Acura RL. Manual - part 747

Fig. 12: Acceleration System Construction Diagram 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Operation 

Acceleration and deceleration in a straight line 

1. The one-way clutch/low clutch connects the propeller shaft to the planetary gear carrier. The high 

clutch is disengaged by spring force.  

2. The propeller shaft, the planetary gear carrier, and the pinion gear all rotate at the same speed. 

 

2007 Acura RL 

2005-08 DRIVELINE/AXLES Rear Differential - RL

  

me 

 

Friday, June 05, 2009 3:02:18 PM

Page 15 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 13: Acceleration And Deceleration In Straight Line Diagram 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Acceleration system in a corner 

1. Hydraulic pressure from the solenoid valve engages the high clutch.  

2. The high clutch locks the planetary gears to the propeller shaft, and the driving force is increased to 

both rear wheels.  

3. The high clutch mechanically releases the low clutch. 

 

2007 Acura RL 

2005-08 DRIVELINE/AXLES Rear Differential - RL

  

me 

 

Friday, June 05, 2009 3:02:18 PM

Page 16 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 14: Acceleration System In Corner Diagram 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

ACCELERATION SYSTEM HYDRAULIC PRESSURE CONTROL 

Construction 

The hydraulic pressure system consists of the solenoid valve, the oil pump, the reverse one-way valve, the 
regulator valve, the shift valve, the accumulator, and the orifices.

 

2007 Acura RL 

2005-08 DRIVELINE/AXLES Rear Differential - RL

  

me 

 

Friday, June 05, 2009 3:02:18 PM

Page 17 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 15: Acceleration System Hydraulic Pressure Control System Diagram 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Operation 

Driving in a straight line 

The pressure regulator valve regulates the hydraulic pressure generated by the oil pump. Because the 
solenoid valve is off, hydraulic pressure is not applied to the high clutch piston, and it remains disengaged. 
If the hydraulic pressure overcomes the pressure regulator valve, the pressure is relieved from the pump 
circuit to reduce pump drive losses. 

 

2007 Acura RL 

2005-08 DRIVELINE/AXLES Rear Differential - RL

  

me 

 

Friday, June 05, 2009 3:02:18 PM

Page 18 

© 2005 Mitchell Repair Information Company, LLC.