4A-LC valve adjustment

Good afternoon,

I attached the specs for you below. I would adjust them cold.

Note: Check and adjust the valve clearance while the engine is cold.

I attached the procedure for you below to perform the adjustment. Make sure you check the clearances before performing the adjustments.

Roy

1. Remove cylinder head covers with gaskets
2. Inspect valve clearance

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(a) Set No.1 cylinder to TDC/compression.
Turn the crankshaft pulley and align its groove with the "0" mark of the No.1 timing belt cover.
Check that the valve lifters on the No.1 cylinder are loose and valve lifters on the No.4 are tight.

If not, turn the crankshaft one revolution (360°) and align the mark as above.

(b) Measure the clearance of half of the valves.

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Measure only those valves indicated in the figure. Record the measurements which are out of specification. They will be used later to determine the required replacement shims.

Valve clearance (Cold):
Intake 0.15 - 0.25 mm (0.006 - 0.010 in.)
Exhaust 0.20 - 0.30 mm (0.008 - 0.012 in.)

(Reference)
Valve clearance (Hot):
Intake 0.20 - 0.30 mm (0.008 - 0.012 in.)
Exhaust 0.26 - 0.36 mm (0.010 - 0.014 in.)

(c) Turn the crankshaft pulley one revolution and measure the other valves.
Turn the crankshaft pulley one revolution and align the timing marks as stated in (a) above.

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Measure only the valves indicated as shown.

3. ADJUST VALVE CLEARANCE

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(a)Using SSTs, press down the valve lifter with SST A and hold the valve lifter down with SST B. SST: 09248-55010

NOTE: Before pressing down the valve lifter, position the notch as shown in the figure.

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(b) Remove the adjusting shim with a small screwdriver and magnetic finger.

NOTE: For easy removal of the shim, when setting SST B, set it on the lifter so there is a wide space in the removal direction.

(c) Determine the replacement shim size by using the following Formula or Charts.

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Using a micrometer, measure the thickness of the shim which was removed.
Calculate the thickness of the new shim so the valve clearance comes within specified value.

T = Thickness of shim used
A = Valve clearance measured
N = Thickness of shim new
Intake side: N = T + (A - 0.20 mm (0.008 in.)
Exhaust side: N = T + (A - 0.25 mm (0.010 in.)

Select a shim with a thickness as close as possible to the calculated values.

NOTE: Shims are available in 17 sizes, in increments of 0.050 mm (0.0020 in.), From 2.500 mm (0.0984 in.) To 3.300 mm (0.1299 in.).

(d) Install a new adjusting shim.
Place a new adjusting shim on the valve lifter.
Using SST A, press down the valve lifter and remove SST B.
SST 09248-55010

4. RECHECK VALVE CLEARANCE
5. INSTALL CYLINDER HEAD COVERS WITH GASKETS

Yes it does. I always go with the greatest allowed. When it gets hot that clearance will shrink.

Roy