Page 283 of 2053
GENERAL ENGINE INFORMATION 1A2 -- 11
D AEW OO M Y_2000
CYLINDER PRESSURE LEAKAGE TEST
3 Engine Oil Filler Cap
5 Vibration Damper6 Cylinder Pressure Leakage Tester with
Connecting Hose
Permissible Pressure Leakage
At Whole EngineMax. 25 %
At Valve and Cylinder Head GasketMax. 10 %
At Piston and Piston RingMax. 20 %
Cylinder Number By Mark On Vibration Damper At TDC
TDC MarkOT (TDC)UT (BDC : 180°)
Cylinder Number1, 42, 3
Universal Tool
Cylinder Pressure Leakage TesterBosch, EFAW 210A
Sun, CLT 228
Page 319 of 2053
1B2 -- 26 M161 ENGINE MECHANICAL
D AEW OO M Y_2000
CYLINDER HEAD COVER
1 Spark Plug Cover
2 Spark Plug Connector
3 Bolt(M6X45:4pieces,M6X60:6pieces)
9--11 NSm (80-- 97 lb-in) .....................4 Cylinder Head Cover
5 Gasket Replace...........................
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M161 ENGINE MECHANICAL 1B2 -- 27
D AEW OO M Y_2000
Removal & Installation Procedure
1. Remove the intake air duct.
Installation Notice
Tightening Torque
9--11NSm (80 -- 97 lb-in)
2. Remove the spark plug cover.
Installation Notice
Tightening Torque
9--11NSm (80 -- 97 lb-in)
Notice:Release 3 screws from the spark plug cover and
remove the cover for M161 Engine coil.
3. Remove the spark plug connector and ignition cable.
4. Unscrew the bolts (3) and remove the head cover and
the gasket.
Installation Notice
Tightening Torque
9--11NSm (80 -- 97 lb-in)
Notice:Replace the gasket with a new one if necessary.
5. Installation should follow the removal procedure in
the reverse order.
6. Check for oil leaks by operating the engine.
Page 323 of 2053
1B2 -- 30 M161 ENGINE MECHANICAL
D AEW OO M Y_2000
CYLINDER HEAD
Preceding Work: Removal of cylinder head cover
Removal of cylinder head front cover
Removal of intake manifold
Removal of cylinder head lower line (intake manifold side)
1 Cylinder Head Bolt (M12 X 100, 10 pieces)
1ststep55NSm (41 lb-ft) ...................
2nd step 90°rotation added
3rdstep90°rotation added
3 Bolt (M8 X 35, 4 pieces)
22.5-- 27.5 NSm (16.6-- 20.3 lb-ft) .............4 Camshaft Bearing cap
5 Cylinder Head
6 Gasket Replace...........................
7 Dowel Sleeve Note........................
Page 326 of 2053
M161 ENGINE MECHANICAL 1B2 -- 33
D AEW OO M Y_2000
10. Remove the cylinder head bolts in the reverse order
of the numerics (No.10→No.1) using allen wrench
socket617589001000.
Installation Notice
Tighten the bolts as numerical order with specified
torque (No.1→No.10).
1st step: 55 NSm (41 lb-ft)
Tightening Torque2nd step: + 90°ggq
3rd step: + 90°
Notice:Operate during engine cooling.
11. Remove the No. 1 bearing cap of the exhaust cam-
shaft.
Installation Notice
Tightening Torque
22.5 -- 27.5 NSm
(16.6 -- 20.3 lb-ft)
12. Carefully remove the cylinder head.
13. Check the cylinder head mating surface and clean
the crankcase head bolt mounting hole.
14. Replace the cylinder head gasket with new one.
15. Check the length of the cylinder head bolt.
Installation Notice
Length(L)When New 100 mmLength(L)Max. Length 105 mm
Notice:Replace the bolt if the measured length exceed
the max. length.
16. Installation should follow the removal procedure in
the reverse order.
Page 364 of 2053
M161 ENGINE MECHANICAL 1B2 -- 71
D AEW OO M Y_2000
Sectional View
1 Screw Plug
2 Ball (Nonreturn Valve)
3 Compression Spring
4 Ball Guide
5 Seal (Aluminum)
6 Filler Pin
7 Compression Spring
8 Snap Ring
9 Thrust Pin
10 Ball (Nonreturn Valve)
11 Compression Spring
12 Thrust Piece13 Chain Tensioner Housing
14 Seal
15 Timing Gear Case Cover
16 Cylinder Head
17 Bolt / Washer
18 Tensioning Rail
19 Cylinder Head Gasket
20 Timing Chain
21 Tensioning Rail Base (Sliding Surface)
A Oil Supply Hole
B Chain Tensioner Oil Storage Hole
Page 370 of 2053
M161 ENGINE MECHANICAL 1B2 -- 77
D AEW OO M Y_2000
TENSIONING RAIL
Preceding Work: Removal of cylinder head
1 Sliding Rail Pin
2 Sliding Rail3 Timing Gear Case Cover
Removal & Installation Procedure
1. Remove the timing gear case cover (3).
Notice:Be careful not to damage the gasket.
2. Remove the sliding rail (1) from the sliding rail pin (2).
Notice
DReplace the plastic guide (2) if it is damaged.
DFor installation, exactly align the plastic guide (2) with
the sliding rail (1).
3. Installation should follow the removal procedure in
the reverse order.
Page 548 of 2053
GENERAL ENGINE INFORMATION 1A3 -- 13
D AEW OO M Y_2000
CYLINDER PRESSURE LEAKAGE TEST
1 Connector
2 Connection Piece
3 Connection Hose
Permissible Pressure Leakage (Engine at Normal Operating Temperature of 80_C)
At Whole EngineMax. 25 %
At Valve and Cylinder Head GasketMax. 10 %
At Piston and Piston RingMax. 20 %
Commercial Tools
Cylinder Pressure Leakage testerBOSCH, EFAW 210 A or SUN CLT 228
Connection PieceBOSCH order no. 1 687 010 016