Page 1617 of 2267
9. Set No. 1 piston at TDC of its compression stroke.
IRotate crankshaft until mating mark on camshaft sprocket
is set at position indicated in figure.
10. Remove oil pans.
Refer to EM-70, ªOil Panº.
11. Remove oil strainer.
12. Temporarily install center member to support engine.
13. Remove crankshaft pulley.
14. Remove generator.
15. Remove A/C compressor and position it to the side.
16. Remove A/C bracket.
17. Remove generator bracket.
SEM983C
SEM695DA
SEM038G
SEM980C Suitable puller
TIMING CHAINSR20DE
Removal (Cont'd)
EM-77
Page 1618 of 2267
18. Set a suitable transmission jack under main bearing beam.
19. Remove RH engine mounting.
20. Remove RH engine mounting bracket.
21. Remove oil pump drive spacer.
CAUTION:
Be careful not to damage oil pump drive spacer and front oil
seal.
22. Remove front cover.
CAUTION:
IBe careful not to tear or damage the cylinder gasket.
IInspect for oil leakage at front oil seal. Replace seal if oil
leak is present.
23. Remove chain tensioner.
SEM039G Engine
front
Transmission
jack
SEM040G RH engine mounting
SEM041G RH engine mounting bracket
Water pump
SEM721E
.SEM032G Chain
tensioner
TIMING CHAINSR20DE
Removal (Cont'd)
EM-78
Page 1619 of 2267
24. Remove timing chain guides.
25. Remove camshaft sprockets.
IFor retiming, apply paint mark to timing chain matched
with mating marks of camshaft sprockets.
26. Remove timing chain and crankshaft sprocket.
InspectionNLEM0127Check for cracks and excessive wear at roller links. Replace
chain if necessary.
InstallationNLEM01281. Install crankshaft sprocket on crankshaft.
IMake sure mating marks on crankshaft sprocket face front
of engine.
2. Position crankshaft so that No. 1 piston is set at TDC and key
way is at 12 oclock. Fit timing chain on crankshaft sprocket,
aligning the mating marks.
SEM982CA
SEM034G
SEM984C
SEM470E Engine
frontCrankshaft
side
Crankshaft sprocket
SEM985C
TIMING CHAINSR20DE
Removal (Cont'd)
EM-79
Page 1620 of 2267
IMating mark color on timing chain.
1: Golden
2, 3: White
3. Install timing chain and timing chain guides.
4. Install camshaft sprockets and timing chain on them.
Line up mating marks on timing chain with mating marks
on camshaft sprockets.
ILock camshafts as shown in figure and tighten to specified
torque.
: 137 - 157 N×m (14.0 - 16.0 kg-m, 101 - 116 ft-lb)
Apply new engine oil to threads and seating surfaces of cam-
shaft sprocket bolts before installing them.
SEM500E 20 rollers
Mating mark
48 rollers
Mating mark 56 rollers Mating mark
SEM982CA
SEM048G Mating mark
Mating mark
.RH camshaft sprocket.LH camshaft sprocket Mating mark
Mating mark
SEM049G
TIMING CHAINSR20DE
Installation (Cont'd)
EM-80
Page 1621 of 2267
5. Install chain tensioner.
Make sure the camshaft sprockets are tightened completely.
Press cam stopper down and press-in sleeve until hook can
be engaged on pin. When tensioner is bolted in position the
hook will release automatically. Make sure arrow A points
toward engine front.
6. Use a scraper to remove old liquid gasket from mating surface
of front cover.
IAlso remove old liquid gasket from mating surface of cyl-
inder block.
7. Apply a continuous bead of liquid gasket to front cover.
Also apply liquid gasket to matching surface to cylinder head
gasket.
IUse Genuine RTV silicone sealant part No. 999MP-A7007
or equivalent.
Be sure to install new front oil seal in the right direction.
Refer to EM-84, ªFRONT OIL SEALº.
8. Install oil pump drive spacer.
9. Install front cover.
SEM990C
SEM991C
SCL491A
BEM010 2.0 - 3.0 mm
Never apply liquid
gasket to this
groove.
SEM721E
TIMING CHAINSR20DE
Installation (Cont'd)
EM-81
Page 1622 of 2267
IWipe off excessive liquid gasket.
10. Install cylinder head outside bolts.
11. Install RH engine mounting and bracket.
12. Install generator bracket and generator.
13. Install A/C compressor bracket and compressor.
14. Install crankshaft pulley.
15. Set No. 1 piston at TDC of its compression stroke.
16. Install oil strainer.
17. Install oil pans.
Refer to EM-70, ªOil Panº.
SEM042G Wipe off liquid
gasket
SEM287G Front cover
SEM040G RH engine mounting
.SEM073D Crankshaft pulley
SEM038G
TIMING CHAINSR20DE
Installation (Cont'd)
EM-82
Page 1623 of 2267

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
Page 1624 of 2267
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