Racal Instruments RA-117 User Manual page 48

(3) Disconnect the coaxial cables.
(4) Remove the three screws securing this unit to the main chassis.
(5) Re-assemble in the reverse order.
Valve Replacement
12. With the exception of V5, replacement of valves will not affect receiver alignment.
When V5 is replaced refer to GENERAL SERVICING AND ALIGNMENT PROCE-
DURES.
Dismantling 48