Service and Repair Manual April 2017Manifolds62 GTH-1056 Part No. 12781457-3Secondary Function Manifold ComponentsThe secondary function manifold is located under the manifold inspection cover.IndexNo. Description SchematicItem Function Torque1 DO3 valve, 3 position 4 way CA Steer left/right 60 in-lbs / 6.8 Nm2 Pressure reducing/relief valve, 50 psi /3.4 barCB Rear lock-up circuit 35 ft-lbs / 47.5 Nm3 Pressure reducing/relief valve, 400 psi /27.5 barCC Differential lock-upcircuit50 ft-lbs / 67.8 Nm4 Pressure reducing/relief valve, 2500 psi /172 barCD Steer circuit 50 ft-lbs / 67.8 Nm5 Pressure reducing/relief valve, 400 psi /27.5 barCE Drive brake circuit 50 ft-lbs / 67.8 Nm6 Solenoid valve, 2 position 3 way CF Parking brake select 20 ft-lbs / 27 Nm7 Solenoid valve, 2 position 4 way CG Rear axle fast oscillateselect50 ft-lbs / 67.8 Nm8 Check valve, 4 psi / 0.3 bar CH Rear lock-up extendcircuit25-30 ft-lbs / 34-40.7 Nm9 Check valve, 25 psi / 1.7 bar CI Drive brake circuit 25-30 ft-lbs / 34-40.7 Nm10 Pressure switch, 350 psi / 24 bar PS7 Low brake pressure 11 ft-lbs / 14.9 Nm11 Pressure switch, 250 psi / 17.2 bar PS6 Parking brake pressure 11 ft-lbs / 14.9 Nm12 Orifice, 0.059 in / 1.5 mm CJ Rear lock-up extendcircuit13 Orifice, 0.051 in / 1.3 mm CK Rear lock-up retractcircuit14 Check valve, 4 psi / 0.3 bar CL Rear lock-up retractcircuit25-30 ft-lbs / 34-40.7 Nm15 Diagnostic nipple CM Test port 'TB'16 Diagnostic nipple CN Test port 'TPB'17 Solenoid valve, 2 position 3 way CO Rear axle oscillateenable select20 ft-lbs / 27 Nm18 Solenoid valve, 2 position 3 way CP Differential lock-upselect20 ft-lbs / 27 Nm19 Diagnostic nipple CQ Test port 'TJ'20 Diagnostic nipple CR Test port 'TS'21 Diagnostic nipple CS Test port 'TR'
