Proportioning Valve Function Test - Mitsubishi 1989-1993 GALANT Service Manual

SERVICE BRAKES
Pressure
Pressure
S p l i t p o i n t ,,s*"
Outpur
pressure
Input pressure
PROPORTIONING VALVE FUNCTION TEST M~KKAK
1. Connect two pressure gauges, one each to the input side
and output side of the proportioning valve, as shown.
2. Bleed the air from the brake line and the pressure gauge.
3. While gradually depressing the brake pedal, make the
following measurements and check to be sure that the
measured values are within the allowable range.
(1) Output pressure begins to drop relative to input
pressure (split point).
Standard value:
<Up to 1990.5 models>
Standard value:
<From 1991 models>
AWD
brake lines
Limit: 0.4 MPa (57 psi)
4. If the measured pressures are not within the permissible
ranges, replace the proportioning valve.
TSB Revision
3.95-4.45 Mpa (561-633 psi)
4.95-5.45 Mpa (704-775 psi)
FWD-SOHC 3.95-4.45 Mpa (561-633 psi)
FWD-DOHC
3.45-3.95 Mpa (491-561 psi)
AWD 4.95-5.45 Mpa (704-775 psi)
FWD
5.15-5.65 Mpa (732-804 psi)
[at 8.2 Mpa (1,163 psi)]
FWD
AWD
[at
9.2 Mpa (1,309 psi)]
FWD-SOHC
[at 8.2 Mpa (1,163 psi)]
FWD-DOHC
4.65-5.15 Mpa (661-732 psi)
[at
7.7 Mpa (1,095 psi)]
[at 9.2 Mpa (1,309 psi)]