Figure 4-8A. Crankcase Breather

Section V. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

TM-5-6115-593-12 Power Plant Utility (MUST) Gas Turbine Engine Driven (AMERTECH Corp Model APP-1) Manual
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TM 5-6115-593-12 TO 35C2-3-463-1 until a minimum coolant temperature of 160F (71°C) is obtained. Then shut engine off and move MAINTENANCE LOCKOUT switch to MAINTENANCE LOCKOUT position. (2) Remove oil drain plug on skid base (figure 1-1), then open engine oil drain valve and allow oil to drain into a container. (3) Install drain plug and close oil drain valve. Add oil to full mark. (4) Move MAINTENANCE LOCKOUT switch to OPERATION position. Start and operate engine for approximately 5 minutes. (5) Stop engine and allow oil to drain back into crankcase before rechecking oil level using dipstick. Check for leaks. NOTE Do not remove dipstick when engine is operating. Use oil level sight gauge to monitor oil level while engine is running. c. Oil Filter Service. (See figure 4-47). (1) Refer to Chapter 13 of the Intermediate (Field) (Direct and General Support) and Depot Level Maintenance Manual (A) TM5-6115-593-34 for servicing of the bypass oil filters. Note that the service function is the same as replacing the filters. (2) Service spin-on type oil filters (see figure 4-47) as follows: NOTE Oil pressure drop reading across filters is the best way to determine change periods. If pressure drop from inlet to outlet exceeds pressure logged after latest installation of spin-on oil falters by more than 10 psi (0.7 kg/cm ) with 140F (60C) oil temperature, change the filters. (a) Drain the oil system, par. 4-8b. (b) Unscrew, remove, and discard the filters and gaskets. (c) Fill new filters with proper lubricant (see table 3-1), attach new gaskets and screw on new filters. Hand tighten, then turn an additional three-fourths of a turn. (d) Fill engine to "H" mark on dipstick. (e) Run engine and check for leakage. (f) Stop engine and allow several minutes for oil to drain back to oil crankcase, then recheck level. (g) Run engine and record oil pressure reading. (h) Check/reset sight gauge per par. 4-8 a (2). 1.Wing nut 2. Washer 3. Gasket 4. Upper body 5. Element 6. Vapor Element 7. Gasket 8. Gasket 9. Lower Body Figure 4-8A. Crankcase Breather 4-16

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