| HYDRAULIC PUMP FLOW RATE CHART | |||||||||
| Refer to Flow Calculator below for RPMs not shown on charts. | |||||||||
| TYPE A PUMP / SERPENTINE BELT / CLUTCH - 6" dia. | |||||||||
| SIZE | GALLONS PER MINUTE @ GIVEN RPM | ||||||||
| Rated GPM | cu. in. | 625 | 675 | 750 | 875 | 1000 | 1250 | 1500 | 1750 |
| 17 | 2.02 | 6.5 | 7.0 | 7.8 | 9.1 | 10.4 | 13.0 | 15.6 | 18.2 |
| 12 | 1.40 | 4.5 | 4.9 | 5.4 | 6.3 | 7.2 | 9.0 | 10.8 | 12.6 |
| 9 | 1.09 | 3.5 | 3.8 | 4.2 | 4.9 | 5.6 | 7.0 | 8.4 | 9.8 |
| 7 | 0.93 | 3.0 | 3.2 | 3.6 | 4.2 | 4.8 | 6.0 | 7.2 | 8.4 |
| 5 | 0.62 | 2.0 | 2.2 | 2.4 | 2.8 | 3.2 | 4.0 | 4.8 | 5.6 |
| (1600 RPM) | Typical RPM at Idle | ||||||||
| Cummins | Most | Most | Ford | ||||||
| diesel | diesel | gasoline | Triton | ||||||
| engine | engines | engines | engines | ||||||
| TYPE AA PUMP / SERPENTINE BELT / HUB CLUTCH - 5" dia. | |||||||||
| SIZE | GALLONS PER MINUTE @ GIVEN RPM | ||||||||
| cu. in. | 625 | 675 | 750 | 875 | 1000 | 1250 | 1500 | 1750 | |
| 0.73 | 2.8 | 3.0 | 3.4 | 3.9 | 4.5 | 5.6 | 6.8 | 7.9 | |
| 0.68 | 2.6 | 2.8 | 3.2 | 3.7 | 4.2 | 5.2 | 6.3 | 7.3 | |
| 0.61 | 2.4 | 2.5 | 2.8 | 3.3 | 3.8 | 4.7 | 5.7 | 6.6 | |
| 0.49 | 1.9 | 2.0 | 2.3 | 2.7 | 3.0 | 3.8 | 4.5 | 5.3 | |
| 0.43 | 1.7 | 1.8 | 2.0 | 2.3 | 2.7 | 3.3 | 4.0 | 4.6 | |
| Typical RPM at Idle | |||||||||
| Cummins | Most | Most | Ford | ||||||
| diesel | diesel | gasoline | Triton | ||||||
| engine | engines | engines | engines | ||||||
| TYPE A PUMP / V-BELT / STANDARD CLUTCH - 7 1/8" dia. | |||||||||
| SIZE | GALLONS PER MINUTE @ GIVEN RPM | ||||||||
| Rated GPM | cu. in. | 625 | 675 | 750 | 875 | 1000 | 1250 | 1500 | 1750 |
| 17 | 2.02 | 5.5 | 5.9 | 6.6 | 7.7 | 8.8 | 10.9 | 13.1 | 15.3 |
| 12 | 1.40 | 3.8 | 4.1 | 4.6 | 5.3 | 6.1 | 7.6 | 9.1 | 10.6 |
| 9 | 1.09 | 3.0 | 3.2 | 3.5 | 4.1 | 4.7 | 5.9 | 7.1 | 8.3 |
| 7 | 0.93 | 2.5 | 2.7 | 3.0 | 3.5 | 4.0 | 5.0 | 6.0 | 7.1 |
| 5 | 0.62 | 1.7 | 1.8 | 2.0 | 2.4 | 2.7 | 3.4 | 4.0 | 4.7 |
| (1800 RPM) | Typical RPM at Idle | ||||||||
| Cummins | Most | Most | Ford | ||||||
| diesel | diesel | gasoline | Triton | ||||||
| engine | engines | engines | engines | ||||||
| TYPE A PUMP / V-BELT / HEAVY-DUTY CLUTCH - 6 7/8" dia. | |||||||||
| SIZE | GALLONS PER MINUTE @ GIVEN RPM | ||||||||
| Rated GPM | cu. in. | 625 | 675 | 750 | 875 | 1000 | 1250 | 1500 | 1750 |
| 17 | 2.02 | 5.7 | 6.1 | 6.8 | 7.9 | 9.1 | 11.3 | 13.6 | 15.9 |
| 12 | 1.40 | 3.9 | 4.2 | 4.7 | 5.5 | 6.3 | 7.9 | 9.4 | 11.0 |
| 9 | 1.09 | 3.1 | 3.3 | 3.7 | 4.3 | 4.9 | 6.1 | 7.3 | 8.6 |
| 7 | 0.93 | 2.6 | 2.8 | 3.1 | 3.7 | 4.2 | 5.2 | 6.3 | 7.3 |
| 5 | 0.62 | 1.7 | 1.9 | 2.1 | 2.4 | 2.8 | 3.5 | 4.2 | 4.9 |
| (1800 RPM) | Typical RPM at Idle | ||||||||
| Cummins | Most | Most | Ford | ||||||
| diesel | diesel | gasoline | Triton | ||||||
| engine | engines | engines | engines | ||||||
| FLOW CALCULATOR: | |||||||||
| Change numbers in boxes to correct specs for a given clutch and pump and the RPM desired by customer. | |||||||||
| (The example given is for a serpentine clutch and 17 GPM pump at 1000 RPM.) | |||||||||
| FLOW (GPM) | = crank diameter (in.) | ÷ clutch diameter (in.) | ÷ conv. factor x effic. | x disp. (cu. in.) x | RPM | ||||
| 7.2 | 7.75 | 6 | 231 | 0.92 | 0.93 | 1500 | |||