Seal Leakage
WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
| 1 - PUMP |
| 2 - GEAR |
| 3 - INPUT SEAL |
| 4 - HOUSING SEAL |
| 5 - ACCUMULATOR SEAL |
| 6 - PISTON SEAL |
| 7 - SPOOL PLUG SEAL |
| 8 - RETURN PORT FITTING SEAL |
If the booster leaks from any of the seals the booster assembly must be replaced.
- INPUT ROD SEAL (3): Fluid leakage from rear end of the booster.
- PISTON SEAL (6): Fluid leakage from vent at front of booster.
- HOUSING SEAL (4): Fluid leakage between housing and housing cover.
- SPOOL VALVE SEAL (7): Fluid leakage near spool plug.
- RETURN PORT FITTING SEAL (8): Fluid leakage from port fitting.
HYDRAULIC BOOSTER DIAGNOSIS CHART
| CONDITION | POSSIBLE CAUSES | CORRECTION |
|---|---|---|
| Slow Brake Pedal Return | 1. Excessive seal friction in booster. | 1. Replace booster. |
| 2. Faulty spool valve action. | 2. Replace booster. | |
| 3. Restriction in booster return hose. | 3. Replace hose. | |
| 4. Damaged input rod. | 4. Replace booster. | |
| Excessive Brake Pedal Effort. | 1. Internal or external seal leakage. | 1. Replace booster. |
| 2. Faulty steering pump. | 2. Replace pump. | |
| Brakes Self Apply | 1. Dump valve faulty. | 1. Replace booster. |
| 2. Contamination in hydraulic system. | 2. Flush hydraulic system and replace booster. | |
| 3. Restriction in booster return hose. | 3. Replace hose. | |
| Booster Chatter, Pedal Vibration | 1. Slipping pump belt. | 1. Replace power steering belt. |
| 2. Low pump fluid level. | 2. Fill pump and check for leaks. | |
| Grabbing Brakes | 1. Low pump flow. | 1. Test and repair/replace pump. |
| 2. Faulty spool valve action. | 2. Replace booster. |