INSPECTION
PROCEDURE
1. INSPECT NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY
(a) Turn the roller by hand to check that it turns smoothly. HINT: If the roller does not turn smoothly, replace the No. 1 valve rocker arm sub-assembly. | |
2. INSPECT VALVE LASH ADJUSTER ASSEMBLY
NOTICE:
(a) Place the valve lash adjuster assembly into a container filled with engine oil.
(b) Insert the tip of SST into the plunger and use the tip to press down on the check ball inside the plunger. SST: 09276-75010 |
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(c) Squeeze SST and the valve lash adjuster assembly together to move the plunger up and down 5 to 6 times.
(d) Check the movement of the plunger and bleed any air.
OK:
Plunger moves up and down.
NOTICE:
When bleeding the air from the high-pressure chamber, make sure that the tip of SST is pressing the check ball as shown in the illustration. If the check ball is not pressed, air will not bleed.
(e) After bleeding the air, remove SST. Then try to quickly and firmly press the plunger by hand.
OK:
Plunger is very difficult to move.
HINT:
If the plunger is easy to move, replace the valve lash adjuster assembly.
3. INSPECT CAMSHAFT
(a) Inspect the camshaft for runout.
(1) Place the camshaft on V-blocks.
(2) Using a dial indicator, measure the runout at the center journal. Maximum Runout: 0.04 mm (0.00157 in.) HINT:
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(b) Using a micrometer, measure the cam lobe height. Standard Cam Lobe Height:
Minimum Cam Lobe Height:
HINT: If the cam lobe height is less than the minimum, replace the camshaft. | |
(c) Using a micrometer, measure the journal diameter. Standard Journal Diameter:
HINT: If the journal diameter is not as specified, check the oil clearance. Click here | |
4. INSPECT CYLINDER HEAD SET BOLT
(a) Using a vernier caliper, measure the diameter of the threads at the measurement point. Standard Diameter: 10.85 to 11.00 mm (0.427 to 0.433 in.) Minimum Diameter: 10.70 mm (0.421 in.) Measurement Point (Distance from the Seat): 100 mm (3.94 in.) HINT:
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5. INSPECT CHAIN SUB-ASSEMBLY
(a) Using a spring scale, pull the chain sub-assembly with a force of 147 N (15 kgf, 33.0 lbf) as shown in the illustration. |
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(b) Using a vernier caliper, measure the length of 15 links.
Maximum Chain Elongation:
137.8 mm (5.43 in.)
HINT:
6. INSPECT NO. 2 CHAIN SUB-ASSEMBLY
(a) Using a spring scale, pull the No. 2 chain sub-assembly with a force of 147 N (15 kgf, 33.0 lbf) as shown in the illustration. |
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(b) Using a vernier caliper, measure the length of 15 links.
Maximum Chain Elongation:
137.8 mm (5.43 in.)
HINT:
7. INSPECT CRANKSHAFT TIMING SPROCKET
(a) Place the chain sub-assembly around the crankshaft timing sprocket.
(b) Using a vernier caliper, measure the diameter of the crankshaft timing sprocket with the chain sub-assembly. Maximum Sprocket Diameter (with Chain Sub-assembly): 62.2 mm (2.45 in.) HINT:
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8. INSPECT IDLE SPROCKET ASSEMBLY
(a) Place the chain sub-assembly around the idle sprocket assembly.
(b) Using a vernier caliper, measure the diameter of the idle sprocket assembly with the chain sub-assembly. Maximum Sprocket Diameter (with Chain Sub-assembly): 65.2 mm (2.57 in.) HINT:
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9. INSPECT NO. 1 IDLE GEAR SHAFT OIL CLEARANCE
(a) Using a micrometer, measure the diameter of the No. 1 idle gear shaft. Standard No. 1 Idle Gear Shaft Diameter: 22.987 to 23.000 mm (0.905 to 0.906 in.) | |
(b) Using a caliper gauge, measure the inside diameter of the idle sprocket assembly. Standard Idle Sprocket Assembly Inside Diameter: 23.020 to 23.030 mm (0.906 to 0.907 in.) | |
(c) Subtract the No. 1 idle gear shaft diameter measurement from the idle sprocket assembly inside diameter measurement.
Standard Oil Clearance:
0.020 to 0.043 mm (0.000787 to 0.00169 in.)
Maximum Oil Clearance:
0.093 mm (0.00366 in.)
HINT:
If the oil clearance is more than the maximum, replace the No. 1 idle gear shaft and idle sprocket assembly.
10. INSPECT NO. 1 CHAIN TENSIONER ASSEMBLY
(a) Turn the stopper plate clockwise to release the lock. Push the plunger and check that it moves smoothly. HINT: If the plunger does not move smoothly, replace the No. 1 chain tensioner assembly. |
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11. INSPECT NO. 2 CHAIN TENSIONER ASSEMBLY
(a) Check that the plunger moves smoothly. |
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(b) Using a vernier caliper, measure the wear depth of the No. 2 chain tensioner assembly.
Maximum Depth:
1.0 mm (0.0394 in.)
HINT:
If the depth is more than the maximum, replace the No. 2 chain tensioner assembly.
12. INSPECT NO. 3 CHAIN TENSIONER ASSEMBLY
(a) Check that the plunger moves smoothly. |
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(b) Using a vernier caliper, measure the wear depth of the No. 3 chain tensioner assembly.
Maximum Depth:
1.0 mm (0.0394 in.)
HINT:
If the depth is more than the maximum, replace the No. 3 chain tensioner assembly.
13. INSPECT CHAIN TENSIONER SLIPPER
(a) Measure the wear depth of the chain tensioner slipper. Maximum Depth: 1.0 mm (0.0394 in.) HINT: If the depth is more than the maximum, replace the chain tensioner slipper. |
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14. INSPECT NO. 1 CHAIN VIBRATION DAMPER
(a) Using a vernier caliper, measure the wear depth of the No. 1 chain vibration damper. Maximum Depth: 1.0 mm (0.0394 in.) HINT: If the depth is more than the maximum, replace the No. 1 chain vibration damper. |
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15. INSPECT NO. 2 CHAIN VIBRATION DAMPER
(a) Using a vernier caliper, measure the wear depth of the No. 2 chain vibration damper. Maximum Depth: 1.0 mm (0.0394 in.) HINT: If the depth is more than the maximum, replace the No. 2 chain vibration damper. |
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16. INSPECT CAMSHAFT THRUST CLEARANCE
(a) Inspect the camshaft thrust clearance (for Bank 1).
(1) Install the camshaft.
Click here
(2) Install the No. 2 camshaft.
Click here
(3) Using a dial indicator, measure the thrust clearance while moving each camshaft back and forth. Standard Thrust Clearance: 0.08 to 0.13 mm (0.00315 to 0.00512 in.) Maximum Thrust Clearance: 0.18 mm (0.00709 in.) HINT:
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(b) Inspect the camshaft thrust clearance (for Bank 2).
(1) Install the No. 3 camshaft sub-assembly.
Click here
(2) Install the No. 4 camshaft sub-assembly.
Click here
(3) Using a dial indicator, measure the thrust clearance while moving each camshaft back and forth.
Standard Thrust Clearance:
0.08 to 0.13 mm (0.00315 to 0.00512 in.)
Maximum Thrust Clearance:
0.18 mm (0.00709 in.)
HINT:
17. INSPECT CAMSHAFT OIL CLEARANCE
(a) for Bank 1:
(1) Clean the camshaft bearing caps, camshaft housing sub-assembly and camshaft journals.
(2) Place the camshafts onto the camshaft housing sub-assembly.
(3) Lay a strip of Plastigage across each camshaft journal. |
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(4) Install the camshaft bearing caps.
Click here
NOTICE:
Do not turn the camshaft.
(5) Remove the camshaft bearing caps.
Click here
(6) Measure the Plastigage at its widest point. Standard Oil Clearance:
Maximum Oil Clearance:
HINT:
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(b) for Bank 2:
(1) Clean the camshaft bearing caps, camshaft housing sub-assembly LH and camshaft journals.
(2) Place the camshafts on the camshaft housing sub-assembly LH.
(3) Lay a strip of Plastigage across each camshaft journal. |
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(4) Install the camshaft bearing caps.
Click here
NOTICE:
Do not turn the camshaft.
(5) Remove the camshaft bearing caps.
Click here
(6) Measure the Plastigage at its widest point. Standard Oil Clearance:
Maximum Oil Clearance:
HINT:
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18. INSPECT INTAKE MANIFOLD
*a | Cylinder Head Side |
*b | Surge Tank Side |
(a) Cylinder head side:
(1) Using a precision straightedge and feeler gauge, check the surface which contacts the cylinder head sub-assembly and cylinder head LH for warpage.
Maximum Warpage:
0.1 mm (0.00394 in.)
HINT:
If the warpage is more than the maximum, replace the intake manifold.
(b) Surge tank side:
(1) Using a precision straightedge and feeler gauge, check the surface which contacts the intake air surge tank assembly for warpage.
Maximum Warpage:
0.1 mm (0.00394 in.)
HINT:
If the warpage is more than the maximum, replace the intake manifold.
19. INSPECT EXHAUST MANIFOLD
(a) Using a precision straightedge and feeler gauge, check the surface which contacts the cylinder head sub-assembly and cylinder head LH for warpage. Maximum Warpage: 0.7 mm (0.0276 in.) HINT: If the warpage is more than the maximum, replace the exhaust manifold. | |