(b) If the oil leakage rate at the drain mast assembly is greater than 7 drops per minute (20 ml/hr or 1 cc/3 min), do a leakage test (Ref. TASK 71-00-00-790-005).

 (4) Hydraulic leakage at the drain mast assembly (Ref. TASK 29-00-00-790-001).

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 (5) Measure the individual leak quantities and look for the items that follow:

 -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. The oil source
 - The starter pad  20 ml/hr (1cc/3min) (7 drops/min)  Replace the seal(Ref. TASK 72-63-00-300-002) or (Ref. TASK 72-63-00-300-003) or (Ref. TASK 72-63-00-300-004).
 - The AGB rear hydraulic pump pad  20 ml/hr (1cc/3min) (7 drops/min)  Replace the seal(Ref. TASK 72-63-00-300-002) or (Ref. TASK 72-63-00-300-003) or (Ref. TASK 72-63-00-300-004).
 - The AGB fuel pump pad  20 ml/hr (1cc/3min) (7 drops/min)  Replace the seal(Ref. TASK 72-63-00-300-002) or (Ref. TASK 72-63-00-300-003) or (Ref. TASK 72-63-00-300-004).
 - The lube unit pad  No leaks allowed
 - The main oil/fuel heat exchanger  20 ml/hr (1cc/3min) (7 drops/min)  Replace the main oil/fuelheat exchanger (Ref. TASK 79-21-20-000-002) and (Ref. TASK 79-21-20-400-002).
 - The AGB/IDG pad  20 ml/hr (1cc/3min) (7 drops/min)  Replace the seal(Ref. TASK 72-63-00-300-002) or (Ref. TASK 72-63-00-300-003) or (Ref. TASK 72-63-00-300-004).
 - The forward sump  60 ml/hr (1cc/min) (20 drops/min) Replace the engine.

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 -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
- The Aft sump (flooding drain)  Any amount, less than 60 ml/hr (1cc/min) (20 drops/min) after engine shutdown. Replace the engine.
 - The Aft sump (scavenge tube) No leak allowed  Replace the engine.
 - The Aft sump (supply tube)  No leak allowed  PRE CFM SB 72-0403Replace the engine. END OF PRE CFM SB 72-0403
 POST CFM SB 72-0403
 Replace the supply tube (Ref. TASK 72-56-00-300-006) END OF CFM SB 72-0403
 - The Aft sump (oil inlet cover O-ring)  No leak allowed  Replace the oil inletcover O-ring (Ref. TASK 72-56-00-000-002) (Ref. TASK 72-56-00-400-002).

 NOTE : Oil puddling in the exhaust/aft sump area/centerbody must be
____
 considered as normal as long as the oil consumption rate is within
 serviceable limits.

 2. The fuel source
 - The fuel manifold  No leaks allowed  Perform a leak check at
 shroud  the manifold assembly (Ref. TASK 73-11-40-790-002).
 - Fuel pump at the AGB drive pad  180 ml/hr (3 cc/min) (60 drops/min) (up to 90 drops/min allowed for 25 cycles)  Replace the fuel pump(Ref. TASK 73-11-10-000-003) and (Ref. TASK 73-11-10-400-003).

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 -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------NOTE : The heat exchanger, VSV actuator(s), VBV fuel gear motor, HPTCC
____ valve, LPTCC valve, RACC valve, HMU and the fuel distribution block share the same fuel drain line at the drain mast manifold. There may be more than one unit leaking. Isolate which unit is leaking by disconnecting the drain tubes at each component.
 - Heat exchanger  180 ml/hr (3 cc/min) (60 drops/min) (up to 90 drops/min allowed for 25 cycles)  Replace the main oil/fuelheat exchanger (Ref. TASK79-21-20-000-002) and(Ref. TASK 79-21-20-400-002).
 - VSV actuator(s) (LH or RH)  180 ml/hr (3 cc/min) (60 drops/min) (up to 90 drops/min allowed for 25 cycles)  Replace the VSVactuator(s) (Ref. TASK 75-32-10-000-002) and(Ref. TASK 75-32-10-400-002).
 - VBV fuel gear motor  180 ml/hr (3 cc/min) (60 drops/min) (up to 90 drops/min allowed for 25 cycles)  Replace the VBV fuel gearmotor (Ref. TASK 75-31-10-000-002) and (Ref. TASK75-31-10-400-002).
　
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