TM  92350-267-10 Table  2-1.  Preventive  Maintenance  Checks  and  Services  for  Model  M992 Item No. 8 Before 2-36 Interval Location Item to Check/ Service Instruments and Gages (continued) Crewmember Procedure DRIVER b.  ENGINE  COOLANT  TEMPER- ATURE gage 170°F to 185°F mini- mum:  230°F  maximum. c.  ENGINE  OIL  PRESSURE  gage 30 to 50 psi at fast idle. d.  TRANSMISSION  OIL  TEMPER- ATURE gage 220°F to 240°F normal:  300°F  maximum. e. TRANSMISSION OIL PRES- SURE gage 10 to 45 psi at fast idle. b. Coolant gage is inoperative  or  does not read within limits. c.  Oil  pressure  gage is inoperative or does  not  read  within limits. d. Transmission oil temperature gage is inoperative  or  does not read within limits. e.  Transmission  oil pressure  gage  is inoperative  or  does not read within limits. Change  1