Forward Delay Valve
Apply constant vacuum of 10 in. Hg to black side of delay valve. Attach a vacuum gauge (using a 24 INCH section of vacuum hose) to colored side of valve. Count time in seconds for vacuum gauge to read 8 in. Hg with a constant vacuum of 10 in. Hg applied to black side of valve. Compare times with those shown in table. If incorrect, replace valve.
Forward Delay Valve Flow Test
| Color | Minimum | Time in Seconds Maximum |
|---|---|---|
| Blk/Gray | 0.6 | 1.6 |
| Blk/Brown | 1.0 | 3.0 |
| Blk/White | 2.7 | 9.3 |
| Blk/Yellow | 4.5 | 13.2 |
| Blk/Purple | 0.3 | 1.0 |