SHOCKING TRUTH CLEAN AND LUBE dl-\., /-- .^ge iiiiiii COTTON PICKIN' wiRE CLEAR OF THE SHORTIN' . BAR! It can happen in the high-soltage S power supply section of )our Hawk AN/MPQ-35 pulse acquisition radar. The high-.oltage wire between the V" series regulator tube grid and the / 'I. 56 high.voltage selector ss itch can get TAPE wedged under the shorting bar. When WIRES iou open the cabinet doors, the short- ing bar gets hung up-keeping the SHORIING shorting bar from grounding out the S BAR Cl capacitor. And this leaves you wide Open for a mean bite from the capacitor. What sou want to do is keep the high-oltage "ire ckar of the shorting bar b) lacing it to the high-voltage lead running to the T3 transformer. A couple inches of n) Ion r ine % ill do the lob It's listed under FSN 4020-52"-9089 on page 19 of TM 9.4935-501-1 P/ I iSep 6"1. CLOSE, THEN LOWER The suppl\ people sure ire bus) re- placing thc missile selecror switLhes in the batten control central in Hawk outfits. Seems more'n a fe" people lonr the tiring control console toser assembly) %%hen the shelf coser is raised. \hen the rao covers meet, the rears of the snitches get in the aas and like a beating. So make sure the shelf coser is closed before lou lo'er the console coier. 54 tO I /1 YO M EYEATHESE Believe it... dirt, sand and what-not sure can get to the ring gear, 9085694, in the azimuth-range indicator assem- bly and the spur gear, 9084193, on the sector scan drive of your Hawk AN/ MPQ-35 pulse acq radar. What to do? There's nothing in your LO 9-1430-502-12 (Jun 67)-not yet -but it's still a good idea to clean and lube the gears quarterly. Dry cleaning solvent's a good cleaner, and aircraft and instrument grease is the lube to use. Both are in TM 9-4935-501-15P/1 (Sep 67) -with 1 gallon of the solvent on page 14 ... and 1 pound of the grease on page 15. When you've got 'em clean and dry -put some grease on 'em right away to head off corrosion. You might also tell your support people that you'd sure like them to take apart the sector scan drive once a year and use the same solvent and lube on the gears inside it. WEAR YOUR HALO They're back at support gathering dust in- stead of protecting .ou those protective halos for your Hawk XM50IE2 loader-transporter. That's right M.X'O 9.1450-500-30/' (Aug 66) puts protective bars on the El to keep / HALO you in one piece in case the latching mechanism I IN poops out while you're transporting missiles. J PLA(E But a lot of outfits haven't asked their support unit to drop by with the modification kit. 4 (LOSE SHELF (OVER