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MAINTENANCE MAINTENANCE SCHEDULE CHART MAINTENANCE SCHEDULE CHART MAINTENANCE SCHEDULE CHART 4- 55 4- 56 4- 63 4- 65 4- 66 4- 68 4- 74 4- 75 4- 77 4- 82 4- 21 4- 27 4- 29 4- 29 4- 30 4- 30 4- 31 4- 32 4- 33 4- 34 4- 35 4- 36 CHECK BEFORE STARTING EVERY 50 HOURS SERVICE Lubrication 4- 40 4 - 17 INITIAL 250 HOURS SERVICE (ONLY AFTER THE FIRST 250 HOURS) Change oil in engine o il pan, replace engine oil filter cartridge Replace fuel prefilter cartridg Replace fuel main filte r cartri Replace transmission filter el ement (valve side, brake cooling side) Change oil in transmission ca Change oil in brake oi l tank, r eplace brake oi l filter element Change oil in final driv e case Change oil in different ial case Replace hydraulic filte r eleme Change oil in hydrauli WHEN REQUIR Check, clean or repla ce air cl Clean in side of coolin g syste Check l evel o f window washe r fluid, add fluid Clean a ir conditioner air filter Check r efrigerant (gas Check d ump body Check l ength of suspension c ylinder Bleed a ir from front br Bleed a ir from center Bleed a ir from rear br Check p lay o f output c ouplin g of output shaft Selectio n and inspecti on of ti