Cvt Oil Pump - Subaru XV Crosstrek Hybrid 2014 Technicians Reference Booklet

2014 XV Crosstrek Hybrid
(Module 702)

CVT Oil Pump

The Lineartronic™ Hybrid CVT requires two new methods of supplying the oil pressure required
to operate the pulleys and clutches.
During EV Mode, the engine is off and the conventional method of driving the oil pump is not
available. Oil pressure must be maintained to change pulley ratios and to maintain tension on the
drive chain.
During normal engine drive, the torque converter impeller housing drives the oil pump drive gear.
This is the conventional method of driving the CVT oil pump. The drive gear operates a chain that
rotates the driven gear. The driven gear is splined to the oil pump drive shaft.
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Oil Pump Drive Oil Pump
A second mechanical oil pump drive system has been installed into the Hybrid CVT. A second oil
pump drive shaft is installed into the back side of the oil pump that is driven from a gear set and
chain powered by the rotation of the Primary Pulley.
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New Oil Pump Drivens Sprocket
Each driven gear is equipped with a one-way clutch that allows the slower drive shaft to become
ineffective.
The new mechanical oil pump drive system functions during deceleration whenever the Primary
Pulley speed is greater than engine speed and during Regenerative Braking.
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