E. Procedure
 S 024-010
 (1)  Remove the heat exchanger:
 (a)  
Remove the bolt (10), which holds the clip, that attaches the oil tubes to the tube support . 1) Keep the bolt (10) for the installation.

 WARNING:_______BE CAREFUL WHEN YOU DISCONNECT THE OIL TUBES. WEAR THE PROTECTION GEAR. HOT OIL CAN CAUSE INJURY.

 (b)  
Disconnect the oil-out line from the IDG. 1) Let the oil from the oil-out line flow into the container.

 WARNING:_______BE CAREFUL WHEN YOU DISCONNECT THE OIL TUBES. WEAR THE PROTECTION GEAR. HOT OIL CAN CAUSE INJURY.

 (c)  
Disconnect the oil-in line from the IDG. 1) Let the oil from the oil-in line flow into the container.

 (d)  
Put the container below the heat exchanger to catch the oil from the disconnected tubes.

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757
MAINTENANCE MANUAL

 (e)  
Disconnect the bolts (8) which attach the oil-in line to the heat exchanger. 1) Remove the oil-in line. 2) Discard the used O-ring (9). 3) Keep the bolts (8) and the oil-in line for the

 installation.

 (f)  
Put a plug in the two ends of the oil-in line.

 (g)  
Put a plug in the oil-in opening of the IDG.

 (h)  
Disconnect the bolts (8) which attach the oil-out line to the heat exchanger. 1) Remove the oil-out line. 2) Discard the used O-ring (9). 3) Keep the bolts (8) and the oil-out line for the

 installation.

 (i)  
Put a plug in the two ends of the oil-out line.

 (j)  
Put a plug in the oil-out opening of the IDG.

 (k)  
Remove the wire harness brackets (11) at the bottom of the heat exchanger: 1) Remove the two bolts (10), the washers (12) and the nuts

 (13). 2) Keep the bolts (10), the washers (12), the nuts (13), and the brackets (11) for the installation.

 (l)  
Remove the wire harness bracket (11) at the top of the heat exchanger: 1) Remove the two bolts (10), the washers (12) and the nuts

 (13). 2) Keep the bolts (10), the washer (12), the nut (13) and the bracket (11) for the installation.

 (m)  
Remove the inlet air duct of the heat exchanger: 1) Remove the bolts (10), the nuts (13), and the washers (14,12).

 2)  Keep the bolts (10), the nuts (13), the washers (14,12) for the installation.

 (n)  
Disconnect the bottom support bracket (20) of the heat exchanger at the fan case: 1) Remove the 2 bolts (19), the 4 washers (23, 24) and the 2

 nuts (25). 2) Keep the 2 bolts (19), the 4 washers (23, 24) and the 2 nuts (25) for the installation. 3) Keep the bracket (20) attached to the heat exchanger.
 WARNING: PUT ON THE PROTECTION GEAR WHEN YOU REMOVE THE HEAT
_______ EXCHANGER HOT OIL CAN FLOW FROM THE HEAT EXCHANGER, AND CAUSE INJURY TO PERSONS.
 (o)  Hold the heat exchanger, and remove the top support bracket of the heat exchanger, at the fan case: 1) Remove the 2 bolts (19), the 4 washers (23, 24), and the 2
 nuts (25).
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757 MAINTENANCE MANUAL
 2)  Keep the 2 bolts (19), the 4 washers (23, 24), and the 2 nuts (25) for the installation.
 3)  Keep the bracket (21) attached to the heat exchanger.
 (p)  
Remove the heat exchanger from the engine.

 1)  Let the oil from the heat exchanger flow into the container.

 (q)  
Remove the 2 bolts (16) which attach the bottom support bracket to the heat exchanger. 1) Keep the bolts (16), and the 3 brackets (17)(18)(20) for

 the installation.

 (r)  
AIRPLANES WITH RB211 ENGINES (POST-RR SB 24-6439); Keep the two spacers (15) for the installation.

 (s)  
Remove the 2 bolts (16) which attach the top support bracket to the heat exchanger. 1) Keep the bolts (16), and the 2 brackets (19)(22) for the
　
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