R R  O-ring installation area Figure 302/TASK 79-21-10-991-310
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 1 Lubricate a new back-up seal (90) with engine oil (Material

_
 No. CP2442).

 2 Make sure that the back-up seal groove is clean and in good
_
 condition.

 3 Install the new back-up seal (90) in the groove of the cover
_
 (40).

 (b) Lubricate a new O-ring (30) with engine oil (Material No. CP2442)

 (c) Make sure that the O-ring groove is clean and in good condition.

 (d) Install the new O-ring (30) in the groove of the cover (40).

 (e) Lubricate the threads of the bolts (70) with engine oil (Material No. CP2442).

 (f) Put the filter in position. R WARNING : MAKE SURE THAT THE FILTER PIN IS CORRECTLY LOCATED
_______
R BETWEEN TWO INNER RIBS OF THE COVER, AND NOT IN THE
R AXIS OF TAPPED HOLES OF THE COVER. INCORRECT
R INSTALLATION CAN CAUSE IMPORTANT OIL LEAKAGE DURING
R ENGINE OPERATION WITH POSSIBLE IFSD AND ENGINE FAILURE.
 CAUTION : DO NOT TURN THE COVER TO PREVENT DAMAGE TO THE FILTER.

_______
 1 Set the supply filter cover in position. Push the cover into

_ the housing until it comes against the filter housing flange.
 (g) Install the bolts (70). TORQUE the bolts to between 34 and 45 lbf.in (0.38 and 0.50 m.daN).

 (h) Lubricate a new O-ring (50) with engine oil engine oil (Material No. CP2442)

 (i) Make sure that the O-ring recess on the supply filter cover is clean and in good condition.

 (j) Install the new O-ring (50) in the recess of the supply filter cover.

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 (5) Install the drain plug (60) as follows: CAUTION : MAKE SURE THAT THE BACK-UP SEAL IS INSTALLED. THE ABSENCE
_______ OF THE BACK-UP SEAL CAN CAUSE AN IMPORTANT OIL LEAKAGE DURING ENGINE OPERATION WITH POSSIBLE ENGINE FAILURE.
 CAUTION : MAKE SURE THAT THE BACK-UP SEAL IS CORRECTLY SET WHEN YOU
_______
 INSTALL IT.

 (a) If the drain plug back-up seal (80) has been removed, you must install a new back-up seal, as follows:
 NOTE : For a correct installation of back-up seal (80), it is
____ necessary to put the lip of seal positioned to the chamfer of the filter housing.
 1 Lubricate a new back-up seal (80) with engine oil (Material
_
 No. CP2442).

 2 Make sure that the back-up seal groove is clean and in good
_
 condition.

 3 Install the new back-up seal (80) in the groove of the drain
_
 plug (60).

 (b) Install the drain plug (60) in the supply filter cover. Torque the plug to to between 65 and 75 lbf.in (0.73 and 0.84 m.daN).

 (c) Safety the plug (60) to the cover (40) with lockwire 0.032 in.

 (0.8 mm) dia. (Material No. CP8001) or lockwire 0.032 in. (0.8 mm) dia. (Material No. CP8002).
 (6) Remove the oil drain container from under the lube filter. Subtask 79-21-10-790-050
 C. Do a minimum idle check (Ref. TASK 71-00-00-710-006) and make sure there is no leakage (Ref. TASK 79-00-00-210-003).
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________ Subtask 79-21-10-410-055
 A. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.

 (2) Close the fan cowl door: (Ref. TASK 71-13-00-410-040)
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 (3) Remove the warning notice(s).

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 LUBRICATION UNIT - REMOVAL/INSTALLATION

_______________________________________
 TASK 79-21-10-000-004
 Removal of the Lubrication Unit
 WARNING : HOT OIL CAN CAUSE BAD BURNS. USE PRECAUTIONS AGAINST OIL SPLASHES
_______
 WHEN YOU DO THE MAINTENANCE ON THE LUBRICATION UNIT.

 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
　
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