Install armored air cleaner as follows

TB 9-2300-378-14

(5) Install armored air cleaner as follows (fig. 4-24):

CAUTION

Armored air cleaner weighs approximately 600 pounds.

NOTES

This procedure is to be used for installation of the

armored top loading air cleaner when it is moved from

a workbench or skid to its mounting position on tank.

Perform steps a thru g to both left and right sides of

tank.

(a) Install new gasket 8762779 and outlet elbow 8762789 (lt) or (rt) or 8762789-1

( r t ) on new armored air cleaner (view A). S e c u r e with 14 new locknuts

MS21044-N6 following proper tightening sequence (view B) (same for left and

right sides). Torque locknuts to 20-25 lb ft (27-34 Nm).

(b) Install new gasket 8762775 and inlet elbow 10863871 (lt) or 10863874 (rt) on

S e c u r e with ten nuts MS21044-N6.

n e w armored air cleaner (view A).

Tighten nuts evenly in a cross pattern (view C).

(c) Attach lifting sling 11658914 to three lifting eyes of armored air cleaner

assembly 12251922-1 (lt) or 12231922-2 (rt) (view D).

(d) Lift and guide air cleaner to vehicle and carefully guide air intake and outlet

elbows through hull openings, ensuring that blower motor electrical lead is

properly inserted through opening.

NOTE

On some tanks it will be difficult to properly position air

cleaner on outriggers due to an interference with hull inlet

elbow opening. I f this occurs, grind away excess metal

around hull inlet elbow opening until proper alignment of air

cleaner mounting holes and outrigger holes exists.

(e) Check for gap between air cleaner base plate and the outriggers. If a gap

exists between the armored air cleaner base plate and the outriggers, use up

to 3 washers MS20002-10 per bolt as shims to eliminate gap (view E).

(f) Secure air cleaner to outriggers with six new bolts MS90728-165, six new

w a s h e r s MS21206-10, six new washers 10910174-18, and six new nuts

MS51967-20 (view E). Before installation, apply primer MIL-S-46163, Grade

F , and sealing compound MIL-S-46163 Type 1, Grade L to bolt and nut

t h r e a d s . Use two to three drops of sealing compound per bolt. Torque air

cleaner mounting bolts to 195 lb-ft (265 Nm).

(g) Remove lifting sling 11658914 from armored air cleaner.

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