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6.0 Maintenance
Absorber Water Pump Seal
A damaged water pump seal will usually cause signicant instability problems. If speed instability becomes
evident (+ 20 rpm in manual valve control mode), SuperFlow recommends this quick water seal test.
Pump Seal Leak Test
1. Place the dynamometer's load controller to minimum load. This ensures that the servo valve is wide
open.
2. Fully loosen the lock nut on capacity valve.
3. Turn the capacity valve fully counterclockwise (open).
4. Remove the capacity valve from the back of the absorber pump housing.
5. Fashion a cork or rubber stopper to t tightly into the seat of the stator housing. The cork or stopper
must be trimmed so that it does not protrude out of the seat more than 1/8".
6. Remove the seal bleed hose and compression tting from the T tting on the absorber.
7. Plug the open T tting where the seal bleed line was removed.
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