INSTALLATION INSTRUCTIONS VR BAFFLED RADIATOR Arrow’s baffled radiator improves engine cooling system efficiency by separating trapped air and steam from the coolant. Two additional hoses are required. One connects the top tank to the inlet side of the water pump. The other connects the top tank to the thermostat housing. See Figure 1 for details. On older engines it may be necessary to drill and tap a ¼ NPT port in the thermostat housing (see Figure 2). Note: It is extremely difficult to fill system if the 208776 hose is not connected. Deaeration Line (P/N 208780) Thermostat Housing Figure 2 Water Pump Figure 1 2301 E. Independence St. Tulsa, OK 74110-4900 (918) 583-5711 • 1-800-331-3662 Fax (918) 592-1481 • U.S. and Canada Fax Only 1-800-266-1481 www.arrowengine.com VRRH_f © July 2009 a company Thermostat Housing Make Up Line (P/N 208776) ¼-18 NPT Drilled hole to go into cored passage. Locate in center of boss.
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INSTALLATION INSTRUCTIONS VR BAFFLED RADIATOR
Arrow’s baffled radiator improves engine cooling system efficiency by separating trapped air and steam from the coolant. Two additional hoses are required. One connects the top tank to the inlet side of the water pump. The other connects the top tank to the thermostat housing. See Figure 1 for details. On older engines it may be necessary to drill and tap a ¼ NPT port in the thermostat housing (see Figure 2).
Note: It is extremely difficult to fill system if the 208776 hose is not connected.
Deaeration Line (P/N 208780)
Thermostat Housing Figure 2
Water Pump
Figure 1
2301 E. Independence St. Tulsa, OK 74110-4900 (918) 583-5711 • 1-800-331-3662Fax (918) 592-1481 • U.S. and Canada Fax Only 1-800-266-1481www.arrowengine.com VRRH_f © July 2009
a company
a company
Thermostat Housing
Make Up Line (P/N 208776)
¼-18 NPT Drilled hole to go into cored passage. Locate in center of boss.
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