Блок Двигателя Проверка. Corolla Auris

Turn the roller by hand to check that it turns smoothly.

УКАЗАНИЕ:

If the roller does not turn smoothly, replace the valve rocker arm sub-assembly.

Using a spring scale, apply 140 N (14.3 kgf, 31 lbf) to the timing chain then measure its length.

Maximum chain length:

157.0 mm (6.181 in.)

УКАЗАНИЕ:

Measure the length in at least 3 places and calculate the average length.

Check that the plunger moves smoothly when the cam is raised with your finger.

Release the ratchet pawl and check that the plunger does not move when pushed with your finger.

Wrap the chain around the camshaft timing sprocket.

Using vernier calipers, measure the diameter of the camshaft timing sprocket including the wrapped chain.

Minimum sprocket diameter (with chain):

141.0 mm (5.551 in.)

ПРИМЕЧАНИЕ:

Vernier calipers must be in contact with the chain rollers when measuring.

Wrap the chain around the crankshaft timing sprocket.

Using vernier calipers, measure the diameter of the crankshaft timing sprocket including the wrapped chain.

Minimum sprocket diameter (w/ chain):

74.5 mm (2.933 in.)

ПРИМЕЧАНИЕ:

Vernier calipers must be in contact with the chain rollers when measuring.

Using vernier calipers, measure the thickness of the chain tensioner slipper.

Maximum wear:

1.0 mm (0.039 in.)

Using vernier calipers, measure the thickness of the chain vibration damper.

Maximum wear:

1.0 mm (0.039 in.)

Inspect the circle runout.

1. Place the camshaft on V-blocks.
   

2. Using a dial indicator, measure the circle runout of the camshaft at the center journal.
   

   Maximum circle runout:

   0.03 mm (0.0012 in.)
   

   If the circle runout is greater than the maximum, replace the camshaft.
   

Inspect the height of the cam lobes.

1. Using a micrometer, measure the cam lobe height.
   

   Standard cam lobe height:

   34.484 to 34.584 mm (1.3576 to 1.3616 in.) for intake
   34.773 to 34.873 mm (1.3690 to 1.3730 in.) for exhaust
   

   Minimum cam lobe height:

   34.064 mm (1.3411 in.) for intake
   34.353 mm (1.3525 in.) for exhaust
   

   If the cam lobe height is less than the minimum, replace the camshaft.
   

Inspect the diameter of the cam journals.

1. Using a micrometer, measure the cam journal diameter.
   

   Journal diameter:

   23.979 to 23.995 mm (0.9441 to 0.9447 in.)
   

   If the cam journal diameter is not as specified, check the oil clearance.
   

Using vernier calipers, measure the minimum outer diameter of the compressed thread at the measuring point.

Standard outer diameter:

11.7 to 12.0 mm (0.461 to 0.472 in.)

Minimum outer diameter:

11.5 mm (0.453 in.)