TM-9-2350-238-20-2

CRANE (CAB) COMPONENTS RECOVERY VEHICLE, FULL TRACKED: LIGHT,ARMORED, M578

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL

MAY 1993

CHANGE 1

TM-9-2350-238-20-2 - Page 134 of 495

TM 9-2350-238-20- 2

2-37. MAINTENANCE OF COMMANDER’S CUPOLA ASSEMBLY (CONT) .

DISASSEMBLY (CONT )

5

Remove headless grooved pin (17) ,

10

Remove lower cupola base retainer (26) .

cupola cover door handle (18), headless

Remove 78 ball bearings (29) and 7 8

shoulder pin (19), and helical compres-

cupola ring ball bearings (30) .

sion spring (20) .

11

Remove hexagon plain nut (31), rigger’ s

6

Remove two machine screws (21), tw o

Iockwashers (22), and cupola rin g

release handle retaining strap (23) .

7

Remove four socket head capscrew s

(24) securing upper cupola retainer (25)

and lower cupola base retainer (26)

together .

8

Remove rigger’s cupola assembly cupol a

ring (27) and upper cupola retainer (25) .

9

If damaged, remove rigger’s cupola hatc h

crash cushioning pad (28) from rigger’ s

cupola assembly cupola ring (27). Dis-

card rigger’s cupola hatch crash cushion-

ing pad.

cupola setscrew (32), setscrew (33), an d

gun lock clamp assembly (34) from ma -

chine gun mount pintle (35) .

INSPECTION/REPAIR

1

Check for broken, damaged, or missin g

parts .

2

If rigger’s cupola assembly cupola ring i s

broken, damaged, or missing, repair is by

replacement of next higher assembly .

3

Repair is by replacement of authorize d

parts (TM 9-2350-238-24P-2) .

2-9 4