SkyTrak 6036 Service Manual - Manual (Page 151)

Section 9 Hydraulic System
Model 6036/6036T S/N 9B0500 thru 14833 9-1
SECTION 9
HYDRAULIC SYSTEM
Par. Title Page
Table of Contents
9.1 SYSTEM OPERATION ................... 9-2
9.2 MAIN CONTROL VALVE
OPERATION
CABLE CONTROL .......................... 9-2
9.2.1 Control Valve ......................................... 9-2
9.2.2 Boom Raise/Lower Circuit ..................... 9-4
9.2.3 Boom Extend/Retract Circuit .................. 9-7
9.3 MAIN CONTROL VALVE
OPERATION
ELECTRONIC CONTROL ............. 9-10
9.3.1 Electronic ............................................. 9-10
9.3.2 Control Valve ....................................... 9-10
9.3.3 Boom Raise/Lower Circuit ................... 9-13
9.3.4 Boom Extend/Retract Circuit ................ 9-15
9.4 SECONDARY CONTROL
VALVE OPERATION ..................... 9-16
9.4.1 Control Valve ....................................... 9-16
9.4.2 Grille Tilt and Slave Circuit ................... 9-17
9.4.3 Frame Tilt Circuit .................................. 9-21
9.4.4 Brake Circuit
(S/N 9B0500 thru 0E1179–Without
Transmission De-clutch Installed) ........ 9-24
9.4.5 Brake Circuit
(S/N 0E1180 and After–With
Transmission De-clutch Installed) ........ 9-26
9.4.6 Power Steering Circuit ......................... 9-29
9.4.7 Optional Auxiliary Circuit ...................... 9-32
9.5 CYLINDERS .................................. 9-35
9.5.1 Boom Hoist Cylinder ............................ 9-35
9.5.2 “TJB” Boom Hoist Cylinder .................. 9-36
Par. Title Page
9.5.3 “BHE” Boom Hoist Cylinder ................. 9-39
9.5.4 Boom Extend Cylinder ......................... 9-42
9.5.5 “TJB” Boom Extend Cylinder ............... 9-42
9.5.6 “BHE” Boom Extend Cylinder .............. 9-44
9.5.7 Slave Cylinder ...................................... 9-47
9.5.8 Grille Tilt Cylinder ................................. 9-50
9.5.9 Frame Tilt Cylinder ............................... 9-53
9.5.10 Steering Cylinder (S/N 3101 & Before) 9-56
9.5.11 Steering Cylinder (S/N 3102 & After) ... 9-59
9.5.12 Side Tilt Carriage Cylinder
(Optional) ............................................. 9-62
9.5.13 Swing Carriage Cylinder (Optional) ..... 9-65
9.6 VALVES ........................................ 9-68
9.6.1 Main Control Valve Assembly
(Cable Control) ..................................... 9-68
9.6.2 Main Control Valve Assembly
(Electronic Control) .............................. 9-72
9.6.3 Brake Valve .......................................... 9-82
9.6.4 Valve Plate Assembly .......................... 9-87
9.6.5 Brake Manifold Valve
(S/N 9B0500 thru 0E1179–Without
Transmission De-clutch Installed) ........ 9-87
9.6.6 Brake Manifold Valve
(S/N OE1180 and After–With
Transmission De-clutch Installed) ........ 9-88
9.6.7 Steer Select Valve ............................... 9-89
9.6.8 Priority Valve ........................................ 9-90
9.7 PUMPS ......................................... 9-91
9.7.1 Main Tandem Pump ............................. 9-91
9.8 TROUBLESHOOTING .................. 9-98
9.9 SPECIFICATIONS ...................... 9-110