Measurement
- Remove the valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement.
- Rotate the crankshaft pulley clockwise, aligning the notches (1) between the pulley and the cover.
- Measure the valve clearance at positions (2) and (6). Rotate the crankshaft pulley clockwise 180 degrees.
- Measure the valve clearance at positions (3) and (7). Rotate the crankshaft pulley clockwise 180 degrees.
- Measure the valve clearance at positions (4) and (8). Rotate the crankshaft pulley clockwise 180 degrees.
- Measure the valve clearance at positions (1) and (5). Rotate the crankshaft pulley clockwise 180 degrees.
- If the measured values are not within specifications, replace the valve tappets.
- Determine the tappet size. Refer to Determining Replacement Tappet Size.
- Replace the valve tappets if necessary. Refer to Cylinder Head Disassemble.
Specifications
| • | Intake Side: 0.21-0.29 mm (Nominal Value: 0.25 mm) |
| • | Exhaust Side: 0.27-0.35 mm (Nominal Value: 0.30 mm) |
Determine Replacement Tappet Size
- Remove the old tappet.
- Locate the ID number inside old tappet.
- Locate the ID number in the following table and record the value.
- Perform the following calculation to determine the replacement tappet size.
Value of removed tappet + measured clearance - nominal value = new tappet size
Example:
| • | ID of old tappet = 20 = 3.20 mm, clearance was 0.31 mm, nominal value is 0.25 mm |
| • | 3.20 mm + 0.31 mm - 0.25 mm = 3.265 mm |
| • | 3.265 mm = 27X (ID number) = 55353766 (part number) |
Part Number | ID Number | Value (mm) |
|---|---|---|
24465260 | 04 | 3.060-3.050 |
24465261 | 06 | 3.050-3.070 |
24438041 | 08 | 3.070-3.090 |
24438145 | 10 | 3.090-3.110 |
24438146 | 12 | 3.110-3.130 |
24438147 | 14 | 3.130-3.150 |
24438148 | 16 | 3.150-3.170 |
24438149 | 18 | 3.170-3.190 |
24438150 | 20 | 3.190-3.210 |
24438151 | 22 | 3.210-3.230 |
55353764 | 24X | 3.230-3.244 |
55353765 | 25X | 3.244-3.258 |
55353766 | 27X | 3.258-3.272 |
55353767 | 28X | 3.272-3.286 |
55353768 | 30X | 3.286-3.300 |
55353769 | 31X | 3.300-3.314 |
55353770 | 32X | 3.314-3.328 |
55353771 | 34X | 3.328-3.342 |
55353772 | 35X | 3.342-3.356 |
55353773 | 36X | 3.356-3.370 |
55353774 | 38X | 3.370-3.384 |
55353775 | 39X | 3.384-3.398 |
55353776 | 41X | 3.398-3.412 |
55353777 | 42X | 3.412-3.426 |
55353778 | 43X | 3.426-3.440 |
55353779 | 45 | 3.440-3.460 |
55353780 | 47 | 3.460-3.480 |
55353781 | 49 | 3.480-3.500 |
55353782 | 51 | 3.500-3.520 |
55353783 | 53 | 3.520-3.540 |
55353784 | 55 | 3.540-3.560 |
55353785 | 57 | 3.560-3.580 |
55353786 | 59 | 3.580-3.600 |
