-23-15-1. Crawler tension15. CrawlerAdjust the crawler tension by supplying grease to the grease cylinder. Makeadjustment so that the crawler tension will be the same on both sides.Excessive crawler tension will cause the front roller to lose the clearance, causingthe crawler to come off easily and the machine to break easily. Exercise care.2mm15-2. Installation . removal of crawlerWhen removing the crawler, loosen the M14 bolt (width across flats: 22) on thegrease cylinder, remove the grease, return the front roller to the original position,lift the crawler that is to be removed above the ground, and then remove thecrawler. Reverse the order of removal when installing the crawler. Refer to thepreceding paragraph for the crawler tension.15-3. Prevention of crawler tearing looseBe sure to check that the crawler is not slackened and the crawler tension isadjusted appropriately before operation.16. Adjustment of traveling sectionConduct the following work before adjusting the traveling section:Remove the crawlers on both sides, or place the machine on a stable base to liftthe crawlers on both sides.Remove the rear cover.When lifting the machine, be sure to use an appropriate support tocompletely secure the machine.C A U T I O NCAUTION1215-4. Greasing the crawlerThe seesaw roller fulcrum shaft in the crawler section is provided with a greasenipple. Supply grease to the nipple every 50 hours. Use Excelite EP2 grease orequivalent to ISO VG2. (Refer to "Lubrication of friction surface of each part")50hM14 boltLower roller Ass’yRubber crawlerGrease nippleTraveling hydraulic motorGrease cylinderSupport pipeUpper roller Cylinder pipeSmall springFront roller receiverOil seal UE407210Bearing 6306RSO-ring P24BFront rollerSpring stopperLarge springSprocketCrawler adjuster