Komatsu — HIGH PRESSURE HYDRAULIC FILTERS

Maintenance - Section 4 08/07 OM4016 Page 4-18 Lubrication and Service Filter Element Replacement 1. Place filter assembly (Figure 4-7) on work bench. Using a spanner tool at both ends, hold housing (1) and loosen (counter-clockwise) inlet housing (5). 3. Install new element (2) into filter housing (1) using new O-Ring (3) and Backup Ring (4). 4. Install inlet housing (5) to filter housing (1) and tighten to 10 - 12 kg.m (73 - 87 ft. lbs.) torque. Remove inlet and then remove filter element (2) from housing. Discard O-Ring (3) and Backup Ring (4). 5. Refer to "Filter Assembly Installation" and install on truck. NOTE:

Filter Elements should be replaced every 2000 hours*, and after any debris-producing component failure within the hydraulic system. 2. Thoroughly clean filter housing and inlet hous- ing. Using clean hydraulic oil, lightly lubricate sealing surfaces. * More frequent replacement may be required in very dusty/dirty environments. FIGURE 4-7. FILTER ASSEMBLY 1. Filter Housing 2. Filter Element 3. O-Ring 4. Backup Ring 5. Filter Housing Inlet 6. Spanner Hole 7. Spanner Hole