Opel Insignia: Description and Operation
POWER TRANSFER UNIT CASE IDENTIFICATION
The power transfer unit primary identification label (1) is located on the
rear extension housing. The power transfer
unit secondary identification stamping (2) is located on the bottom of the main
housing.
Transfer Case Primary Identification Label
- GM Part Number
- Broadcast Code
- Supplier Manufacturing Location
- VPPS
- Broadcast Code / Trace Code
Transfer Case Secondary Identification Stamping
- GM Part Number
- Build Hour
- Daily Build Count
- Day of the Year
- Model Year
- BOM Code
POWER TRANSFER UNIT CASE DESCRIPTION AND OPERATION
General Description
The power transfer unit is positioned in the right side of the vehicle and
mounts to the transmission and the engine.
The primary function of the power transfer unit is to receive power from the
transmission and transfer it using
helical and hypoid gear sets through the propeller shaft to the rear
differential. The power transfer unit main housing,
extension housing, and rear output shaft housing are of a cast aluminum design.
External Components
- Power Transfer Unit weep hole location - Main Case
- Power Transfer Unit Vent Hose Assembly
- Power Transfer Unit Input Shaft - Transmission Input
- Power Transfer Unit weep hole location - Extension Housing
- Power Transfer Unit Intermediate Drive Shaft - Right Axle Shaft
- Intermediate Drive Shaft Oil Seal
- Power Transfer Unit Oil Fill Plug
- Power Transfer Unit Oil Drain Plug
- Power Transfer Unit Rear Output Shaft
Internal Components
The OD splines of the input shaft (4) are mated to the ID splines of the
transmission output shaft. Power and torque
are transferred from the input shaft (2) to the idler shaft (6) via a helical
gear set. A second gear set, the hypoid gear
set transfers power and torque from the idler shaft to the rear output shaft
(1). The propeller shaft is mated to the rear
output shaft providing power and torque to the rear drive axle. The OD splines
of the intermediate drive shaft (3)
mate to the ID splines of the transmission carrier assembly and provide power
and torque to the right front axle shaft
and wheel.
Gear tooth clearances and bearing preloads are maintained by shims located
behind the bearing races. The housings,
internal gears, and bearings are not serviceable components. If housing, gear
set, or bearing damage occurs, the
assembly must be replaced.
- Power Transfer Unit Rear Output Shaft
- Power Transfer Unit Input Shaft
- Power Transfer Unit Intermediate Drive Shaft-to-Transmission Splines
- OD Splines of the Input Shaft
- Power Transfer Unit Input Shaft Seal - Front
- Power Transfer Unit Idler Shaft
- Power Transfer Unit Input Shaft Seal - Rear
- Power Transfer Unit Cover-to-Intermediate Drive Shaft Seal-at-Extension
Housing
- Power Transfer Unit Intermediate Drive Shaft
READ NEXT:
SPECIAL TOOLS
DT - 113 - 2 - A
J - 03289-20
KM - 113-2-A
Holding Fixture
DT-305-1
J-42176
KM-305-1
Driver Handle
DT - 26941
J - 26941
Bushing and Bearing
Remover - 3 - 4 in.
DT - 29369 - 1
J - 2936
SCHEMATIC AND WIRING DIAGRAMS
SHIFT LOCK CONTROL WIRING SCHEMATICS
Shift Lock Control
DIAGNOSTIC INFORMATION AND PROCEDURES
DTC B270A
Diagnostic Instructions
Perform the Diagnostic System Check pri
SPECIFICATIONS
FASTENER SPECIFICATIONS
Single Use Non-Threaded Fasteners/Components
NOTE:
All fasteners/components listed in this table MUST BE DISCARDED and replaced
with NEW after removal.
Applicati
SEE MORE:
Tire Pressure Indicator Sensor Replacement
Removal Procedure
1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the
Vehicle.
2. Remove the tire and wheel assembly.
3. Dismount the tire from the rim.
4.
NOTE: Never fit the tire pressure indicator sensor on unapproved wheel
r
MODEL COVERAGE
Model Coverage
Insignia 2011-19
Verano 2012-17
DESCRIPTION & OPERATION
NOTE: The TPMS sensor Relearn procedure must be performed after every
tire
rotation, BCM replacement, or sensor replacement.
TIRE PRESSURE MONITOR (TPM) SYSTEM
The tire pressure monitor system uses the ins