Westerbeke 7.0 KW BGC -60Hz Technical Manual page 79

Allowable elliptical or tapered Limit: 0.0008 in. (0.02 mm)
Specified OU Oearance:
Allowable Limit:
0.0008 - 0.0017 in. (0.020 - 0.044 mm)
0.0028 in. (0.07 mm)
4. If the journals must be ground because of severe burning or scoring, grind the crankshaft and replace the
crankshaft bearings with undersized bearings.
4.5KWBCG:
Main Journal DIA.
Crankpin DIA.
7.0 KW BCG & BCGA:
Main Journal DIA.
Crankpin DIA.
1.6526 - 1.6535 in.
(41.976 - 42.000 mm)
1.4557 - 1.4567 in.
(36.976 - 37.000 mm)
1.8101 -1.8110 in.
(45.976 - 46.000 mm)
1.5739 -1.5748 in.
(39.976 - 40.000 mm)
R,·O.I46/0./~7"(.1.
"!/J.99mm)
R, -0./26/0./42"(3.20/3,61
mm}
NOTE: When grinding the crankshaft, the corner sections of the main journals and crank pin
journals D1.lm1. be ground to a radius of 0.25 (R1 and R2). Any crankshaft grinding should be
done by a qualified machine shop.
5. Measure the crankshaft's runout (uneven wear).
Runout Limit: 0.0008 in. (0.02 mm)
6. Measure the crankshaft for bend by placing a dial
gauge at the center bearing journal and turning the
crankshaft as shown in the illustration to the right.
Bend Limit: 0.0012 in. (0.03 mm)
75
Westerbeke Generators