Vanaru Coolant System Notes
We recommend that the rubber hoses in the front that connect the radiator to the main plastic pipes be switched so that the return line is on the outside.  This is much cleaner than the alternative, which is to have the hoses cross over each other next to the transmission.  To swap the rubber hoses first the plastic pipes need to be free to move.  Loosen all the clamps and cut all the tie wraps holding them in.  There is a hidden clamp on the 2wd models just above the rear edge of the gas tank.  It can be loosened without removal of the tank.  We also suggest on 2wd vans to completely remove the longer pipe and reinstall it so it's on the inside.  Only one pipe needs to be pulled out and then the other slid over to reinstall the removed pipe.
When the pipes are loose then swap the hoses on the front.  Loosen the clamps on the radiator to adjust the hoses to the new angle then tighten the clamps again.  The hoses can be swapped with out any kinks or interference with the spare tire.  When it all looks good then resecure the main pipes and heater hoses.
When we install the stainless steel pipe we mark and drill the holes for the pipe brackets last.  There are unused 8mm holes available eon the engine on either end of the cylinder head for this purpose.
We prefer the stock style spring clamps to screw style clamps when they can be used as they retain a constant tension.
Bleeding procedure is this; fill with coolant as much as possible.  On a completely empty van we pressurize the expansion tank with compressed air (very low pressure, 10 psi max) then open the radiator bleeder until the pressure is gone or coolant comes out.  Refill the expansion tank with coolant then pressurize until the radiator is full.  Also open the valve on the stainless steel pipe until coolant comes out.  Next slightly raise the front of the van and run until warm.  Bleeding is best done with the engine at about 2500 rpm as the coolant circulation at idle is very minimal.  An engine that is getting hot during the bleeding process will get cooler at higher rpms provided the thermostat is open.  We always run the can until the radiator fan comes on.  Then check both bleeders again.  Next open the heater circuit.  Recheck both bleeders after a couple days driving.  You probably won't find any air but it only takes a few minutes.  Also recheck hose clamps after a few days.