6. Broken or improperly ad- justed fan belts. The belt ten- sioner should be adjusted to have a 1/2-in clearance. That's how its shown in Fig 74. TM 9-2300-216-20 or within "Operating Range" as shown in Fig. '2, Ch I. TM 9-2320-238-20. If the belts are badly worn or any one is broken, replace the whole set. They come as a matched set (4 belts). Order Kit, belts V: fan, FSN 3030-, 780-7001. -M 1. Dirty filter pac. Cleaning the filter pac is a daily afrer-opcratlon job. Let thar pac go dirty, and you're asking for trouble. In severe duist operation, \ou may have to clean them several times a day. The right way to remove and clean the filter pacs is spelled out on page 110, TM 9-2300-216-10 and pages.. 97 and 98, TM 9-2320-238-10. You can shake, use compressed air or wash those filter bags; but before you do any of these, read over the instructions given in the TM so the job will be done right and the filter won't get damaged. And above all, be certain to clean out the filter pac compartments. HERE'S HOW TO CLEAN 'EM! ) K- "-_ 0' CAREFULLY REMOVE SPACERS... RELEASE RUBBER CAP... DON'T BEAT 2. Misalined filter pac. Are your filter pacs installed right? The installations shown in these TM illustrations are wrong and have been rescinded. ig61,TM9-32038 g 85 M92300216-10 --" *Ai.tfg, ar. **. *-. ,:-:' .. :. ..f i. f-. ^. .- .