S 613-016
(2) Change the IDG oil.
S 613-049
WARNING: USE THE FOLLOWING STEPS ONLY WHEN CHANGING THE IDG OIL OR OIL
_______ AND SCAVENGE FILTER. DO NOT USE THIS PROCEDURE IF OTHER WORK IS DONE ON THE IDG OR THE EXTERNAL OIL COOLING CIRCUIT. IF YOU USE THESE STEPS WITH OTHER IDG PROCEDURES, FALSE IDG OIL LEVEL INDICATIONS CAN OCCUR. DAMAGE TO THE IDG CAN OCCUR IF THE OIL LEVEL IS TOO HIGH OR TOO LOW.
(3) When only replacing the IDG oil, do the following steps:
(a)
Replace the scavenge filter (AMM 24-11-02/201).
(b)
Connect the fill hose on the service cart to the pressure fill coupling on the IDG.
NOTE: Make sure the service cart does not have air in the
____ fill hose.
(c) Pump oil into the IDG until clean oil flows out of the IDG drain fitting.
NOTE: To make sure that all of the oil in the external
____ cooling circuit is replaced with new oil. A minimum of
1.5 gallons of oil should drain out of the IDG after you start to pump oil into the IDG.
(d)
Lubricate and install a new o-ring on the case drain plug.
(e)
Install the case drain plug.
(f)
Tighten the case drain plug to 55-75 Pound-Inches.
(g)
Lock the case drain plug with a wire.
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CAUTION: WHEN YOU FILL THE IDG WITH OIL, YOU MUST NOT MIX TYPES OF
_______ OIL IF YOU MIX THE OILS, YOU CAN CAUSE DAMAGE TO THE IDG.
(h) Use the pump on the oil servicing equipment to fill the IDG and the external oil cooling circuit with oil.
NOTE: When you start to put the oil into the IDG, oil could
____ flow from the overflow drain hose. This does not show that the IDG is full.
(i) Stop pumping oil into the IDG when approximately one quart of oil flows from the overflow drain hose into the container.
NOTE: The approximately one quart of oil (including the small
____ amount that may have drained when you connected the overflow drain hose) overflow ensures that the IDG oil level is correct.
S 613-044
(4)
Dry motor the engine for 2 (two) minutes (AMM 71-00-00/201).
S 793-047
(5)
Do a leak check of the IDG and the external cooling system.
(a)
If leaks are found, do the following steps: 1) Repair the leaks 2) Add oil to the IDG, do the IDG servicing task. 3) Run the engine at ground idle power and check for leaks.
Refer to Power Plant Tests 3A (AMM 71-00-00/501).
(b)
If the IDG oil leaks are repaired, do the following steps: 1) Remove the cover from the OVERFLOW drain valve. 2) Put a container below the IDG to catch the oil which will
flow from the IDG. 3) Put the end of the overflow drain hose into the container.
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WARNING:_______ BE CAREFUL WHEN YOU CONNECT THE OVERFLOW DRAIN HOSE.
PRESSURE IN THE IDG CAN CAUSE HOT OIL TO COME OUT OF
THE OVERFLOW DRAIN COUPLING AND CAUSE INJURY TO
PERSONS.
CAUTION:_______ USE THE CORRECT ADAPTER TO RELEASE THE PRESSURE FROM
THE IDG. INCORRECT ADAPTER WILL NOT RELEASE THE
PRESSURE IN THE IDG. THIS CAN CAUSE AN INCORRECT OIL
LEVEL IN THE IDG AND THE SUBSEQUENT FAILURE OF THE
IDG.
4) Hook up the overflow drain hose to the overflow drain coupling. a) Let the oil flow into the container.
NOTE: It is usual for some oil to drain from the IDG
____ when you connect the hose.
5) Remove the cover from the pressure fill valve. 6) Connect the pressure fill hose with its fitting (3/8 ozone).
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