SENR21228 Page, UHE

©1980CaterpillarAll Rights Reserved

Printed in U.S.A.

SENR2122April 1980

12G, 130G & 140G

Hydraulic System

61M1-6939

Motor Graders

72V1-372174V1-1524

SENR21228 Page, UHE

1 CYLINDER FOR WHEEL LEAN2 CYLINDER FOR CENTER SHIFT3 CYLINDER FOR BLADE LIFT4 CYLINDER FOR BLADE SIDE SHIFT5 CYLINDER FOR BLADE TIP6 CYLINDER FOR ARTICULATION7 CYLINDER FOR STEERING (L.H.)8 CYLINDER FOR STEERING (R.H.)9 METERING VALVE FOR STEERING (PUMP)10 COMBINATION VALVE11 RELIEF AND REDUCING VALVE12 UNLOADING VALVE13 RELIEF VALVE FOR COOLER14 IMPLEMENT PUMP15 VARIABLE DISPLACEMENT PUMP16 PUMP FOR COOLING17 COOLER18 CONTROL VALVE19 CONTROL VALVE20 VALVE FOR ARTICULATION21 VALVE FOR CENTER SHIFT22 VALVE FOR WHEEL LEAN23 VALVE FOR BLADE LIFT24 VALVE FOR ATTACHMENT25 VALVE FOR ATTACHMENT26 VALVE FOR BLADE TIP27 VALVE FOR CIRCLE DRIVE28 VALVE FOR BALDE SIDE SHIFT29 VALVE FOR ATTACHMENT30 VALVE FOR ATTACHMENT31 LOCK CHECK VALVE32 LOCK CHECK VALVE (WIITH COKE)33 LOCK CHECK VALVE (WITH COKE & RELIEF34 RELIEF VALVE FOR STEERING35 HYDRAULIC MOTOR FOR CIRCLE DRIVE36 CYLINDER FOR RIPPER37 HYDRAULIC TANK38 FILTERS39 SWIVEL40 ACCUMULATOR41 LOCK CHECK VALVE42 PILOT VALVE43 CYLINDER FOR DOZER OR PLOW44 LOCK CHECK VALVE (WITH CHOKE)45 CYLINDER FOR SCRAPER

A PUMPB SIGNAL LINEC REDUCTION VALVE

CHART PRSSURE TAPS