TM 5-6115 434 12
Figure 3-12. Lubrication system component replacement (Sheet 2 of 2).
Tighten case securely, but do not over-torque case.
3-31. Pressure Relief Valve (fig. 3-12)
a.
Removal. Unscrew pressure relief valve from oil pump assembly, without removing pump assembly from
engine: remove valve assembly and packings.
b.
Cleaning and Inspection
(1)
Clean pressure relief valve with an approved cleaning solvent and dry thoroughly with filtered compressed
air.
(2)
Visually inspect valve assembly for cracks, corrosion, abrasion, damaged threads, or other evidence of
damage.
c.
Installation. Install satisfactory or 'replacement pressure relief valve in oil pump assembly using new packing.
d.
Adjustment. Check operation of valve assembly during engine operation. Oil pressure shall be 90 10 psig.
Adjust oil pressure by loosening locknut and turning adjustment screw as required. (para 3-8b for instructions for
attaching gas turbine engine analyzer to power unit).
3-32. Tachometer Generator (fig. 3-12)
a.
Removal. Without removing oil pump assembly from engine, detach wiring harness connection from tach-
generator. Remove four attaching nuts and washers and carefully remove tach-generator from oil pump assembly.
Remove gasket.
b.
Installation. Install replacement tachometer generator on oil pump assembly using new gasket and secure with
attaching washers and nuts. Tighten nuts securely. Reconnect wiring harness connector.
3-33. Oil Temperature Bulb (fig. 3-12)
a.
Removal, Without removing oil pump assembly, remove wiring harness connector from oil temperature bulb.
Unscrew and remove oil temperature bulb and gasket.
b.
Cleaning and Inspection.
(1)
Clean oil temperature bulb with an approved cleaning solvent and dry thoroughly with filtered compressed
air.
(2)
Visually inspect oil temperature bulb for cracks, corrosion, abrasion, damaged threads, or other evidence
of damage.
c.
Installation. Install satisfactory or replacement oil temperature bulb on oil pump assembly using new gasket.
3-45
