Exploded View

WARNING: This page is about a different car, the 2008 Honda Pilot, 2007 Honda Pilot, and 2006 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exploded View Of Pump Overhaul With Torque Specifications

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Special Tools Required

Pulley holder 07ZAB-S5A0100
Attachment, 28 x 30 mm 07946-1870100
Driver 07749-0010000

Disassembly

NOTE: Refer to the EXPLODED VIEW as needed during the following procedure.

Drain the fluid from the power steering pump (see FLUID REPLACEMENT ).
Remove the power steering pump (see PUMP REPLACEMENT ).
Hold the power steering pump (A) in a vise with soft jaws (B), then hold the pulley (C) with the pulley holder (D), and remove the pulley nut (E) and pulley. Be careful not to damage the pump housing with the jaws of the vise.

Fig 2: Identifying Power Steering Pump, Pulley, Pulley Holder And Pulley Nut
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the inlet joint and O-ring.
Loosen the flow control valve cap with a hex wrench, and remove it and the O-ring, spring, and flow control valve.
Remove the pump cover and pump cover seal.
Remove the outer side plate, cam ring, rotor, vanes, side plate and O-rings.
Remove the snap ring, then remove the subvalve from the pump housing.
Remove the snap ring, then remove the driveshaft by tapping the shaft end with a plastic hammer.
Remove the pump seal from the pump housing.
Inspection
Check the flow control valve for wear, burrs, and other damage to the edges of the grooves in the valve.

Fig 3: Identifying Control Valve
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Inspect the bore of the flow control valve on the pump housing for scratches and wear.
Slip the flow control valve back in the pump housing, and check that it moves in and out smoothly. If OK, go to step 14; if not, replace the pump as an assembly. The flow control valve (A) is not available separately.

Fig 4: Checking Control Valve Movement
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Attach a hose (A) to the end of the flow control valve (B) as shown. Then submerge the flow control valve in a container of power steering fluid or solvent (C), and blow in the hose.
- If air bubbles leak through the valve at less than 98 kPa (1.0 kgf/cm² , 14.2 psi), replace the pump as an assembly. The flow control valve is not available separately.
- If the flow control valve is OK, set it aside for reassembly later.
  
  Fig 5: Checking Flow Control Valve
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
Inspect the ball bearing by rotating the outer race slowly. If you feel any play (axial or radial) or roughness remove the faulty ball bearing (A), and install a new one (B).

Fig 6: Checking For Faulty Ball Bearing
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Inspect each part shown with an asterisk in the Exploded View. If any of them are worn or damaged, replace the pump as an assembly.
Reassembly
Align the pin (A) of the subvalve (B) with the oil passage (C) in the pump housing, and push the subvalve into place, then install the snap ring (D).

Fig 7: Identifying Pin, Subvalve, Oil Passage And Snap Ring
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the new pump seal (A) (with its grooved side facing in) into the pump housing (B) by hand first, then drive it in using the attachment and the driver until there is no step at the top of the pump seal, and the seal is fully seated in the pump housing.

Fig 8: Identifying Pump Seal And Pump Housing
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Position the driveshaft (A) in the pump housing, then press it in with the appropriate size socket wrench (B) as shown.

Fig 9: Identifying Driveshaft And Socket Wrench
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the 40 mm snap ring (C) with its beveled edge facing out.
Coat the new pump cover seal (A) with power steering fluid, and install it into the groove in the pump cover (B).

Fig 10: Identifying Pump Cover Seal And Pump Cover
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the outer side plate (C) over the two roll pins (D).
Set the cam ring (A) over the two roll pins with the " " mark (B) facing down.

Fig 11: Identifying Cam Ring And Mark
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the rotor (A) to the pump cover (B).

Fig 12: Identifying Rotor And Pump Cover
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Set the 10 vanes (C) in the grooves in the rotor. Make sure that the round ends (D) of the vanes are in contact with the sliding surface of the cam ring.
Coat the new 15.2 mm O-ring (A) with power steering fluid, and install it into the groove in the side plate (B).

Fig 13: Identifying Vanes, Round Ends, O-Ring And Side Plate
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the side plate on the cam ring (C) by aligning the roll pin set holes (D) in the side plate with the roll pins (E).
Coat the new 51.0 mm O-ring (A) with power steering fluid, and position it in the bottom of the pump housing.

Fig 14: O-Ring And Pump Cover Assembly With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the pump cover assembly (B) in the pump housing. Tighten the bolts to the specified torque alternating in two or more steps.
Coat the flow control valve (A) with power steering fluid, then install it and the spring (B) in the pump housing.

Fig 15: Cap, Flow Control Valve And Spring With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Coat the new 16.7 mm O-ring (C) with power steering fluid, and install it on the flow control valve cap (D), then install the cap on the pump housing. Tighten it to the specified torque.
Coat the new 13.0 mm O-ring (A) with power steering fluid, and install it on the inlet joint (B). Install the inlet joint on the pump housing.

Fig 16: O-Ring, Flow Control Valve Cap And Inlet Joint With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the pulley (A), then loosely install the pulley nut (B). Hold the steering pump in a vise with soft jaws. Be careful not to damage the pump housing with the jaws of the vise.

Fig 17: Steering Pump, Pulley And Pulley Nut With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Hold the pulley with the pulley holder, and tighten the pulley nut to the specified torque.
Check that the pump turns smoothly by turning the pulley by hand. If it turns hard, loosen the four flange bolts on the cover, then retighten them in the same manner as in step 29. Turn the pump again by hand.