Out-of-Round and Taper
WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the crankshaft from the engine block (see CRANKSHAFT AND PISTON REMOVAL ).
- Remove the CKP pulse plate from the crankshaft (see CKP PULSE PLATE REPLACEMENT ).
- Clean the crankshaft oil passages with pipe cleaners or a suitable brush.
- Check the keyway slot and the threaded holes for damage.
- Measure the out-of-round at the middle of each rod and the main journal in two places. The difference between measurements on each journal must not be more than the service limit.
Journal Out-of-Round
Standard (New): 0.005 mm (0.00020 in) max.
Service Limit: 0.010 mm (0.00039 in)
- Measure the taper at the edges of each rod and main journal. The difference between measurements on each journal must not be more than the service limit.
Journal Taper
Standard (New): 0.005 mm (0.00020 in) max.
Service Limit: 0.010 mm (0.00039 in)
Straightness
- Place the V-blocks on a flat surface.
- Check the total runout with the crankshaft supported on V-blocks.
- Measure the runout on all of the main journals. Rotate the crankshaft two complete revolutions. The difference between measurements on each journal must not be more than the service limit.
Crankshaft Total Runout
Standard (New): 0.025 mm (0.00098 in) max.
Service Limit: 0.030 mm (0.00118 in)