1999 NISSAN PRIMERA wheel

REAR OIL SEALNCEM0015S031. Remove flywheel or drive plate.
2. Remove rear oil seal.
IBe careful not to scratch rear oil seal retainer.
3. Apply new engine oil to new oil seal and install it using a suit-
able tool.
IInstall new oil seal in the direction shown.
SEM096F
SEM715A Engine
outside
Dust seal lip Oil seal lip Engine
inside
SEM097F Suitable tool
OIL SEALQG
Replacement (Cont'd)
EM-30

WARNING:
IPosition vehicle on a flat and solid surface.
IPlace chocks at front and back of rear wheels.
IDo not remove engine until exhaust system has com-
pletely cooled off, otherwise, you may burn yourself
and/or fire may break out in fuel line.
IBefore disconnecting fuel hose, release pressure.
Refer to EC section (ªFuel Pressure Releaseº, ªBASIC
SERVICE PROCEDUREº).
IBe sure to lift engine and transaxle in a safe manner.
IFor engines not equipped with engine slingers, attach
proper slingers and bolts described in PARTS CATALOG.
CAUTION:
IWhen lifting engine, be sure to clear surrounding parts.
Use special care near accelerator wire casing, brake lines
and brake master cylinder.
IWhen lifting the engine, always use engine slingers in a
safe manner.
IWhen removing drive shaft, be careful not to damage
grease seal of transaxle.
IBefore separating engine and transaxle, remove crank-
shaft position sensor (POS) from the cylinder block
assembly.
IAlways be extra careful not to damage edge of crankshaft
position sensor (POS), or signal plate teeth.
Engine cannot be removed separately from transaxle. Remove
engine with transaxle as an assembly.
REMOVALNCEM0022S011. Drain coolant from radiator and cylinder block. Refer to (LC)
section (ªChanging Engine Coolantº, ªENGINE MAINTE-
NANCEº).
2. Drain engine oil.
3. Remove battery.
4. Remove coolant reservoir tank and bracket.
5. Remove drive belts.
6. Remove generator and air conditioner compressor from
engine.
7. Remove power steering oil pump from engine and position
aside.
Power steering oil pump does not need to be disconnected
from power steering tubes.
ENGINE REMOVALQG
Removal and Installation (Cont'd)
EM-49

Components
1. Oil level gauge guide
2. Cylinder block
3. Rear oil seal retainer
4. Rear oil seal
5. Rear plate
6. Flywheel
7. Drain plug
8. Buffle plate
9. Top ring10. 2nd ring
11. Oil ring
12. Piston
13. Snap ring
14. Piston pin
15. Connecting rod
16. Connecting rod bearing
17. Connecting rod cap18. Key
19. Main bearing
20. Thrust bearing
21. Crankshaft
22. Main bearing cap
23. Knock sensor
24. Crankshaft position sensor (POS)
25. Signal plate
NEM331
7.2 - 10.8 (0.73 - 1.10, 63.4 - 95.5)
20.6 - 26.5
(2.1 - 2.7, 15 - 20)
O-ring
83.4 - 93.2 (8.5 - 9.5, 61 - 69)
6.28 - 8.34
(0.64 - 0.85, 55.6 - 73.8)
34.3 - 44.1
(3.50 - 4.50, 25.3 - 32.5)
6.3 - 8.3 (0.64 - 0.85, 55.6 - 73.8)
7.64 - 9.22 (0.78 - 0.94, 67.7 - 81.6)
: N´m (kg-m, in-lb)
: N´m (kg-m, ft-lb)
: Use Genuine Liquid Gasket or equivalent.
: Lubricate with new engine oil.
: Do not re-use.
46.1 - 52.0 (4.70 - 5.30, 34.0 - 38.3)
For installation of connecting rod cap, refer to ªAssemblyº.
CYLINDER BLOCKQG
Components
EM-52

Removal and InstallationNCEM0024CAUTION:
IWhen installing sliding parts such as bearings and
pistons, apply engine oil on the sliding surfaces.
IPlace removed parts, such as bearings and bearing caps,
in their proper order and direction.
IWhen installing connecting rod nuts and main bearing cap
bolts, apply new engine oil to threads and seating sur-
faces.
IDo not allow any magnetic materials to contact the signal
plate teeth of flywheel or drive plate, and rear plate.
IRemove the crankshaft position sensor (POS).
IBe careful not to damage sensor edges and single plate
teeth.
DisassemblyNCEM0025PISTON AND CRANKSHAFTNCEM0025S011. Place engine on a work stand.
2. Drain coolant and oil.
3. Remove timing chain.
Refer to EM-20.
4. Remove pistons with connecting rod.
IWhen disassembling piston and connecting rod, remove snap
ring first. Then heat piston to 60 to 70ÉC (140 to 158ÉF) or use
piston pin press stand at room temperature.
CAUTION:
IWhen piston rings are not replaced, make sure that piston
rings are mounted in their original positions.
IWhen replacing piston rings, if there is no punch mark,
install with either side up.
5. Loosen main bearing caps in numerical order as shown in fig-
ure.
6. Remove bearing caps, main bearings and crankshaft.
IBefore removing bearing caps, measure crankshaft end
play. Refer to EM-61.
IBolts should be loosened in two or three steps.
SEM927F KV10106500
ST0501S000
KV10113300
SEM877B OilPiston heater
SEM165DB Front
CYLINDER BLOCKQG
Removal and Installation
EM-53

REPLACEMENT OF CONNECTING ROD BUSHING
(Small end)
NCEM0026S101. Drive in small end bushing until it is flush with end surface of
rod.
Be sure to align the oil holes.
2. Ream the bushing so that clearance with piston pin is within
specification.
Clearance between connecting rod bushing and pis-
ton pin:
0.005 - 0.017 mm (0.0002 - 0.0007 in)
FLYWHEEL/DRIVE PLATE RUNOUTNCEM0026S12Runout (Total indicator reading):
Flywheel
Less than 0.15 mm (0.0059 in)
CAUTION:
IDo not allow any magnetic materials to contact the ring
gear teeth and rear plate.
IDo not resurface flywheel. Replace as necessary.
AssemblyNCEM0027PISTONNCEM0027S011. Install new snap ring on one side of piston pin hole.
2. Heat piston to 60 to 70ÉC (140 to 158ÉF) and assemble piston,
piston pin, connecting rod and new snap ring.
IAlign the direction of piston and connecting rod.
INumbers stamped on connecting rod and cap correspond
to each cylinder.
IAfter assembly, make sure connecting rod swings
smoothly.
3. Set piston rings as shown.
CAUTION:
IWhen piston rings are not replaced, make sure that piston
rings are mounted in their original position.
IInstall new piston rings either side up if there is no punch
mark.
SEM062A Align.
SEM931F Dial gauge
SEM166B
SEM932F Piston pin
grade number
Oil hole
Cylinder
number
FrontFront markPiston grade
number
SEM965E Punchmark side up
(if mark is present.)
CYLINDER BLOCKQG
Inspection (Cont'd)
EM-60

CAUTION:
IAfter removing timing chain, do not turn crankshaft and
camshaft separately, or valves will strike piston heads.
IWhen installing chain tensioner, oil seals, or other sliding
parts, lubricate contacting surfaces with new engine oil.
IApply new engine oil to bolt threads and seat surfaces
when installing camshaft sprocket and crankshaft pulley.
RemovalNLEM01261. Remove engine under cover.
2. Remove front RH wheel and engine side cover.
3. Drain coolant by removing cylinder block drain plug and lower
radiator hose. Refer to MA-29, ªChanging Engine Coolantº.
4. Remove drive belts and water pump pulley.
5. Disconnect the following parts:
IVacuum hoses
IWires
IHarness
IConnectors
6. Remove rocker cover bolts in numerical order.
7. Remove rocker cover.
8. Remove cylinder head outside bolts.
SEM029G Engine
front
Loosen in numerical order.Rocker cover
SEM287G Front cover
TIMING CHAINSR20DE
Components (Cont'd)
EM-76

18. Remove old liquid gasket from mating surfaces of rocker cover
and cylinder head.
19. Apply a continuous bead of liquid gasket to rocker cover gas-
ket and cylinder head as shown in the illustrations.
IUse Genuine RTV silicone sealant Part No. 999MP-A7007
or equivalent.
20. Install rocker cover and oil separator.
IBe sure to install washers between bolts and rocker cover.
ITightening procedure
STEP 1: Tighten bolts1-10-11-13-8inthat order.
STEP 2: Tighten bolts1-13inthat order.
:8-10N×m (0.8 - 1.0 kg-m, 69 - 87 in-lb)
21. Install the following parts:
ISpark plugs and leads
IWater pump pulley and drive belts.
For adjusting drive belt deflection, refer to MA-28, ªChecking
Drive Beltsº.
IRefit lower radiator hose and cylinder block drain plug.
IRefill with engine coolant. Refer to MA-29, ªChanging Engine
Coolantº.
IFront RH wheel
IEngine under cover
22. Connect the following:
IVacuum hoses
IWire harnesses and connectors
BEM006 Engine
front
Unit: mm (in)3 (0.12)(0.39)
(0.39)
SEM051G 3mm
(0.12 in) dia.
SEM052G Engine
front
Tighten in numerical order.Rocker cover
TIMING CHAINSR20DE
Installation (Cont'd)
EM-83

VALVE OIL SEAL
1. Remove accelerator cable.
2. Remove rocker cover and oil separator.
3. Remove camshafts and sprockets.
Refer to ªRemovalº in ªCYLINDER HEADº (EM-87).
4. Remove spark plugs.
5. Install air hose adapter into spark plug hole and apply air
pressure to hold valves in place. Apply a pressure of 490 kPa
(4.9 bar, 5 kg/cm
2, 71 psi).
6. Remove rocker arm, rocker arm guide and shim.
7. Remove valve spring with Tool.
Piston concerned should be set at TDC to prevent valve from
falling.
8. Remove valve oil seal.
9. Apply engine oil to new valve oil seal and install it with Tool.
FRONT OIL SEAL
1. Remove the following parts:
IEngine undercover
IFront RH wheel and engine side cover
IDrive belts
ICrankshaft pulley
2. Remove front oil seal.
Be careful not to scratch front cover.
SEM077D
SEM604E Compressor assemblyAttachment
SEM994C
SEM358E
10.7 mm
(0.421 in)
KV10115600
SEM997C
OIL SEAL REPLACEMENTSR20DE
EM-84