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Home >> Ford >> 2012 >> Explorer Base, 2.0 9 >> Repair and Diagnosis >> External Pages >> Different car >> Section 233 (Transfer Case - Power Transfer Unit) >> Description And Operation >> Transfer Case - Power Transfer Unit (PTU) >> System Operation
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System Operation

WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

The PTU  is a gearbox attached to the transaxle. The RH intermediate shaft passes through the PTU  and engages the differential side gear, similar to FWD applications. The PTU  directs power to the rear driveshaft through a helical gear spline coupled to the transaxle differential case, a helical gear drop (idler gear) and hypoid/helical ring gear assembly and pinion set. The PTU  is sealed from the transaxle and has its own oil sump.

The internal components are not serviceable. Do not remove the cover of the PTU  . If any of the geared components, bearings, case cover or internal shafts are worn or damaged, a new PTU  must be installed.

The following components of the PTU  are serviceable:

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