– Park machine safely.
Check that cooling system is cool and squeeze top radiator hose to check that system pressure has dropped.
 – Remove radiator cap.
 – Install radiator cap on appropriate adapter.
 – Attach adapter to D05104ST pressure pump.
 – Apply pressure. Pressure valve in cap should open according to specifications.
If cap leaks, relieve pressure and retighten cap. Test again. Replace cap if pressure is not within specification.