Subaru XT 1988 Service Manual page 987

4-4 BRAKES
Pedal force
Fluid pressure
N (kg, Ib)
kPa (kg/cm
2
,
psi)
147 (15, 33) 392 (4,57)
294 (30,66)
Except XT6: 2,452 (25, 356)
XT6: 1,569 (16,228)
Boosting action check
Set the vacuum gauge reading at 66.7 kPa (500 mmHg, 19.69
inHg) by running engine. Then, check the fluid pressure when
brake pedal is depressed. The pressure must be greater than the
standard value listed below.
Pedal force
Fluid pressure
N (kg, Ib)
kPa (kg/cm
2
,
psi)
147 (15,33)
Except XT6: 4,904 (50, 711)
XT6: 5,394 (55, 782)
294 (30,66)
Except XT6: 6,375 (65,924)
XT6: 9,317 (95,1,351)
HANDLING PRECAUTIONS
1) After protector has been removed from push-rod, do not
turn the master cylinder side of brake booster downwards.
(1) If the master cylinder side is turned downwards,
push-rod may come loose by virtue of its own weight, and
reaction disc may drop into brake booster.
(2) Whether or not reaction disc has dropped can be
determined by measuring the dimension fll".
The projected amount ilL" of pushrod should be as
follows:
Standard (Correct): L
=
9.3 mm (0.366 in) (Except XT6)
10.0 mm (0.394 in) (XT6)
Incorrect: L
=
4.8 mm (0.189 in) (Except XT6)
4.4 mm (0.173 in) (XT6)
L4-1352
Fig. 98 Push rod projection
(3) If protector is fitted correctly, reaction disc will not
2) Be careful not to drop brake booster. Brake booster
should be discarded if it has been dropped.
3) Use special care when handling operating rod.
If excessive force is applied to operating rod, sufficient to
cause a change in the angle in excess of
± 3°,
it may result in
damage to the power piston cylinder.
4) Use care when placing brake booster on the floor.
~orce
{ }
Fig. 99 Handling precaution
Brake Hose
REMOVAL
If external force is applied from
above when brake booster is
placed in this position, the resin
portion as indicated by "P", may
be damaged.
L4-1353
1)
Separate brake pipe from brake hose.
(Always use flare nut wrench and be careful not to deform
flare nut.)
Brake hose
Fig. 100 Separating brake pipe
fall out. 2) Pullout clamp to remove brake hose.
40