4.12.6 WATER FILTER - REPLACE FILTER CARTRIDGE ........................................................ 437 4.13 EVERY 2000 OPERATING HOURS OR YEARLY ........................................................................ 438 4.13.1 HYDRAULIC SYSTEM - CHANGE OIL, REPLACE SUCTION STRAINERS AND PULSATION DAMPER ...................................................................................................... 439 4.13.2 EMERGENCY ESCAPE LADDER - INSPECTION ........................................................... 451 4.14 EVERY 3000 OPERATING HOURS HOWEVER AT LEAST ONCE A YEAR ..............................
452 4.14.1 SWING GEARS AND MOTOR ADAPTER HOUSING - CHANGE OIL ............................. 453 4.14.2 TRAVEL GEARS, BRAKE AND MOTOR ADAPTER HOUSINGS - CHANGE OIL .......... 457 4.14.3 PTO (PUMP DISTRIBUTOR GEAR) - CHANGE OIL ....................................................... 463 4.15 FIRE PREVENTION ....................................................................................................................... 466 4.16 REPAIR WELDINGS ......................................................................................................................
468 4.16.1 PROTECTIVE MEASURES BEFORE STARTING WELD REPAIRS ON THE UNDERCARRIAGE ........................................................................................................... 471 4.16.2 PROTECTIVE MEASURES BEFORE STARTING WELD REPAIRS ON THE LOADER ATTACHMENT .................................................................................................................. 473 4.16.3 PROTECTIVE MEASURES BEFORE STARTING WELD REPAIRS ON THE SUPERSTRUCTURE ........................................................................................................ 475 4.16.4 AFTER FINISHING THE REPAIR WELDINGS ON THE SUPERSTRUCTURE ............... 477 483