SERVICE MANUALsometimes corrected by tightening the connector nut, but ifthis fails, replace the connectors or hose, or both.MAINTENANCEEvery six months all air connections should be checked andtightened if leaking (refer to SERVICE CHECKS). Once eachyear all tubing and hoses should be inspected for dents, kinks,swelling, chafing or crimping. Replace tubing if these conditionsare found.Be sure to inspect trailer brake hoses and hose couplingpacking rings and replace if necessary.SERVICE CHECKSOperating TestsIf any evidence is found that an air line is restricted, removeand blow out through it in both directions to be sure the passagethrough the tubing is not obstructed in any way. Inspect piping forpartial restrictions such as may be caused by dents or kinks.Damaged pipes must be replaced.Leakage TestsWith the air system fully charged, the governor cut out andbrakes applied, use SE-2326 Leak Detector Tester at air lines,hoses and fittings to check for leakage. No leakage ispermissible. Leakage at a tubing fitting is sometimes correctedby tightening the fitting nut. If this fails to correct the leakage,replace the tubing, sleeve or fitting, the tubing or hose.CTS-4079 - CHAPTER XII - Page 7
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