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TM 10-3930-669-20
PRESSURE TEST
(1)
Disconnect brake line and fitting
from master cylinder (Para 11-4).
(2)
Connect 0 to 2,000 psi (0-13,790
kPa) pressure gauge to master
cylinder.
(3)
Depress brake pedal and observe
gauge.
(a)
If 1,100 to 1,200 psi (7,584 -
8,274 kPa) are not present,
perform Step (4) below and
replace master cylinder.
(b)
If pressure drops at 90 psi (621
kPa) or higher, relief valve is
OK.
(4)
Remove 0 to 2,000 psi (0-13,790
kPa) pressure gauge.
(5)
Connect
brake
line
on
master
cylinder.
2-397
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