Checking The Crankshaft - Westerbeke 7.0 KW BGC -60Hz Technical Manual

3. Check each connecting rod's thrust clearance.
Specified Umit:
Allowable Umit:
0.0059 - 0.0098 in.
(0.15 - 0.25 mm)
0.0118 in. (0.30 mm)
4. Check each connecting rod's journal width.
Journal Width 4.5 KW BCG:
STO
U/S 0.0098 in.
(0.25 mm)
U/S 0.0197 in.
(0.50 mm)
1.4557 - 1.4567 in.
(36.976 - 37.000 mm)
1.4461 - 1.4465 in.
(36.732 - 36.742 mm)
1.3969 - 1.3973 in.
(35.482 - 35.492 mm)
Journal Width 7.0 BCG & 7.0 BCGA:
STO
U\S 0.0098 in.
(0.25 mm)
1.5739 - 1.5748 in.
(39.976 - 40.000 mm)
1.5642 - 1.5646 in.
(38.732 - 39.742 mm)
5. Measure the connecting rod width.
Standard Rod Width: 0.n95 - 0.7815 in.
(19.80 - 19.85 mm)
Checking the Crankshaft
1. Check the crankshaft for cracks or other damage. If necessary, replace the crankshaft.
2. Check to see that the oil passages of the crankshaft are open. If any clogs are found, remove them with
compressed air or a suitable wire.
3. Check the crankshaft for eccentric wear; that is, see
if the journals have become elliptical or tapered. If
it exceeds the allowable limit, compensate for this
wear by grinding the bearing journals and replace
the bearings with undersized bearings.
NOTE: Measure the diameter of each of the
crankpins and main journals at two points (the
front and rear portions) at 90 degrees to the
crankshaft axis, as shown in the figure.
Westerbeke Generators
74