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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

COMPONENT LOCATION INDEX

Fig. 1: Identifying Hydraulic Power Steering Components Location SYMPTOM TROUBLESHOOTING INDEX

Find the symptom in the chart below, and do the related procedures in the order listed until you find the cause. SYMPTOM TROUBLESHOOTING INDEX Symptom Procedure(s)

Also check for 

Modified

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

suspension  Damaged Troubleshoot the system (see Symptom suspension Hard steering Troubleshooting ).  Tire sizes, tire varieties, and air pressure Assist Front wheel (excessively light Check the rack guide adjustment (see alignment (see steering at high RACK GUIDE ADJUSTMENT ). WHEEL speed) ALIGNMENT ) 1. Check the rack guide adjustment (see RACK GUIDE ADJUSTMENT ). 2. Check the drive belt for slippage (see DRIVE BELT INSPECTION ). Shock or vibration when the steering 3. Check the power steering pump fluid pressure with T/N 07406wheel is turned to 0010001 (see PUMP PRESSURE full lock TEST WITH T/N 074060010001 ) or T/N 07406-001000A (see PUMP PRESSURE TEST WITH T/N 07406-001000A ). 4. Overhaul the steering gearbox (see step 2 ). 1. Check cylinder lines for deformation. Steering wheel 2. Check the ball joints for binding. will not return 3. Check wheel alignment (see smoothly WHEEL ALIGNMENT ). 4. Overhaul the steering gearbox (see step 2 ). 1. Check the rack guide adjustment me Friday, April 17, 2009 9:36:39 AM

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

2. 3.

Uneven or rough steering

4.

5.

6. 1. Steering wheel kicks back during wide turns

2.

(see RACK GUIDE ADJUSTMENT ). Check the drive belt (see DRIVE BELT INSPECTION ). Check for low or erratic engine idle speed (see IDLE SPEED INSPECTION ). Check for air in the power steering system due to air entering inlet side of pump. Check for low fluid level in the power steering reservoir due to possible leaks in system (see FLUID REPLACEMENT ). Overhaul the steering gearbox (see step 2 ). Check the drive belt (see DRIVE BELT INSPECTION ). Check the power steering pump fluid pressure with T/N 074060010001 (see PUMP PRESSURE TEST WITH T/N 074060010001 ) or T/N 07406-001000A (see PUMP PRESSURE TEST WITH T/N 07406-001000A ).

1. Check when the noise occurs:  If the noise is heard up to 2-3 minutes after starting the engine in cold weather, this is normal.  If the noise is heard when the wheel is turned with the vehicle stopped, this is normal me Friday, April 17, 2009 9:36:39 AM

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

2. 3. Humming noise from the power steering system

4.

5.

1.

2.

Power steering rack rattle or chattering

3.

4.



due to the fluid pulsation. Check for the high-pressure hose touching the subframe or body. Check for automatic transmission converter noise (A/T). Check for air bubbles in the power Pump pressure steering fluid, leak on inlet side of pump. Check for particle contamination of fluid and restricted filter in the reservoir. Check for loose steering components (tie-rod and ball joints). Tighten or replace as necessary. Check the steering column shaft for wobbling. If the steering column wobbles, replace the steering column assembly (see STEERING COLUMN REMOVAL AND INSTALLATION ). Check the rack guide adjustment (see RACK GUIDE ADJUSTMENT ). Check the power steering pump pulley:  If the pulley is loose, tighten it (see step 46 ).  If the pump shaft is loose, replace the pump (see PUMP REPLACEMENT ). Check the fluid level. If low, fill the reservoir to the proper level and

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)



Hissing from the power steering system/foaming fluid







Noise from the power steering pump 

check for leaks (see FLUID LEAKAGE INSPECTION ). Check the reservoir for leaks. Check for crushed inlet hose or loose hose clamp allowing air into Air in the P/S fluid the suction side of the system (see FLUID LEAKAGE INSPECTION ). Check the power steering pump shaft oil seal for leaks. Compare the pump noise at normal operating temperature to another like vehicle (pump noise for 2-3  P/S pump minutes after starting the engine in pressure cold weather is normal).  Air in the P/S Remove and inspect the pump for fluid wear and damage (see PUMP REPLACEMENT ).

Squeaking from Check the drive belt (see DRIVE BELT the power steering INSPECTION ). pump 

Fluid leaks from the steering gearbox





Fluid leaks from the top of the valve body unit. Overhaul the valve body unit (see step 19 on page 1751). Fluid leaks from the driver's side boot. Replace the valve oil seal on the pinion shaft. Replace the cylinder end seal on the gearbox side. Fluid leaks from the passenger's side boot. Replace the cylinder end seal on the cylinder side.

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)









Fluid leaks from the power steering line 



Fluid leaks from the power steering pump



Fluid leaks from pinion shaft near the lower steering joint bolt. Overhaul the valve body unit (see step 19 on page 17-51). Fluid leaks from the steering damping valve covers on the valve body unit. Replace the valve housing. Fluid leaks from the cylinder line connections (flare nuts). Tighten the connection and retest (see POWER STEERING HOSE, LINE, AND PRESSURE SWITCH REPLACEMENT ). Fluid leaks from a damaged cylinder lines. Replace the cylinder line (see POWER STEERING HOSE, LINE, AND PRESSURE SWITCH REPLACEMENT ). Fluid leaks from the pump outlet hose or return line fitting on the valve body unit (flare nuts). Tighten the fitting and retest. If it still leaks, replace the hose, the line, or valve body unit as necessary. Fluid leaks from the front oil seal. Replace the front oil seal. Fluid leaks from the power steering pump housing. Replace the leaking O-rings or seals (see FLUID LEAKAGE INSPECTION ), and if necessary replace the power steering pump (see PUMP REPLACEMENT ).

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)



Fluid leaks from the power steering reservoir 

Fluid leaks from the power steering pump outlet hose (high-pressure)





Fluid leaks from around the reservoir cap because fluid level is too high. Drain the reservoir to the proper level. If the fluid is aerated check for an air leak on the inlet side of pump. Fluid leaks from reservoir. Check for reservoir for cracks and replace as necessary. Check the fitting for loose bolts. If the bolts are tight, replace the fitting O-ring. Fluid leaks at the swagged joint. Replace the pump outlet hose.

Fluid leaks from Check the hose for damage, the power steering deterioration, or improper assembly. pump inlet hose Replace or repair as necessary. (low-pressure) SYMPTOM TROUBLESHOOTING HARD STEERING

1. Check the power assist (see STEERING WHEEL ROTATIONAL PLAY CHECK ). Is the initial turning load more than 34 N (3.5 kgf, 7.7 lbf)? YES -Go to step 2. NO -Power assist is OK. 2. Connect the P/S joint adapter (pump), P/S joint adapter (hose), and P/S pressure gauge T/N 07406-0010001 (see PUMP PRESSURE TEST WITH T/N 07406-0010001 ), or T/N 07406-001000A (see PUMP PRESSURE TEST WITH T/N 07406-001000A ) to the pump. me Friday, April 17, 2009 9:36:39 AM

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

3. Measure steady-state fluid pressure from the pump at idle. 2

Is the pressure 1,470 kPa (15 kgf/cm , 213 psi) or less? YES -Go to step 4. NO -Go to step 8. 4. Measure the pump relief pressure at idle. 2

Is the pressure 7,850-8,550 kPa (80-87 kgf/cm , 1,140-1,240 psi) or more? YES -Go to step 5. NO -Go to step 9. 5. With a spring scale, measure the power assist in both directions, to the left and to the right. Are the two measurements within 5.0 N (0.51 kgf, 1.12 lbf) of each other? YES -Go to step 6. NO -Go to step 11. 6. Measure the fluid pressure with both pressure gauge valves open (if so equipped), while turning the steering wheel fully to the left and fully to the right. 2

Is the pressure 7,850-8,550 kPa (80-87 kgf/cm , 1,140-1,240 psi) or more? YES -Go to step 7. NO -Faulty steering gearbox. 7. Adjust the rack guide (see RACK GUIDE ADJUSTMENT ), and retest. Is the steering OK? me Friday, April 17, 2009 9:36:39 AM

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

YES -Repair is completed. NO -Faulty steering gearbox. 8. Check the outlet and return hoses and lines between the pump and the steering gearbox for clogging and deformation. Are the lines clogged or deformed? YES -Repair or replace the lines. NO -Faulty valve body unit. 9. Disassemble the pump (see PUMP OVERHAUL ). 10. Check the pressure control valve for smooth movement and leaks (see step 16 ). Is the pressure control valve OK? YES -Faulty pump assembly. NO -Faulty pressure control valve. 11. Check the cylinder lines for deformation (see POWER STEERING HOSE, LINE, AND PRESSURE SWITCH REPLACEMENT ). Are any of the lines deformed? YES -Replace the deformed line. NO -Go to step 12. 12. Check for a bent rack shaft or misadjusted rack guide (too tight). Is the rack shaft bent or the rack guide adjusted too tight? YES -Replace the rack shaft, or readjust the rack guide. NO -Faulty valve body unit. me Friday, April 17, 2009 9:36:39 AM

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

PUMP PRESSURE TEST WITH T/N 07406-0010001

Special Tools Required   

P/S joint adapter (pump) 07RAK-S040111 P/S joint adapter (hose) 07RAK-S040122 P/S pressure gauge 07406-0010001

Check the fluid pressure as follows to determine whether the trouble is in the pump or the steering gearbox. 1. Check the power steering fluid level (see FLUID REPLACEMENT ). 2. Remove the cowl cover and under-cowl panel (see FRONT GRILLE COVER REPLACEMENT ). 3. Remove the pump outlet hose clamp (A) from the intake manifold.

Fig. 2: Identifying Pump Outlet Hose Clamp (With Torque Specifications) 4. Disconnect the pump outlet hose, then install the P/S joint adapter (pump) on the pump (A). Take care so as not to spill the power steering fluid on the frame and other parts.

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

Fig. 3: Identifying P/S Joint Adapter (Pump) On Pump (With Torque Specifications) 5. Install the P/S pressure gauge to the P/S joint adapter (pump). 6. Connect the P/S joint adapter (hose) to the P/S pressure gauge. 7. Connect the pump outlet hose (A) to the P/S joint adapter (hose).

Fig. 4: Identifying Pump Outlet Hose To P/S Joint Adapter (Hose) (With Torque Specifications) 8. Fully open the shut-off valve (A).

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

Fig. 5: Identifying Pressure Control Valve 9. Fully open the pressure control valve (B). 10. Start the engine, and let it idle. 11. Turn the steering wheel from lock-to-lock several times to warm the fluid to operating temperature at 158°F (70°C). 12. Measure steady-state fluid pressure while the engine is idling. If the pump is in 2

good condition, the gauge should be no more than 1,470 kPa (15 kgf/cm , 213 psi). If it reads higher, check for:  Clogged or deformed pump outlet or return line between the pump and the steering gearbox.  Clogged valve body unit. 13. Raise the engine speed to 3,000 rpm, and measure the fluid pressure. If the pump is in good condition, the gauge should read at least 1,470 kPa (15 2

kgf/cm , 213 psi). If it reads higher, repair or replace the pump. 14. Lower the engine speed, and let it idle. Close the shut-off valve, then close the pressure control valve gradually until the pressure gauge needle is stable. Read the pressure. NOTE:

Do not keep the shut-off valve closed more than 5 seconds or the pump could be damaged by overheating.

15. Immediately open the shut-off valve fully. me Friday, April 17, 2009 9:36:39 AM

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

If the pump is in good condition, the gauge should read at least 7,850-8,550 2

kPa (80-87 kgf/cm , 1,140-1,240 psi). A low reading means pump output is too low for full assist. Repair or replace the pump. 16. Reinstall all removed parts. PUMP PRESSURE TEST WITH T/N 07406-001000A

Special Tools Required   

P/S joint adapter (pump) 07RAK-S040111 P/S joint adapter (hose) 07RAK-S040122 P/S pressure gauge 07406-001000A

Check the fluid pressure as follows to determine whether the trouble is in the pump or the steering gearbox. 1. Check the power steering fluid level (see FLUID REPLACEMENT ). 2. Remove the cowl cover and under-cowl panel (see FRONT GRILLE COVER REPLACEMENT ). 3. Remove the pump outlet hose clamp (A) from the intake manifold.

Fig. 6: Identifying Pump Outlet Hose Clamp (With Torque Specifications) 4. Disconnect the pump outlet hose, then install the P/S joint adapter (pump) on the pump (A). Take care so as not to spill the power steering fluid on the frame and other parts. me Friday, April 17, 2009 9:36:39 AM

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

Fig. 7: Identifying P/S Joint Adapter (Pump) On Pump (With Torque Specifications) 5. Install the P/S pressure gauge to the P/S joint adapter (pump). 6. Connect the P/S joint adapter (hose) to the P/S pressure gauge. 7. Connect the pump outlet hose (A) to the P/S joint adapter (hose).

Fig. 8: Identifying P/S Pressure Gauge To P/S Joint Adapter (Pump) (With Torque Specifications) 8. Open the shut-off valve (A) fully.

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

Fig. 9: Identifying Shut-Off Valve - P/S Pressure Gauge 9. Start the engine, and let it idle. 10. Turn the steering wheel from lock-to-lock several times to warm the fluid to operating temperature at 158°F (70°C). 11. Measure steady-state fluid pressure while the engine is idling. If the pump is in 2

good condition, the gauge should be no more than 1,470 kPa (15 kgf/cm , 213 psi). If it reads higher, check for:  Clogged or deformed pump outlet or return line between the pump and the steering gearbox.  Clogged valve body unit. 12. Raise the engine speed to 3,000 rpm, and measure the fluid pressure. If the pump is in good condition, the gauge should read at least 1,470 kPa (15 2

kgf/cm , 213 psi). If it reads higher, repair or replace the pump. 13. Lower the engine speed, and let it idle. Close the shut-off valve gradually until the pressure gauge needle is stable. Read the pressure. NOTE:

Do not keep the shut-off valve closed more than 5 seconds or the pump could be damaged by overheating.

14. Immediately open the shut-off valve fully. If the pump is in good condition, the 2

gauge should read at least 7,850-8,550 kPa (80-87 kgf/cm , 1,140-1,240 psi). me Friday, April 17, 2009 9:36:39 AM

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

A low reading means pump output is too low for full assist. Repair or replace the pump. 15. Reinstall all removed parts. FLUID LEAKAGE INSPECTION

Fig. 10: Identifying Fluid Leakage Components Location FLUID REPLACEMENT

Check the reservoir (A) at regular intervals, and add the recommended fluid as necessary. Always use Honda Power Steering Fluid. Use of any other type of power steering fluid or automatic transmission fluid can cause increased wear and poor steering in cold weather. NOTE:

If the fluid is contaminated, the screen in the reservoir may be partially blocked. Replace the reservoir if necessary.

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

Fig. 11: Identifying Fluid Reservoir 1. Remove the reservoir from its holder. Raise the reservoir, then disconnect the return hose (A) to drain the reservoir. Take care not to spill the fluid on the body and parts. Wipe off any spilled fluid at once. NOTE:

Inspect the reservoir screen for any debris. If the reservoir screen is clogged, replace the reservoir.

Fig. 12: Identifying Reservoir Tank Specified Level - Upper Level Line 2. Connect a hose (B) of suitable diameter to the disconnected return hose, and me Friday, April 17, 2009 9:36:39 AM

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2008 Honda Civic EX 2006-08 STEERING Hydraulic Power Steering Components - Civic (All Except Hybrid)

3.

4. 5. 6. 7. 8.

put the hose end in a suitable container. Start the engine, let it run at idle, and turn the steering wheel from lock-to-lock several times. When fluid stops running out of the hose, shut off the engine. Discard the fluid. Reinstall the return hose on the reservoir. Fill the reservoir to the upper level line (C). Start the engine and run it at fast idle, then turn the steering from lock-to-lock several times to bleed air from the system. Recheck the fluid level and add some if necessary. Do not fill the reservoir beyond the upper level line. If the fluid is contaminated, dark, or discolored, repeat the procedure as necessary.

POWER STEERING HOSE, LINE, AND PRESSURE SWITCH REPLACEMENT

Note these items during installation: 





Connect each hose to the corresponding line securely until it contacts the stop on the line. Install the clamp or adjustable clamp at the specified distance from the hose end as shown. Check all clamps for deterioration or deformation; replace the clamps with new ones if necessary. Add the recommended power steering fluid to the specified level on the reservoir and check for leaks.

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