C-II Power Steering Pump (E7TZ-3A674-BBRM) uses Motorcraft MERCON(TM) ATF XT-2-QDX or MERCON(TM) equivalent.
IF THE IMAGE IS TOO SMALL, click it.
The C-II power steering pump (3A674) is a belt-driven, slipper-type pump with a fiberglass reinforced nylon power steering oil reservoir (3A697). The power steering oil reservoir is attached to the rear side of the pump housing front plate and the power steering pump housing (3A643) is encased within the housing and reservoir. The power steering pressure hose (3A719) is attached with a quick connect fitting, located below the filler neck at the outboard side of the power steering oil reservoir. The fitting allows the line to swivel. This is normal and does not indicate an untorqued fitting.
A pressure sensitive identification tag is attached to the power steering oil reservoir. The top line of this tag indicates the basic model number and the suffix.
Note: Always use the tags when requesting service parts as there may be slight differences in internal components.
Using a Ford D79L33610A/D81T33610A or Rotunda 01400207/01400230 Power Steering System Analyzer, pressure at 74-79C (165-175°F) should be above 1034 kPa (150 psi).
Ford C2 - - - - - - Minimum Flow @ 740 psi - - - - - - - Minimum Pressure Relief - - Maximum Pressure Relief
Pump Model - - - Liters/Minute - - Gallons/Minute - - - kPa - - - - - - - - psi - - - - - - - kPa - - - - - - psi
- - - - - - - - - - - - - 76C ~ 15C - - - 170°F ~ 5°F - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
HBC-JX (F/U) - - - - - 5.3 - - - - - - - - - - 1.4 - - - - - - - - 9650 - - - - - - 1400 - - - - - - 10550 - - - - 1530
HBC-JY (F/U) - - - - - 5.7 - - - - - - - - - - 1.5 - - - - - - - - 10000 - - - - - - 1450 - - - - - - 10550 - - - - 1530
HBC-KK (E) - - - - - - 5.3 - - - - - - - - - - 1.4 - - - - - - - - - 9650 - - - - - - 1400 - - - - - - 10550 - - - - 1530
See also:
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Purging Power Steering System of Air
A whine noise heard from the power steering pump (3A674) may be caused by air in the system. The following service procedure must be performed whenever any of the following services are performed:
- All power steering noise complaints with evidence of aerated fluid prior to any component service.
- Any power steering system component (gear, hose etc.).
NOTE: If the air is not purged from the power steering system correctly, a second customer concern or pump failure could result. This condition can occur on predelivery vehicles with evidence of aerated fluid or vehicles that have had steering component service.
Fluid Level Top-Off Procedure
1. Check and fill power steering oil reservoir (3A697) to dipstick FULL COLD.
2. Disable ignition by disconnecting the EDIS/DIS/TFI module or, for remote TFI, disconnect CMP/Hall effect/PIP sensor.
3. NOTE: On 7.3L Diesel vehicles, the fuel shutoff solenoid (on the injection pump) must be disconnected to prevent starting. Crank engine 30 seconds, check fluid level and add if required.
4. Crank engine 30 seconds while cycling the steering wheel lock to lock. NOTE: DO NOT hold steering wheel on stops.
5. Check fluid level and add fluid if required.
DEVAC System
Fabricate a DEVAC purging tool as shown for Ford C-II pump.
The procedure for removing entrapped air is as follows:
1. Check the power steering oil reservoir to make certain the fluid level is correct (add fluid if low, siphon out fluid if level is above full mark).
2. Disable the ignition by disconnecting coil wire or ICM.
3. NOTE: Shutoff solenoid (on the injection pump) must be disconnected to prevent starting. Crank the engine 30 seconds, check fluid level and add if required.
4. Crank engine 30 seconds while cycling the steering wheel lock to lock. Do not hold steering wheel on stops.
5. Check fluid level and add fluid if required.
Air Purge With External Vacuum Source Procedure
1. Tightly insert the rubber stopper of the air evacuator assembly into pump reservoir.
2. Reconnect connection used to disable ignition. Start vehicle.
3. Apply 20-25 in-Hg (68-85 kPa) maximum vacuum for minimum of three minutes at idle; maintain maximum vacuum with source.
4. Release vacuum and remove vacuum source.
5. Add fluid to FULL COLD or reservoir center mark.
6. Reinstall vacuum source and apply 20-25 in-Hg (68-85 kPa) vacuum.
7. Cycle steering wheel from lock to lock every 30 seconds for approximately 5 minutes. Do not hold steering wheel on stops.
8. Shut engine off, release vacuum, remove vacuum source.
9. Add fluid if necessary; install dipstick or power steering pump oil reservoir filler cap (3A006).
10. Start engine and cycle steering wheel (3600) from lock to lock every 30 seconds for approximately five minutes. Do not hold the steering wheel on stops.
11. Check for oil leaks at all connections.
12. In severe cases it may be necessary to repeat air purge with vacuum source procedure.
Start-Up Procedure After Power Steering Pump or Gear Service
Upon initial engine start-up after a power steering pump or steering gear (3504) overhaul (particularly the power steering pump), there is very frequently much noise and aeration. This is due to air trapped in the overhauled unit which mixes with the surging fluid and causes aeration. The problem can be minimized using the following procedure.
Diesel Engines
1. Fill the power steering oil reservoir and start the engine (6007).
2. Cycle the wheel (1007) from stop to stop.
3. Shut the engine off and add fluid to bring the power steering oil reservoir to the FULL mark.
Gasoline Engines
1. Disconnect the ignition control module (ICM) (12K072) to prevent engine from starting.
2. Fill the power steering oil reservoir.
3. NOTE: Be careful to avoid prolonged cranking as the battery may be drained and the starter motor (11001) damaged. Crank the engine with the starter motor and continue adding fluid until the level remains constant.
4. Rotate the steering wheel approximately 30 degrees each side of center while continuing to crank the engine.
5. Recheck the fluid level and fill as required.
6. Reconnect the ICM.
7. To clear fault codes, disconnect battery for one minute and then reconnect battery.
8. Start the engine and allow it to run for several minutes.
9. Rotate the steering wheel from stop to stop.
10. Shut off the engine and recheck the fluid level, add as required.
