Crankshaft Main Bearing
DIMENSIONSMain Bearing To Crankshaft Clearance
Desired 0.046-0.0914 mm (0.0018-0.0036 inch)
Allowable 0.046-0.117 mm (0.0018-0.0046 inch)
TORQUE SPECIFICATIONS
- Install the main bearing caps, crankshaft main bearings and crankshaft thrust main bearings in correct locations.
NOTE: Number 1 main bearing cap is at the front of the engine.
- Install main bearing cap bolts finger-tight. Using a soft-faced hammer, tap the numbers 2, 3 and 4 main bearing caps until the rear machined faces of the main bearing caps are flush with the machined faces of the cylinder block.
- Repeat the above step for the number 1 main bearing cap, aligning the front face of the main bearing cap with the cylinder block. Align the number 5 bearing rear thrust flanges with each other. Check this alignment at both sides of the main bearing caps.
- Tighten main bearing cap bolts to 102 Nm (75 ft. lbs.) for main bearing caps 1,2, 3 and 4.
- Check crankshaft end play as follows:
a. Install Dial Indicator Bracketry D78P-4201-F and Dial Indicator D78P-4201-G or equivalents on the machined surface of the cylinder block.
b. Position dial indicator tip on the nose of the crankshaft and zero in the dial indicator.
c. Using a prybar, move the crankshaft back and forth. Record the reading.
d. End play should be within 0.063-0.216 mm (0.0025-0.0085 inch).
e. If end play exceeds service limits, the crankshaft thrust main bearing should be replaced and end play reverified.
- Tighten all main bearing cap bolts to 129 Nm (95 ft. lbs.).