1D
Timing Chain and Chain Tensioner Removal and Installation
Reference: Timing Chain and Chain Tensioner Components:M13A
Without VVT
Removal
CAUTION:
After timing chain is removed, never turn crankshaft and camshafts independently more than its allowable turning range described in “Installation”.
If turned, interference may occur between piston and valves and valves themselves, and parts related to piston and valves may be damaged.
1) Remove timing chain cover referring to Timing Chain Cover Removal and Installation:M13A .
2) Align both intake and exhaust camshaft timing sprocket marks (1) with notches (2) of cylinder head respectively by turning crankshaft.
3) Remove timing chain tensioner adjuster assembly (3).
4) Remove timing chain tensioner (4).
5) Remove timing chain No.1 guide (5).
6) Remove timing chain (6) with crankshaft timing sprocket (7).
Installation
Reference: Timing Chain and Chain Tensioner Inspection:M13A
CAUTION:
After timing chain is removed, never turn crankshaft and camshafts independently more than such an extent (“a”, “b”) as shown in the figure.
If turned, interference may occur between piston and valves and valves themselves, and parts related to piston and valves may be damaged.
1) Check that match marks (1) on intake and exhaust camshaft timing sprockets are in match with notches (2) on cylinder head as shown in the figure.
2) Set key (3) and turn crankshaft to position key on upside of crankshaft.
“a”: 90°
“b”: 15°
4. Camshaft (IN and EX) allowable turning range.
By marks on camshaft timing sprocket within 15° from notches on cylinder head on both right and left.
5. Crankshaft allowable turning range.
By key on crankshaft, within 90° from top on both right and left.
3) Install timing chain by aligning dark blue plate (1) of timing chain and mark (2) on camshaft timing sprocket and then aligning dark blue plate (3) and triangle mark (4) as shown in the figure.
4) Fit crankshaft timing sprocket to timing chain by aligning gold plate (5) of timing chain and mark (6) on crankshaft timing sprocket. Then install crankshaft timing sprocket fitted with chain to crankshaft.
5) Apply engine oil to sliding surface of timing chain No.1 guide (1) and install it as shown in the figure.
Tighten guide bolts to specified torque.
Tightening torque
Timing chain No.1 guide bolt ( a ): 9 N·m ( 0.9 kg-m, 6.5 lb-ft)
6) Apply engine oil to sliding surface of chain tensioner (1) and install chain tensioner and spacer.
Tighten tensioner bolt to specified torque.
Tightening torque
Timing chain tensioner bolt ( a ): 22 N·m ( 2.2 kg-m, 16.0 lb-ft)
7) Check that match marks (1) on intake and exhaust camshaft timing sprockets are in match with dark blue plates (2) of timing chain and match mark (3) on crankshaft timing sprocket is in match with gold plate (4) of timing chain.
8) Screw in plunger (1) by turning timing chain tensioner adjuster (2) in arrow direction and install a retainer (3) (wire) to hold plunger in place.
9) Install timing chain tensioner adjuster assembly (1) with a retainer (2).
Tighten adjuster bolts to specified torque and then remove a retainer from chain tensioner adjuster assembly.
Tightening torque
Timing chain tensioner adjuster bolt ( a ): 11 N·m ( 1.1 kg-m, 8.0 lb-ft)
10) Apply engine oil to timing chain and then turn crankshaft clockwise by 2 revolutions and check that match marks (1) on intake and exhaust camshaft timing sprockets are in match with notches (2) on cylinder head and key (3) is on upside of crankshaft as shown in the figure.
If each mark of timing chain and each match mark are no matches, adjust each sprockets and timing chain.
11) Install timing chain cover referring to Timing Chain Cover Removal and Installation:M13A .
12) Perform Steps 3) to 8) of “Installation” of Timing Chain Cover Removal and Installation:M13A .
With VVT
Reference: Timing Chain and Chain Tensioner Components:M13A
Removal
CAUTION:
After timing chain is removed, never turn crankshaft and camshafts independently more that its allowable turning range described in “Installation”.
If turned, interference may occur between piston and valves and valves themselves, and parts related to piston and valves may be damaged.
1) Remove timing chain cover referring to Timing Chain Cover Removal and Installation:M13A .
2) Align both intake and exhaust camshaft timing sprocket marks (1) with notches (2) of cylinder head respectively by turning crankshaft.
3) Remove timing chain tensioner adjuster assembly (3).
4) Remove timing chain tensioner (4).
5) Remove timing chain No.1 guide (5).
6) Remove timing chain (6) with crankshaft timing sprocket (7).
Installation
CAUTION:
After timing chain is removed, never turn crankshaft and camshafts independently more than such an extent (“a”, “b”) as shown in figure.
If turned, interference may occur between piston and valves and valves themselves, and parts related to piston and valves may be damaged.
1) Check that match marks (1) on intake and exhaust camshaft timing sprockets are in match with notches (2) on cylinder head as shown in figure.
2) Check that key on crankshaft timing sprocket is in match with notch on cylinder block as shown in figure.
“a”: 90° 5. Crankshaft allowable turning range.
By key on crankshaft, within 90° from top on both right and left.
“b”: 15° 4. Camshaft (IN and EX) allowable turning range.
By marks on camshaft timing sprocket within 15° from notches on cylinder head on both right and left.
3) Install timing chain by aligning dark blue plate (1) of timing chain and triangle mark (2) on camshaft timing sprocket as shown in figure.
4) Fit crankshaft timing sprocket to timing chain by aligning gold plate (3) of timing chain and circle mark (4) on crankshaft timing sprocket. Then install crankshaft timing sprocket fitted with chain to crankshaft.
[A]: View A
5) Apply engine oil to sliding surface of timing chain No.1 guide (1) and install it as shown in figure.
Tighten guide bolts to specified torque.
Tightening torque
Timing chain No.1 guide bolts ( a ): 9 N·m ( 0.9 kg-m, 6.5 lb-ft)
6) Apply engine oil to sliding surface of chain tensioner (1) and install chain tensioner and spacer.
Tighten tensioner bolt to specified torque.
Tightening torque
Timing chain tensioner bolt ( a ): 22 N·m ( 2.2 kg-m, 16.0 lb-ft)
7) Check that match marks (1) on intake and exhaust camshaft timing sprockets are in match with marking of timing chain (2) and match mark on crankshaft timing sprocket (3) are in with marking of timing chain (4).
[A]: View A
8) Screw in plunger (1) by turning timing chain tensioner adjuster (2) in arrow direction and install a retainer (3) (wire) to hold plunger in place.
9) Install timing chain tensioner adjuster assembly (1) with a retainer (2).
Tighten adjuster bolts to specified torque and then remove a retainer from chain tensioner adjuster assembly.
Tightening torque
Timing chain tensioner adjuster bolts ( a ): 11 N·m ( 1.1 kg-m, 8.0 lb-ft)
10) Apply engine oil to timing chain, and then turn crankshaft clockwise by 2 revolutions and check that match marks (1) on intake and exhaust camshaft timing sprockets are in match with notches (2) on cylinder head and key (3) is in match with notch (4) on cylinder block as shown in figure.
If each marking chain and each match mark are no matches, adjust each sprockets and timing chain.
11) Install timing chain cover referring to Timing Chain Cover Removal and Installation:M13A .
12) Perform Steps 12) to 17) of “Installation” of Timing Chain Cover Removal and Installation:M13A .