2552 - B1 LEVELING VALVE TEST POINT LEAK ~~~~~ 2552 B1 LEVELLING VALVE TEST POINT LEAK.  2552 B1 levelling v/v test point replaced. Security/function check - OK. No leak found. Air leak test = 0.4 bar/5 min.  Sarma/Sugu/Anand/Kamarul/Shafie 45001