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| Illustration 1 | g01411978 |
(1) Maximum permissible temperature of the camshaft gear for installation on the camshaft ... 315 °C (599 °F)
| NOTICE |
|---|
Do not use a torch to heat the gear. A torch can unevenly heat the gear causing warpage. The hardness of the gear may also be changed with the use of a torch. |
(A) Diameters of camshaft journals
| Number of Journal for 3064 Engine | Number of Journal for 3066 Engine | Standard Diameter | Service Limit (1) |
| 1, 2 | 1, 2, 3 | 53.94 to 53.96 mm (2.123 to 2.124 inch) |
53.90 mm (2.122 inch) |
| 3 | 4 | 52.94 to 52.96 mm (2.084 to 2.085 inch) |
52.90 mm (2.083 inch) |
| ( 1 ) | The service limit is the maximum dimension or the service limit is the minimum dimension that is specified for a part. Replace the part if the service limit is reached. |
(2) Torque for two bolts ... 10 to 13 N·m (90 to 115 lb in)
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| Illustration 2 | g01411984 |
(B) Specified camshaft lobe lift
- Exhaust lobe ... 7.344 mm (0.2891 inch)
- Inlet lobe ... 6.689 mm (0.2633 inch)
- Service limit for lobe lift for exhaust ... 6.844 mm (0.2694 inch)
- Service limit for lobe lift for inlet ... 6.189 mm (0.2437 inch)
- Inlet lobe ... 6.689 mm (0.2633 inch)
Note: Replace the camshaft if the service limit for the lobe lift is reached.
In order to find the lobe lift, use the following procedure:
- Measure the camshaft lobe height (C) .
- Measure the base circle (D) .
- Subtract the base circle that is found in Step 2 from the lobe height that is found in Step 1. The difference is the actual camshaft lobe lift (B) .
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| Illustration 3 | g01411985 |
Note: Use a dial indicator and blocks in order to determine the runout of the camshaft. Take one half of the dial indicator reading as the runout.
(3) Camshaft
- Maximum permissible runout for camshaft ... 0.020 mm (0.0008 inch)
- Straighten the camshaft if runout is less than the following amount. ... 0.050 mm (0.0020 inch)
- Replace the camshaft if runout is more than the following amount. ... 0.050 mm (0.0020 inch)
- Straighten the camshaft if runout is less than the following amount. ... 0.050 mm (0.0020 inch)
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| Illustration 4 | g01411986 |
(4) Measure the camshaft bearing with a dial indicator. Subtract the diameter of the camshaft journal in order to give bearing clearances. Refer to Table 3 for the clearance between the camshaft journals and the bushings.
| Number of Journal for 3064 Engine | Number of Journal for 3066 Engine | Standard Diameter | Repair Limit (2) |
| 1, 2 | 1, 2, 3 | 0.04 to 0.09 mm (0.002 to 0.004 inch) |
0.15 mm (0.006 inch) |
| 3 | 4 | 0.040 to 0.119 mm (0.0016 to 0.0047 inch) |
0.15 mm (0.006 inch) |
| ( 2 ) | The repair limit is the maximum dimension or the repair limit is the minimum dimension that is specified for a part. Repair the part if the repair limit is reached. |
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| Illustration 5 | g01411988 |
(5) Install the dial indicator in order to determine gear end play.
- End play ... 0.10 to 0.25 mm (0.004 to 0.010 inch)
- Replace the thrust plate if the end play exceeds the following amount. ... 0.30 mm (0.012 inch)
- Thrust plate thickness ... 4.85 mm (0.191 inch)
- Replace the thrust plate if the end play exceeds the following amount. ... 0.30 mm (0.012 inch)