- Install the crankshaft bearings
into the engine block.
- Apply clean engine oil to the crankshaft bearings.
- Apply clean engine oil to the crankshaft
bearing journals.
- Install the crankshaft.
- Install the crankshaft bearings into
the crankshaft bearing caps.
- Apply clean engine oil to the crankshaft bearings.
Important: Always look to ensure that the crankshaft bearing cap directional arrow
point toward the front of the engine block and the crankshaft bearing cap
is in the original location and position.
- Install the crankshaft bearing caps in the original positions and with
the arrow on the crankshaft bearing caps in the direction of the front of
the engine block.
- Install the crankshaft bearing cap bolts and the crankshaft bearing
cap studs.
- Thrust the crankshaft rearward in order to set and align the crankshaft
thrust bearings and the crankshaft bearing caps.
- Thrust the crankshaft forward in order to align the rear faces
of the crankshaft thrust bearings.
- Look to ensure that the crankshaft bearing caps are fully seated
in the engine block crankshaft bearing cap channel and that the crankshaft
bearing caps are centered on the engine block bulkheads.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Tighten the crankshaft bearing cap bolts and the crankshaft bearing
cap studs.
Tighten
- Tighten the crankshaft bearing cap bolts and the crankshaft bearing
cap studs on the first pass to 20 N·m (15 lb ft).
- Tighten the crankshaft bearing cap bolts and the crankshaft bearing
cap studs (two bolt caps) on the final pass to 73 degrees using the
J 36660-A .
- Tighten the bearing cap outboard bolts (four bolt caps) on the
final pass to 43 degrees using the
J 36660-A .
- Tighten the bearing cap inboard bolts and the bearing cap inboard
studs (four bolt caps) on the final pass to 73 degrees using the
J 36660-A .
- Measure the crankshaft end play.
13.1. | Firmly thrust the crankshaft rearward, and then forward. |
This will align the crankshaft rear bearing thrust surfaces.
13.2. | With the crankshaft pushed forward, insert a feeler gauge between
the crankshaft and the crankshaft rear bearing thrust surface to measure the
clearance. |
Specification
Crankshaft end play 0.05-0.20 mm (0.002-0.008 in)
- Rotate the crankshaft in order to check for binding.
A bent crankshaft or lack of proper crankshaft bearing clearance may
cause binding.
- If the crankshaft does not turn freely, loosen the crankshaft
bearing cap bolts on 1 crankshaft bearing cap at a time in order to determine
the location of the binding.
A lack of proper crankshaft bearing clearance may be caused by the following:
• | Burrs on the crankshaft bearing cap |
• | Foreign material between the crankshaft bearing and the engine
block |
• | Foreign material between the crankshaft bearing and the crankshaft
bearing cap |
• | Damaged crankshaft bearing |
• | Improper size crankshaft bearing |