What was found
WHILE PERFORMING INSTALLATION TEST OF MW0311 HARNESS, "BLEED AIR REGULATOR OPERATIONAL TEST", FOUND #1 ENGINE BLEED PSI WOULD NOT GO ABOVE 10 PSI. GROUNDED - YES. PERFORMED #1 ENGINE BLEED AIR SYSTEM HEALTH CHECK PER TASK CARD #NG-36WC-00001, FOUND HIGH STAGE REGULATOR AND HIGH STAGE VALVE FAILED, REMOVED AND REPLACED HSR AND HSV PER B737-900 AMM 36-11-07 AND 36-11-06, OPS CHECK GOOD, HEALTH CHECK SUCCESSFUL, LEAK CHECK GOOD, PER AMM 73-21-06-400-802-F00, PERFORMED PARAGRAPH 5.F (1)(C)2 TO END OF TASK CARD, OPS CHECK NORMAL, ALL PARAMETERS NORMAL.