Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Impreza 2001-2002.2004-2007 Approved Subaru Impreza 2004 WRX STi 08. MECHANISM AND FUNCTION 40. DIFFERENTIALS 01. Rear Differential
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>> Download 01. Rear Differential documenatation <<Text preview - extract from the documentW1860BE.book Page 2 Tuesday, January 28, 2003 11:01 PM
REAR DIFFERENTIAL
DIFFERENTIALS
1. Rear Differential
A: EXCEPT STi MODELS
The drive gear is a hypoid gear with nominal diameter of 160 mm (6.30 in). The drive pinion shaft
is supported by three bearings. The bearing preload is adjusted by selecting a spacer and washer
combination of a proper thickness. The drive pinion height is adjusted by properly selecting the
thickness of the washers located at the drive pinion neck using a dummy shaft and gauge.
DI-00231
DI-2
W1860BE.book Page 3 Tuesday, January 28, 2003 11:01 PM
REAR DIFFERENTIAL
DIFFERENTIALS
B: STi MODELS
The drive gear is a hypoid gear with nominal diameter of 180 mm (7.09 in). The drive pinion shaft
is supported by three bearings. The bearing preload is adjusted by selecting a spacer and washer
combination of a proper thickness. The drive pinion height is adjusted by properly selecting the
thickness of the washers located at the drive pinion neck based on the value stamped on the drive
pinion shaft rear end.
To deal with the enhanced engine power, the diameter of the companion flange (joint to the propeller
shaft) is increased for additional rigidity.
Moreover, the rear differential oil temperature switch opens when the rear differential oil temperature
exceeds 150
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