pump.
CAUTION:
• Place a suitable shop cloth below the water pump hous-
ing to prevent any engine coolant from dripping into the
timing chain case.
• Pull water pump straight out while preventing vane from
contacting socket in installation area.
• Remove water pump without causing sprocket to contact
timing chain.
c.
Remove M8 bolts and O-rings from water pump.
CAUTION:
• Do not disassemble water pump.
• Do not reuse O-rings.
INSPECTION AFTER REMOVAL
• Check for badly rusted or corroded water pump body assembly.
• Check for rough operation due to excessive end play.
• Replace water pump, if necessary.
INSTALLATION
1. Install new O-rings to water pump.
CAUTION:
Do not reuse O-rings.
NOTE:
PBIC2836E
PBIC2863E
JLC357B
SLC943A
WATER PUMP
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• Apply engine oil to O-rings.
• Locate O-ring with white paint mark to engine front side.
2. Hold timing chain to the side (
) and install water pump (
).
CAUTION:
Do not allow timing chain case to pinch O-rings when
installing water pump.
• Make sure that timing chain and water pump sprocket are
engaged.
• Tighten water pump bolts alternately and evenly.
3. Remove dust and foreign material completely from installation area of timing chain tensioner (primary)
and rear timing chain case.
4. Turn crankshaft pulley approximately 20
° clockwise so that tim-
ing chain on the timing chain tensioner (primary) side is loose.
5. Install timing chain tensioner (primary) with its stopper pin inserted.
CAUTION:
Be careful not to drop bolts inside timing chain case.
6. Remove stopper pin.
• Make sure again that timing chain and water pump sprocket
are engaged.
7. Install chain tensioner cover and water pump cover.
PBIC2837E
PBIC1058E
PBIC0848E
PBIC2838E
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WATER PUMP
a. Before installing, remove all traces of old liquid gasket from mat-
ing surface of water pump cover and chain tensioner cover
using scraper. Also remove traces of old liquid gasket from the
mating surface of front timing chain case.
b. Apply a continuous bead of liquid gasket, to mating surface of
chain tensioner and water pump cover, using suitable tool.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-21, "Recommended Chemical Products and Sealants"
.
CAUTION:
• Installation should be done within 5 minutes after apply-
ing liquid gasket.
• Do not fill the engine with oil for at least 30 minutes after
the components are installed to allow the sealant to cure.
c.
Tighten bolts to specified torque. Refer to
.
8. Install water drain plug (front) (1) on water pump side of cylinder
block.
• Apply liquid gasket to the thread of water drain plug (front).
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-21, "Recommended Chemical Products and Sealants"
.
9. Installation of the remaining components is in the reverse order of removal.
• After installation refill engine coolant and check for leaks. Refer to
CO-40, "Changing Engine Coolant"
CAUTION:
Do not spill coolant in the engine compartment. Use a shop cloth to absorb coolant.
• After starting engine, let idle for three minutes, then rev engine up to 3,000 rpm under no load to purge
air from the high-pressure chamber of the chain tensioner. The engine may produce a rattling noise.
This indicates that air still remains in the chamber and is not a matter of concern.
INSPECTION AFTER INSTALLATION
• Check for engine coolant leaks. Refer to
• Start and warm up engine. Visually check for engine coolant leaks. Repair as necessary.
SLC446B
PBIC2663E
Water drain plug (front)
: 9.8 N·m (1.0 kg-m, 87 in-lb)
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