. MAINTENANCE MAINTENANCE PROCEDURE a Adjustment WARNING 4 - 31 CHECK AND ADJUST RU BBER SHOE TENSION er shoes) (Machine equipped with rubb The wear of the rubber shoe will vary with the work conditions an d type of soil, so inspect t he wear and track tension whenever necessary. Stop the machine on firm, horizontal ground when carrying out the inspection and maintenance. In particular, on new machin es or after new tracks have been in stalled and th e tension has been s et to the sp ecified value, the track tension will b ecome loose in the first 5 to 30 ho urs when the machine ha s been used for a certain amount of repeated travel.
If the track tension is a djusted frequently until the initial lo oseningno lon ger occurs, t his will prevent the shoes from coming off due to insuff icient track tension. If operations are carried out when the rubber shoe is loose, the track will com e off and it w ill caus e prematur e wear of the core. Checking 1. Run the engine at low distance equal to the len machine. 2. Choose wooden block (3 roller (2), then place it on 3. Measure the maximum d the rubber shoe and the Standard deflection Deflection "a" should idling, move the machine forward gth of track on ground, then stop t ) that will reach from idler (1) to carr top of the track.
eflection between the top surface bottom surface of the wooden bloc be 1 to 3 mm (0.039 to 0.118 in). If the track tension is not at t he standard value, adjust it in the f ollowing man There is danger of the plug (4) fl ying out under the high internal press of the grease. When loosening p lug (4), never loosen it more than one tu Never loosen any part other than plug (4). Never put your face in line w the mount of plug (4). If the Rubber shoe tension is not relieved by this procedure, please cont your Komatsu distributor. Increasing Track Tension NOTICE The standard value is low, so be careful not to tighten the rubber shoe too