Acura 3.5 RL Manual page 654

5. Remove the differential carrier from the differential
case.
DIFFERENTIAL CASE
6. Remove the oil guide pipe.
OIL GUIDE
PIPE
DIFFERENTIAL CARRIER
7. Hold the drive pinion with a 1 1/4" (32 mm) hex bit
and socket as shown.
DRIVE PINION
1 1/4" (32 mm) HEX BIT and SOCKET
(Commercially available)
8. Raise the locknut tab from the groove of the drive
pinion, and remove the locknut, thrust washer and
pinion hub.
NOTE: Be sure the tab of the locknut is completely
clear of the groove or damage to the threads can
occur.
TAB
LOCKNUT
Replace.
THRUST WASHER
PINION HUB