2001 NISSAN PICK-UP Repair Manual

11. Install lower oil pan.
a. Use a scraper to remove old liquid gasket from mating sur-faces.
+ Also remove old liquid gasket from mating surface of
upper oil pan.
b. Apply a continuous bead of liquid gasket to mating surface of lower oil pan.
+ Use Genuine Liquid Gasket or equivalent.
+ Be sure liquid gasket is 3.5 to 4.5 mm (0.138 to 0.177 in)
wide.
+ Assembly should be done within 5 minutes after coating.
c. Install lower oil pan.
+ Tighten in numerical order shown in the figure.
+ Wait at least 30 minutes before refilling engine oil.
6. Install in the reverse order of removal.
SEM857G
SEM159F
SEM858G
SEM851G
SEM852G
OILPAN YD25DDTi
Installation (Cont'd)
EM-3020

Secondary Timing Chain
CAUTION:
+After removing timing chain, do not turn crankshaft and
camshaft separately, or valves will strike piston heads.
+When installing camshafts, chain tensioners, oil seals,
or other sliding parts, lubricate contacting surfaces with
new engine oil.
+Apply new engine oil to bolt threads and seat surfaces
when installing camshaft sprockets, crankshaft pulley,
and camshaft brackets.
+Do not spill engine coolant on drive belts.
REMOVAL
+For preparative work for removing/installing secondary timing
chain to remove/install fuel injection pump, refer to EC
section, ªElectronic control fuel injection pumpº.
+To prepare for removing/installing secondary timing chain to
remove/install camshaft, refer to EM-3047, ªCAMSHAFTº.
1. Drain engine oil.
2. Drain coolant by removing cylinder block drain plugs. Refer
to LC section, ªChanging Engine Coolantº.
3. Remove EGR guide tube.
4. Remove radiator upper and lower hoses.
5. Remove radiator shroud and radiator. Refer to LC section,
ªREMOVAL AND INSTALLATIONº, ªRadiatorº.
JEM859G
TIMING CHAINYD25DDTi
EM-3021

6. Remove front chain case.
+Move power steering fluid reservoir tank from the bracket.
+Loosen fixing bolts in the reverse order of that shown in the
figure and remove them.
+Remove all bolts with the rubber washer as space is limited
for pulling them out.
CAUTION:
+While front chain case is removed, cover openings to
prevent entry of foreign material into engine.
+Do not remove two mass dampers on the back of cover.
7. Set the No. 1 piston to TDC on its compression stroke.
+Turn crankshaft pulley clockwise so that the alignment mark
(punched mark) on each camshaft sprocket is positioned as
shown in the figure.
+No position indicator is provided on the crankshaft pul-
ley.
+When installing, color coded links on the secondary tim-
ing chain can be used as alignment marks. Marking may
not be necessary for removal; however, make alignment
marks as required because the alignment mark on fuel
injection pump sprocket may not be easy to see.
8. Remove chain tensioner.
a. Push the plunger of chain tensioner and keep it pressed with
a push pin.
b. Using a hexagon-head wrench [face to face: 5 mm (0.20 in),
SST], remove bolts to remove chain tensioner.
JEM121G
SBIA0189E
SEM515G
JEM124G
SBIA0227E
TIMING CHAINYD25DDTi
Secondary Timing Chain (Cont'd)
EM-3022

9. Remove timing chain slack guide.
+Using a hexagon-head wrench [face to face: 6 mm (0.24 in),
SST], remove bolt to remove timing chain slack guide.
10. Remove timing chain tension guide.
11. Remove secondary timing chain.
+Timing chain alone can be removed without removing
sprockets.
INSPECTION
Check for cracks and excessive wear at roller links. Replace
chain if necessary.
INSTALLATION
1. Install secondary timing chain.
+When installing, match the alignment marks on sprockets
with color coded alignment marks (colored links) on the
chain.
2. Install timing chain tension guide.
+The upper bolt has a longer shank than the lower bolt.
SBIA0228E
JEM127G
SEM984C
JEM128G
TIMING CHAINYD25DDTi
Secondary Timing Chain (Cont'd)
EM-3023

3. Using a hexagon-head wrench [face to face: 6 mm (0.24 in),
SST], install timing chain slack guide.
4. Install chain tensioner.
a. Push the plunger of the chain tensioner. While holding it with
a push pin, install the chain tensioner.
b. Using a hexagon-head wrench [face to face: 5 mm (0.20 in),
SST], tighten bolts.
c. Pull out the push pin, etc. holding the plunger.
+Check again that the alignment marks on the sprockets
and the colored alignment marks on the timing chain are
aligned.
5. Install front chain case.
a. Install tension guide on the back surface of front chain case.
+Hold front chain case vertically when installing. Tension
guide may come off if front chain case is tilted.
b. Apply specified liquid gasket (Refer to EM-3003, ªLiquid Gas-
ket
Application Procedureº.) on both ends of arched area (loca-
tions where rear chain case is adjoined) as shown in the fig-
ure.
c. Install new chain case gasket to chain case groove.
d. Install front chain case.
+When installing, align dowel pin on oil pump case with the pin
hole.
+Install all bolts with the rubber washer to the front chain case.
e. Tighten fixing bolts in the numerical order shown in the fig-
ure.
f. After tightening all the bolts, re-tighten in the No. 1, 2, and 6
bolts.
SBIA0228E
SBIA0227E
SBIA0189E
JEM129G
JEM121G
TIMING CHAINYD25DDTi
Secondary Timing Chain (Cont'd)
EM-3024

6. Hereafter, install in the reverse order of removal.
TIMING CHAINYD25DDTi
Secondary Timing Chain (Cont'd)
EM-3025

Primary Timing Chain
SEM860G
TIMING CHAINYD25DDTi
EM-3026

CAUTION:
+After removing timing chain, do not turn crankshaft and
camshaft separately, or valves will strike piston heads.
+When installing camshafts, chain tensioners, oil seals,
or other sliding parts, lubricate contacting surfaces with
new engine oil.
+Apply new engine oil to bolt threads and seat surfaces
when installing camshaft sprockets, crankshaft pulley,
and camshaft brackets.
+Do not spill engine coolant on drive belts.
REMOVAL
1. Remove charge air cooler and bracket.
2. Remove rocker cover. Refer to EM-3045, ªRemoval and
Installationº, ªROCKER COVERº.
3. Remove EGR guide tube.
4. Remove radiator shroud and radiator. Refer to LC section,
ªREMOVAL AND INSTALLATIONº, ªRadiatorº.
5. Remove idler pulley, idler pulley bracket and drive belts.
6. Remove upper and lower oil pans. Refer to EM-3015,
ªRemoval
and Installationº, ªOIL PANº.
7. Remove injection tube.
Refer to EC section, ªInjection Tube and Injection Nozzleº.
8. Remove secondary timing chain and associated parts.
Refer to EM-3021, ªSecondary Timing Chainº.
9. When removing rear chain case, remove camshaft sprock-
ets.
Refer to EM-3047, ªCAMSHAFTº.
10. Remove crankshaft pulley.
a. Hold crankshaft pulley with the pulley holder (SST).
b. Loosen crankshaft pulley fixing bolt and pull out the bolt
approximately 10 mm (0.39 in).
c. Using pulley puller (SST), remove crankshaft pulley.
+Use two M6 (0.24 in) bolts with approx. 60 mm (2.36 in)
shank length for securing crankshaft pulley.
JEM131G
JEM132G
TIMING CHAINYD25DDTi
Primary Timing Chain (Cont'd)
EM-3027