Subaru XT 1988 Service Manual page 635

3-2
AUTOMATIC TRANSMISSION AND DIFFERENTIAL
(3) Make sure that the clearances are within the specified 3) Install the return spring and retainer between the housing
wear limits. If the wear limit is exceeded, select pump and cam ring.
components so that the standard clearance can be
obtained.
Wear limit
Standard value
Rotor, control
0.054 mm 0.030 - 0.044 mm
piston, vanes (0.0021 in) (0.0012 - 0.0017 in)
Cam ring
0.034 mm 0.010 - 0.024 mm
(0.0013 in) (0.0004 - 0.0009 in)
Select vanes which are the same height as the rotor.
ASSEMBLY
1)
Coat both the O-ring and friction ring with vaseline and
attach to the cam ring. Then fit them into the oil pump
housing.
Friction ring
L3-682
Fig. 181
2) Install the vane ring, rotor, vanes, and vane ring into the
housing in this sequence.
L3-683
Fig. 182
L3-684
Fig. 183
4) Install the control piston to the oil pump housing.
Fit the seal in the piston groove, with the red seals facing the
top side. (Two side seals and one plain seal are attached.)
L3-685
Fig. 184
5)
Set the rotor at the center of the housing bore. Apply
ATF abundantly to each rotary portion.
6)
Install the oil pump cover.
Tightening torque:
25
±
2 N·m (2.5
±
0.2 kg-m, 18.1
±
1.4 ft-Ib)
108