Vanguard BIG BLOCK M540000, Repair Manual, Page: 50 / 168

Oil Cooler
1. Remove the fastener ( A , Figure 33) to release oil cooler
top bracket ( B ) from blower housing.
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2. Remove the 2 fasteners ( C ) to release bottom bracket
from back plate.
3. Squeeze tangs and move hose clamps ( D ) away
from diverter oil inlet and outlet fittings. Remove hoses
from diverter. Use the Fuel Line Removal Tool for best
results. See SECTION 3 - TROUBLESHOOTING -
Special Tool List .
4. Drain any remaining engine oil within the oil cooler to an
appropriate disposal container.
Oil Diverter Valve and Drip Tray
1. Rotate hex ( A , Figure 34) to release adapter ( B ) and
diverter ( C ) from crankcase flange.
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2. Remove o-ring ( D ) from diverter groove.
3. If equipped, remove the 2 fasteners ( A , Figure 35) that
secure the oil drip tray to the engine block.
4. Remove the drip tray from the engine block and set
aside.
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Oil Pressure Switch
1. Remove the electrical connector and wire from the oil
pressure switch terminal ( A , Figure 36).
2. Remove the oil pressure switch from the engine ( B ).
NOTE: Wrap a shop tower around the oil pressure switch to
catch any residual engine oil.
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