Logan Bell Housing PTO Hydraulic and Pneumatic Schematics

Hydraulic Actuation

Operation: Logan Bell Housing PTO’s require a 3-way normally closed operating valve with a system flow rate of 2 gpm (7.5 liters) to ensure proper response time during clutch actuation; (if the solenoid is not activated, fluid will not pass through the valve).

Gen. I and Gen. III Actuation: A pressure switch must be installed in the inlet line to ensure that a minimum of 150 psi (10.3 bar) and a maximum of 250 psi (17.2 bar) is available prior to clutch engagement. Pressures exceeding 250 psi (17.2 bar) may cause back plate deflection and premature clutch failure. A 20-micron filter element should also be installed in the supply line, before the valve, to minimize excessive dirt, oil and moisture.

Gen. II Actuation: A pressure switch must be installed in the inlet line to ensure that a minimum of 275 psi (10.3 bar) and a maximum of 350 psi (17.2 bar) is available prior to clutch engagement.

If a hydraulic source is not readily available on your equipment, Logan suggests using a hydraulic pump capable of producing 2 gpm at 250 psi (17.2 bar); for Gen I and Gen II clutches, we recommend a 2 gpm pump at 350 psi. (24 bar).

 

Pneumatic Actuation

Operation: Logan Bell Housing PTO’s require a 3-way normally closed operating valve to function properly, (if the solenoid is not activated, air will not pass through the valve). A pressure switch must be installed in the inlet line to ensure that a minimum of 100 psi (6.8 bar) is available prior to clutch engagement. A 20-micron filter element should also be installed before the switch to minimize excessive dirt, oil and moisture.

If an air source is not readily available on your equipment, Logan suggests using an air compressor capable of producing
0.14 SCFM at 100 psi (6.8 bar).
 

Logan Hydraulic or Pneumatic Start-up Kits

The Logan Hydraulic or Pneumatic Start-up kits are designed to simplify Logan clutch installation and to ensure reliable and
accurate engagement of the Logan PTO.

Pneumatic Valving: Logan offers a solenoid activated, normally closed, 3-way directional control valve with a 3/64” inlet and outlet port. Valves are available in 12 or 24 volt DC.

Hydraulic Power Packs: For vehicles that are not equipped with an air or fluid source, Logan does offer a power pack kit. Consult Logan factory for more details.
 

Pneumatic Schematic


 

Hydraulic Schematic

Logan offers fluid and air actuated valve manifolds complete with gauge and pressure switch to ensure reliable and accurate engagement of the Logan PTO

 

 

Manifolds:

Logan offers fluid and air actuated valve manifolds complete with gauge and pressure switch to ensure reliable and accurate engagement of the Logan PTO

 

 

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