Cub Cadet P Series User Manual

Page 22

P Series

note: Raising the system oil temperature will make a difference in the readings you receive. It has been

determined that to complete this test accurately, the oil temperature must be near system operating temperatures.

Suggested temperature range is 160°- 210°F (71.1° - 98.9°C).

8. On the PC, PG, PE, PJ, PK, PL, PR and PW, tighten the flow meter restriction valve until the gauge reads 300

psi (21bar). Record the flow reading on the Bi-Directional Flow Meter.

9. Increase the pressure to 1100 PSI (76 bar) for all models (PC, PG, PJ, PK, PL, PR and PW). Record the flow

reading on the Bi-Directional Flow Meter.

10. The acceptable gpm “flow droop” or (difference) is:

1.0 gpm (3.7 l/min)

PG/Pl/Pe

1.5 gpm (5.6 l/min)

PJ/PK

2.0 gpm (7.6 l/min)

2.5 gpm (9.4 l/min)

If the difference exceeds these values the pump would not be operating efficiently and should be repaired or

replaced.

teSt eXamPle: PG/Pl

300 psi (21 bar) reading 7 gpm (26 l/min) (1st reading)

1100 PSI (76 bar) reading 3 gpm (11 l/min) (2nd reading)

(PG/Pl/Pe)

300 psi (21 bar) reading 7 gpm (26 l/min) (1st reading)

1100 psi (76 bar) reading -3 gpm (11 l/min) (2nd reading)

4 gpm (15 l/min) (the difference)

Subtract the 1st reading from the 2nd.

(In this example, 4 gpm difference would

indicate further pump examination).