TM   55-2840-241-23 Table 10-1. Operating Limits (Continued) Item Limit Remarks Maximum  vibration Test Stand Airframe (200 cps filter) Transient 1.2   inch/second 2.0   inch/second If  limits  are  exceeded  shut  down Compressor Turbine 1.8   inch/second 3.0   inch/second immediately.    Investigate Gearbox 1.0   inch/second 1.7  inch/second mine  cause. Steady state Compressor 0.6 inch/second 0.9   inch/second Turbine 0.9   inch/second 1.5  inch/second Gearbox 0.5   inch/second 0.8   inch/second NOTE Vibration test required after initial installation of engine in aircraft or when excessive vibration is sus- pected  (refer  to  paragraph  12-8). Oil  pressure During start Idle to 78% N1 78-89%  N1 90%  N1  and  above Oil   temperature For starting For  operation  above  idle* Normal range Maximum Increasing pressure by the time Abort   start   is   pressure 20% N1 is reached start  increasing. 50  psig  minimum 90-130 psig 115-130  psig NOTE Oil pressure limits are based on an oil inlet tem- perature of 180-225°F (82- 107°C). to deter- does not -65°F   minimum   (-54°C) 35°F minimum (2°C) Operate at idle until within limits 180-200°F (82-93°C) 225°F  maximum  (107°C) Reduce  power  to  maintain  limits. During  cold  weather  operations,  150  psig  engine  oil pressure is permitted following engine start. When the 130  psig  limit  is  exceeded,  operate  engine  at  idle  RPM until normal engine oil pressure is obtained. When engine  oil  pressure  is  within  normal  limits,  engine may be operated within full range of temperature lim- its (-54 to 107°C) without regard to engine oil tem- perature   markings. NOTE * For test cell only. 10-7.  Test  Requirements. b. Setting numbers listed in the functional test col- a. Table 10-2 lists the test requirements following umn of table 10-2 refer to the setting numbers in the repair   or   replacement   of   an   engine   component   or functional  test  schedule  (table  10-3). accessory.  Parts  removed  to  gain  access  to  other  parts or areas shall invoke the same test requirements, in c. The following test points should be utilized for accordance  with  the  table  of  test  requirements,  as vibration  testing  of  an  engine  when  installed  in  a  air- parts  repaired  or  replaced  to  correct  deficiencies  or craft. malfunctions.  In  the  event  that  more  than  one  test requirement  is  invoked,  the  most  severe  shall  apply. (1) Steady  state  data  points: Change 14 10-5