TM-5-5420-228-24

LAUNCHER HYDRAULICS SYSTEM M48A5/M60A1 TANK CHASSIS, TRANSPORTING: FOR BRIDGE, ARMORED-VEHICLE-LAUNCHED; SCISSORING TYPE, CLASS 60

TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT; MAINTENANCE MANUAL

AUGUST 1985

TM-5-5420-228-24 - Page 197 of 750

TM 5-5420-228-24

VISION BLOCK REPLACEMENT (EARLY MODEL CUPOLA) (Sheet 3 of 3)

4.

5.

6.

7.

Using 7/8 inch socket, tighten

jackscrew (C) to seat vision

block (A) in place.

Using 7/8 inch socket, alternately

tighten two outer screws (D) to

10 lb-ft (13 N m).

Using locking wire (E) and

slipjoint pliers, lockwire

three screws holding wedge (B).

Using sealing compound kit,

apply sealant around outer

circumference of vision block

(A) to obtain a waterproof seal

between vision block (A) and

cupola (F).

NOTE

Sealant will be tacky when applied

but will harden to form a hard

rubber like seal.

8.

Align bezel (G) with holes in

cupola.

9.

Using flat-tip screwdriver, insert

and tighten fourteen screws (H).

End of Task

TA251413

3-12