What was found
RIGHT PACK TRIP OFF CAUTION MESSAGE TRIED TO RESET PER QRH AND FAILED AGAIN. PACK TEMP WAS 58 DEGREES DURING FAILURE DURING CLIMB OUT. GROUNDED - YES. FOUND ACM TO BE GRINDING. REPLACED ACM REF B737-800 AMM 21-51-04. PERFORMED PACK/ZONE BITE TEST - RAM SENSOR DISPLAYS FAULT ON BITE BOX. RIGHT PACK REMAINS ON MEL 21-1F. ACCOMPLISHED B737-800 FIM 21-62 TASK 820 RESET PACK TEMP CONTROLLER. RAN PACKS FOR 2 HRS AT VARIOUS SETTINGS. PERFORMED MULTIPLE BITE TESTS IN PERIOD & NO FAULTS NOTED. ALL OPS NORMAL. SUSPECT FAULT WAS SET WHILE ACCOMPLISHING TSR7804970. THIS CLEARS MEL 21-1F.