Drain Tube Assembly

TM 5-4310-340-24

(1)

Install elbow (39) in compressor oil sump.

NOTE

It is not necessary to remove spring (18, fig. C-3)

(2) Using figure C-3 as a guide, assemble drain

and spring lock (19) from fan if fan is being

tube assembly if disassembled during removal.

removed to gain access to other defective

components. Remove spring and spring lock

(3)

Connect tube (38) to elbow (39).

from fan only when necessary for replacement of

spring or fan.

(4) Secure drain tube bracket (36) to clamps with

two screws (31) nuts (28) and washers (30).

a. Removal (fig C-3).

(1) Remove fan guard (para 3-5).

3-8. Third Stage Cooler

(2) Remove. lockwire (32), five screws (11), five

washers (12), hub cover (13), and seal (14).

NOTE

(3) Remove fan screw (15), thrust washer (16),

It is not necessary to remove fan when removing

and spring cover (17) from fan (21).

coolers individually. However, nuts (6 fig C-3)

(4) Grip fan spring (18) with a pair of needle nose

and cooler end nuts will become accessible if fan

pliers and pull spring from fan.

is removed (para 3-6).

(5) Remove spring lock (19) from fan.

(6) Remove fan bushing (20), fan (21), and thrust

a. Removal (fig C-3).

washer (22) from crankshaft.

(1) Remove fan guard (para 3-5).

(2) Remove two screws (31), nuts (28) and

b. Installation.

washers (30) securing oil drain tube bracket to clamps.

(1) Position thrust washer (22) on compressor

(3) Loosen end nut of tube (38) at elbow (39) and

crankshaft.

move tube away from coolers. Tighten tube end nut if oil

(2) Using a suitable spring compressor, complete

sump is not drained.

spring lock (19) and insert into fan hub.

(4) Remove eight cooler clamp screws (3), nuts

(6), and 16 washers (4). Remove four cooler clamps (5).

NOTE

(5) Remove screw, nut, and washer securing third

Regardless of condition of fan spring 118)

stage cooler clamp to after cooler clamp at relief valve end of

replace with a new spring.

third stage cooler (2).

(6) Disconnect third stage cooler (2) from relief

(3) Using fan assembly fixture (15, fig C-12),

valve (27) and elbow (1).

Remove cooler (2) from

place fan spring into fixture guide and turn handle of fixture

compressor.

slowly tightening spring in guide. With spring right in guide,

(7) Remove three cushion clamps from cooler if

use pusher to gradually force spring into fan hub until spring

cooler is being replaced. Omit this step if cooler is being

snaps into place. If spring does not snap into place correctly,

removed to gain access to other components.

remove spring. discard and replace with a new spring.

(4) Position fan bushing (20), fan (21) with

b. Installation

assembled parts. and cover (17) on compressor crankshaft.

(1) Position third stage cooler (2) on fan guard

Secure with thrust washer (16) and fan screw (5). Tighten fan

brackets (26) and loosely connect cooler end nuts to elbow (1)

screw to 125 lb-in.

and relief valve (2). (2) Position four cooler clamps (5) over

(5) Position seal (14) and cover (13) on fan.

coolers and secure to fan guard brackets (26) with eight

Secure with five screws (11) and washers (2). Secure screws

screws (3), nuts (6) and 16 washers (40.

(11) with lockwire (32).

(3) Tighten cooler end nuts to 135-150 lb-in.

(4) Position cushion clamps. if removed, on

3-7. Drain Tube Assembly

cooler (2). Secure clamps to aftercooler clamp and oil drain

a. Removal (fig C-3).

tube bracket with three screws, nuts, and six washers.

(1) Remove two screws (31). nuts (28), and

washers 1301 securing bracket (36) to clamps.

3-9. Second Stage Cooler

(2) Disconnect tube (38) from elbow (39) and

a. Removal.

remove assembly from compressor. (3) Disassemble

(1) Remove third stage cooler (para 3-8).

assembly as required using figure C-3 as a guide.

(2) Remove screw (6 fig C-4), nut (7), and two

(4) Remove elbow (39) from compressor oil

washers (5) from cushion clamps (4). Remove clamp from

sump.

cooler (3).

b. Installation

(3) Disconnect cooler (3) from relief valve (8) and

NOTE

elbow 19).

(4) Remove screw (23), fig D-3), lockwasher(24),

Apply teflon tape to all pipe thread s prior to

flat washer (25), and upper right fan guard bracket (26).

assembly per MIL-T-27730.

3-3