Note:
• | Crankshaft bearing clearances are critical. Excessive crankshaft bearing clearance may affect crankshaft position (CKP) sensor signals and/or on-board diagnostic (OBD) II system performance. |
• | Crankshaft bearing caps must be installed to the proper location and direction. |
• | When installing the crankshaft bearings, align the locating tabs on the bearings with the locating notches in the engine block journal bore and the bearing cap. |
• | Always install crankshaft bearings with their machined partner. Do not file bearings or mix bearing halves. |
• | In order to prevent engine block oil leakage, install NEW M8 crankshaft bearing cap side bolts. |
| The crankshaft bearing cap M8 side bolts have a pre-applied sealant patch applied to the bolt flange. |
- Install the crankshaft bearings to the engine block and bearing caps. The thrust bearings are to be installed into center journal.
- Lubricate the bearing surfaces and crankshaft journals with clean engine oil.
Caution: To maintain proper crankshaft end play, use extreme care during crankshaft installation. Avoid scoring or damaging the thrust bearing.
- Install the crankshaft.
Note: The bearing caps must be installed in the proper location and direction.
- Install the crankshaft bearing caps, with bearings, into the engine block.
- Install the M10 bolts (129)
and studs (128).
- Using a plastic-face hammer, tap the bearing caps into place.
- Install the NEW M8 bearing cap side bolts (127).
Caution: Refer to Fastener Caution in the Preface section.
- Tighten the bearing cap M10 bolts (1-10). Tighten the M10 bearing cap bolts (1-10) a first pass in sequence to
20 N·m (15 lb ft).
Note: To properly align the crankshaft thrust bearings, the final thrust of the crankshaft MUST be in the forward direction.
- Using a plastic-face hammer, tap the crankshaft rearward, then forward in order to align the thrust bearings.
• | Tighten the M10 bolts (1-10) a final pass in sequence 80 degrees using the
J 45059 meter
. |
• | Tighten the M10 studs (11-20) a first pass in sequence to
20 N·m (15 lb ft). |
• | Tighten the M10 studs (11-20) a final pass in sequence 51 degrees using the
J 45059 meter
. |
• | Tighten the bearing cap side M8 bolts to
25 N·m (18 lb ft). |
| Tighten the bolt on 1 side of the bearing cap and then tighten the bolt on the opposite side of the same bearing
cap. |
- Install the CKP sensor.
10.1. | Inspect the CKP sensor O-ring seal (750). If the O-ring seal is not cut or damaged, it may be used again. |
10.2. | Coat the O-ring seal with clean engine oil. |
10.3. | Install the O-ring onto the sensor. |
10.4. | Install the sensor (701). Rotate the sensor until the locating hole in the bracket aligns with the bolt hole in the block. |
10.5. | Install the sensor bolt (702) and tighten to
25 N·m (18 lb ft). |
- Measure the crankshaft end play.
11.1. | Thrust the crankshaft forward or rearward. |
11.2. | Insert a feeler gage between the center crankshaft bearing and the bearing surface of the crankshaft and measure the bearing clearance. |
The proper crankshaft end play clearance is 0.04-0.2 mm (0.0015-0.0078 in).
11.3. | If the bearing clearance is not within specifications, inspect the thrust surfaces for nicks, gouges or raised metal. Minor imperfections may be removed with a fine stone. |