WPT POWER WPD-02, Installation & Maintenance Manual

Page: 10 / 38

WIM-PD-002_B Page 10 of 38
4.2 Installing the Unit
4.2.1 Mount driving ring of the elastic coupling on the flywheel.
NOTE
Before mounting the PPD onto the engine, it is important to
check that flywheel is within SAE tolerances (see 4.1).
Following the provided technical specifications is recommended
for increased product life and safe operation. WPT recommends performing
a transmission line torsional
vibration analysis. Especially
when the driven machine is
equipped with an additional
elastic coupling.
NOTICE: Thermal dissipation of the PPD is designed for an ambient temperature of 122°F [50°C]
max. Ambient temperature should be measured at a distance about 7.9-11.8 inch [20-30 cm]. For
ambient temperatures above 122°F [50°C], oil temperatures must be monitored. Design of engine
enclosure must be well vented.
Figure 1
4.2.2 Locate a dial indicator as per Fig. 1 and set it to zero to detect an eventual flywheel
housing deflection.
4.2.3 Mount the PPD on the flywheel housing of the engine keeping in mind to align the teeth
of the elastic coupling in the respective teeth of the driving ring.
To align the PPD housing and flywheel housing, use three threaded rods with adequate lengths,
mounted 120° apart on the flywheel housing.
To perform this operation, lift the assembly. In cases where the group includes a power take-off or
hydraulic coupling, support the assembly adequately to ease alignment.
4.2.4 Carefully release the lifting force and properly shim as shown on Fig. 1 in order keep the
dial indicator at zero. If indicator changes after bolts are tightened, re-shim until indicator
remains at zero.