Subaru Impreza 2003 Service Manual page 2209

B: INSTALLATION
Install in the reverse order of removal.
1) Install the air breather cap tapping with a plastic
hammer.
NOTE:
Be sure to install a new air breather cap.
2) Position the front member on body by passing it
under the parking brake cable and securing to rear
differential.
NOTE:
When installing the rear differential front member,
do not confuse the installation sequence of the up-
per and lower stoppers.
3) Install the DOJ of drive shaft into rear differential.
<Ref. to DI-71, REPLACEMENT, Rear Differential
Side Oil Seal.>
ST 28099PA090 SIDE OIL SEAL PROTEC-
TOR
4) Installing procedure hereafter is in the reverse
order of removal.
5) After installation, fill the differential carrier with
gear oil to the filler plug level. <Ref. to DI-25, Differ-
ential Gear Oil.>
REAR DIFFERENTIAL FOR T-TYPE
ST
DI-00060
DI-29
C: DISASSEMBLY
1. EXCEPT STi MODEL
To detect the real cause of trouble, inspect the fol-
lowing items before disassembling.
• Tooth contact of crown gear and pinion, and
backlash
• Runout of crown gear at its back surface
• Turning resistance of drive pinion
1) Set the ST on vise and install the differential as-
sembly to ST.
ST 398217700 ATTACHMENT
2) Drain the gear oil by removing the plug.
3) Remove the air breather cap.
NOTE:
• Do not attempt to remove the air breather cap
unless necessary.
• When removing the air breather cap, replace the
air breather cap with a new one.
(A) Air breather cap
(B) Rear cover
DIFFERENTIALS
ST
DI-00061
(A)
(B)
DI-00062