Mount the transducer in the bottom of the 

 pinger rack with four bolts. Handle witli care. 

 Rough handling could cause damage to the 

 crystals, the electrical leads, or the rubber 

 diaphragm. 



Mount the pulse transformer in a vertical 

 position with output leads down. (On the camera 

 rack, the transformer is mounted in a horizontal 

 position.) Place the hose clamps over the rubber 

 stoppers at the ends to prevent magnetic cou- 

 pling. Use the 2-inch wood spacer block to sepa- 

 rate transformer from the rack. Further secure 



RUBBER 

 STOPPER 



PRIMARY LEADS 

 (A AND 8) 



CONNECT TO DRIVER 



SECONDARY LEADS 

 (C AND D) 



CONNECT TO TRANSDUCER 



Figure R-4. Sonar pinger pulse transformer. 



the transformer to the rack with electrical tape, 

 to prevent loss of the transformer when it con- 

 tracts at depth. 



Remove the front end cap of the pinger driver 

 before mounting. Check the "O" ring for free- 

 dom from cuts, scratches, dirt, etc. ; inspect seal- 

 ing surfaces for cleanliness; and apply a light 

 coating of grease, to the "O" ring and sealmg 

 surfaces. To remove the front end cap, the rear 

 end cap must be removed along with the side 

 straps and hose clamps. To insure proper seal 

 when replacing the front end cap, replace side 

 straps and rear end cap. Tighten rear end cap 

 wing nut; replace hose clamps and tighten. 



VER 



Figure R-5. Sonar pinger transducer. 



TRANSFORMER 



TRANSDUCER 



Figure Rr^. Sonar pinger and moiinting rack. 



Mount the driver by housing clamps with the 

 end cap nearest the battery facing up. Place 

 clamps aromid main housing cylinder, not end 

 caps. Make sure that end caps clear structural 

 members. Leave enough clearance to allow for 

 insertion and removal of battery. 



R-4 Electrical Connections. — After the 

 driver, transformer, and transducer are mounted 

 on the rack, complete the electrical connections 

 between components as follows : 



Step. 1. Connect sockets on transformer pri- 

 mary cables to male pins at bottom of driver. 

 These connections may be interchanged. Use 

 waterproof grease on pins. 



Step 2. Connect sockets on transformer sec- 

 ondary cables to male pins on transducer cables. 

 These connections may be interchanged. Use 

 waterproof grease on pins. 



Step 3. Remove the end cap from the driver 

 and insert battery base first. 



R-3 



