Citation V6-173 2.8L VIN Z 2-bbl HP (1983)
Figure 2 - Suspect Proportioner Valve
Suspect proportioner valves which are installed on cars to be campaigned can be identified as described in Figure 1, View A. In addition, the suspect
valves will have six character Julian Date Codes stamped in the valve body from FJ, RJ, FK or RK 2305 through 3035. See Figure 2, below.
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Valves with different machine marks than Figure 1, View A, are okay..
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Valves with the same machine marks as View A, but date codes lower than 2305 or higher than 3035, are okay.
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Valves received in service parts or campaign parts packages, regardless of their machine marks, are okay.
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Valves on cars with serial numbers lower or higher than the serial number breakpoints in bulletin 83C15, are okay.
Figure 2 - Suspect Proportioner Valve
Suspect brake proportioner valves have the following identification:
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Small "U" notches with no machine marks on hex of body.
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I.D. Code - FK, FJ, RK, or RJ.
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Date Codes from 2305 thru and including 3035.
Service Procedure
Part 1
Inspection Of Proportioner Valve
1.
Open vehicle hood and cover left-front fender.
2.
It may be necessary to clean the ends of the front and rear brake proportioner valves located in the master cylinder for inspection. If this is
