Nissan Frontier D22. Manual — part 696
TIMING BELT
EM-91
[VG33E and VG33ER]
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TIMING BELT
PFP:13028
Components
EBS00GTE
CAUTION:
●
Do not bend or twist timing belt.
●
After removing timing belt, do not turn crankshaft and camshaft separately because valves will
strike piston heads.
●
Make sure that timing belt, camshaft sprocket, crankshaft sprocket and belt tensioner are clean
and free from oil and water.
●
Installation should be carried out when engine is cold.
Removal
EBS00GTF
1.
Remove the engine under cover.
2.
Drain the engine coolant from the radiator. Refer to
MA-26, "DRAINING ENGINE COOLANT"
WBIA0101E
EM-92
[VG33E and VG33ER]
TIMING BELT
CAUTION:
Do not spill coolant on the engine drive belts.
3.
CO-30, "Removal and Installation"
4.
Remove the engine cooling fan and water pump pulley.
5.
Remove the following drive belts:
●
Power steering pump drive belt
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Compressor drive belt
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Alternator drive belt
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Supercharger drive belt (if equipped)
6.
Remove all of the spark plugs.
7.
Remove the distributor protector.
8.
Remove the compressor drive belt idler bracket.
9.
Disconnect the fresh-air intake tube from the rocker cover.
10. Disconnect the water hose from the thermostat housing.
11. Set the No. 1 piston at TDC on the compression stroke by rotat-
ing the crankshaft.
12. Remove the crankshaft pulley bolt.
13. Remove the crankshaft pulley using a suitable puller.
14. Remove the front upper and lower timing belt covers.
WBIA0188E
AEM223
TIMING BELT
EM-93
[VG33E and VG33ER]
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15. Align the timing belt sprockets to the timing marks on the engine.
●
Align the punchmark on the LH camshaft sprocket with the
punchmark on the timing belt rear cover.
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Align the punchmark on the crankshaft sprocket with the
alignment mark on the oil pump housing.
●
Temporarily install the crankshaft pulley bolt on the crank-
shaft, to rotate the crankshaft.
16. Loosen the timing belt tensioner nut, rotate the tensioner, then
remove the timing belt.
Inspection
EBS00GTG
Visually check the condition of the timing belt. Replace the timing belt as necessary.
SEM394CA
SEM240A
Item to check
Visual inspection
Cause
Tooth is broken/tooth root
is cracked.
●
Camshaft jamming
●
Distributor jamming
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Damaged camshaft/crankshaft oil seal
Back surface is cracked/
worn.
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Tensioner jamming
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Overheated engine
●
Interference with belt cover
SEM394A
SEM395A
EM-94
[VG33E and VG33ER]
TIMING BELT
BELT TENSIONER AND TENSIONER SPRING
1.
Check the belt tensioner for smooth turning.
2.
Check the condition of the tensioner spring.
3.
Replace the tensioner as necessary.
Installation
EBS00GTH
1.
Confirm that the No. 1 piston is set at TDC on the compression
stroke.
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Side surface is worn.
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Belt corners are worn
and round.
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Wicks are frayed and
coming out.
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Improper installation of belt
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Malfunctioning crankshaft pulley plate/timing belt
plate
●
Teeth are worn.
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Canvas on tooth face is
worn down.
●
Canvas on tooth is
fluffy, rubber layer is
worn down and faded
white, or weft is worn
down and invisible.
●
Poor belt cover sealing
●
Coolant leakage at water pump
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Camshaft not functioning properly
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Distributor not functioning properly
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Excessive belt tension
Oil, coolant, or water con-
taminated the belt.
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Poor oil sealing of each oil seal
●
Coolant leakage at water pump
●
Poor belt cover sealing
Item to check
Visual inspection
Cause
SEM396A
SEM397A
SEM558
SEM510EA
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