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Installation and Maintenance Bulletin
HPTO10TD-100
May 7, 2003
Hydraulic Power Take-off
Page 1 of 1
Rotating equipment is potentially dangerous and should be properly guarded. The
user should check all applicable safety codes and provide suitable guards.
The HPTO™ Hydraulic Power Take-off is
a hydraulically actuated, enclosed dry
clutch that requires no adjustment
throughout its wear life. During a torque
spike, the clutch will act as a torque limiter
by slipping to absorb the shock load. The
bearings in the clutch are greased for the
life of the product.
A
Microprocessor Controller provides
remote push button controlled clutch
engagement of the HPTO. The controller
is capable of monitoring clutch pressure,
engine speed, and an equipment safety
switch. The controller features an ISO
standard symbol display with LED’s that
light to indicate system conditions.
Refer to Controller I&M Bulletin for
complete information regarding
controller installation, operation, and
troubleshooting.
A
Hydraulic Manifold Assembly controls
the pressure required for clutch
engagement. Critical system components
such as: a DC coil, pressure regulating
cartridge, and a pressure switch are
included in the manifold assembly.
TORQUE SETTING
The precise setting of the hydraulic
pressure acting on the internal piston
controls the torque of the HPTO clutch.
Alternate torque settings are available for
various engine requirements. Consult PT
Tech® if a change of torque setting is
necessary.
MOUNTING AND ORIENTATION
The HPTO is manufactured to mount to
SAE #3 flywheel housing. It will
accommodate the following flywheels.
•
SAE J620d 11-1/2 Industrial engine
•
SAE J618 12” Automotive style *
•
SAE J618 13” Automotive style *
* NOTE: Adaptor ring is needed for
automotive style flywheels. Contact PT
Tech for selection.
PRE-INSTALLATION CHECK
Prior to installation, the following should be
checked:
1. Check that the location of the sheave
matches with the location of the driven
equipment sheave. Consult PT Tech
for belt load and centerline distances.
Note: maintaining this distance will
provide for designed bearing life.
2. Check the mounting surfaces and the
bolt holes to make sure that they are
clean. This is important for a proper
connection.
3. Verify that the gear pump on the
customer’s equipment is live when the
engine is idling.
ATTENTION:
hydraulic system pressure must be
present for the engagement of the
clutch. A minimum of 400 psi is
required at all times.