Oil Pump, Engine

OIL PUMP [Balance Shaft Module (BSM)]






CAUTION: There are two different Balance Shaft Module (BSM) to engine block bolts used. 180 mm bolts with a lock-patch on the threads or 185 mm bolts without lock-patch. Do not reuse the 180 mm bolts. Always discard 180 mm bolts after removing. Failure to replace these bolts can result in engine damage. The 185 mm bolts are reusable. Install the same length bolts that were removed and use either four new 180 mm bolts or four 185 mm bolts.










The 185 mm (7.283 in.) length bolts must be checked for stretching. Check the bolts with a straight edge for necking (2). If the bolts are necked down, they must be replaced.

Tighten new 180 mm Balance Shaft Module (BSM) mounting bolts as follows:
a. Tighten to 15 Nm (11 ft. lbs.).
b. Tighten to 33 Nm (24 ft. lbs.).
c. Rotate bolts an additional 90°.

Tighten 185 mm Balance Shaft Module (BSM) mounting bolts as follows:
a. Tighten to 15 Nm (11 ft. lbs.).
b. Tighten to 29 Nm (22 ft. lbs.) .
c. Rotate bolts an additional 90°