Specifications

Triumph Sickle Bar (Archive Book) 10/02

Parts Section -132

MODEL PARTS INFORMATION

Control Valves, Open Center & Closed center Systems

Open Center System

1. This used an add on Pump, Supplied by manufacturer (Alamo/Triumph) that was run off

the front of the Engine or PTO through a Speed Changer. This supplied the Pressure for

Hydraulic Cylinder Operation as well as to the Motor Operation.

2 This System Used an Aux. MountedTank for the Oil, There were three Tanks Used.

1 st. First was an Oblong Square type that was mounted to a Bracket using Straps,

This Tank has become obsolete and will have to be replaced with the second

tank by making modifications.

2 nd. Second was a larger Tank that is taller and has the Mounting Brackets welded to

it, This tank increased th Oil capacity by about one Gallon. This is also the Last

Tank Used for the Single Wing Models.

3 rd. This Tank was ONLY USED on the Dual Wing Models and is built basically the

same as thr 2 nd. Tank but with a larger Oil Capacity to accomodate the Dual

Wing units.

3. Governor rated @ 20 GPM Maximum Input. 8 GPM (9 GPM optional) priority Flow,

Excess flow returned to reservoir. Pressure drop approimately 50 PSI @ 8 GPM. was

only uded on the Open center models

4. Control Valve is a 3 Spool (one Valve) System for Cylinder & Motor Controls

Closed Center System

1. This WILL NOT use an add on Pump. The Hydraulic Oil & Pressure and Supply is

provided by the Tractor Hydraulic System for all functions

2. The Oil is from the Tractors internal Hydraulic Supply and NO EXTERNAL Hydraulic Tank

is used on this type.

3. The Governor is NOT USED on the Closed Center System, It is controled by the Valves

through restrictors & Check valves.

4. There are 2 control Valves Used, a 2 Spool Valve for Hydraulic Cylinder Controls and a

separate 1 spool Valve for Motor Control.

VALVE NOTES:

1. There were some Closed Center Systems that were converted to Open Center by

modifing the control Valves so the Closed Center could be moved to a Open Center

Tractor, See Control Valve Section for Parts that would have been used. All Models

shared the Control Valves, It is the Open Center or Closed Center Hyd. System that is

important.