Dual Function Reservoir

CAUTION: Regulate air pressure to between 3-5 psi (.2-.3 kg/cm² ) during testing. Use proper sized quick connector fitting during testing.

Remove and mark lines from reservoir. Apply regulated air pressure of 3-5 psi (.2-.3 kg/cm² ) to the small diameter tube (return port) on the engine side of reservoir. Engine side contains 2 ports. See Figure .
If air exhausts from only one port on the other side of reservoir, proceed to step 4). If air did not exhaust, block the supply port (large tube) on engine side of reservoir.
Apply regulated air pressure to either of the supply ports on the fuel tank side of reservoir. Remove regulated air and apply to return tube on engine side of reservoir. If air exhausts from one tank side return port, proceed to next step. Replace reservoir if air did not exhaust from one tank side return port.
Block engine side supply port. Apply regulated air pressure to one corresponding supply and return port on tank side. Air pressure should exhaust on engine side return port.
If air pressure did not exhaust, apply air pressure to opposite tank side return port. Replace reservoir if air pressure did not exhaust on engine side return port.
If air pressure exhausted from engine side return port, repeat step 4) on remaining corresponding tank side ports. Check connection or replace reservoir if air pressure did not exhaust on engine side return port.
If air exhausted from engine side return port during steps 4) and 6), return blockage from engine side supply port.
Apply pressure to engine side supply line. Note the open port on tank side. Install a 0-10 psi (0-.70 kg/cm² ) pressure gauge on the closed supply port.
Block the open tank side port. Apply air pressure. Replace reservoir if air pressure exists on the gauge. If no pressure exists, remove pressure gauge. Install gauge on closed tank side return port.
Apply air pressure on engine side return port. Block open return port. Replace reservoir if air pressure exists on gauge.