THIS IS A CAT HYDRAULIC CONTROLS SERVICE MANUAL,183, S/N 36E1-UP, 172 S/N 25G1-UP, 171,173 S/N 48C1-UP,193  91F1-UP,192 S/N 42F1-UP THIS HAS D8 AND D9 MACHINES, MY DOG CHEWED THE COVER UP , BUT IN VERY GOOD CONDITION,  THANK YOU VERY MUCH!!!!!!!!!!!!!!

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