Question about 2008 Harley Davidson FLHX Street Glide

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Proper air pressure for rear shocks

My rear suspension sucks right now. i have a fox air pump and pumped it up to 150 psi, but it still seems as stiff as a hard tail. what gives?

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Um you sure you pumped it up to 150lbs? If you did, you may have already blown the seals in the shocks. I don't believe they were designed for more than 30lbs. I weigh 300 myself and set my air shocks at 15lbs.

Posted on Jun 04, 2010

  • tyna941 Jun 07, 2011

    Stock shocks are designed for 180-200 lb passenger/load. They're not a true air suspension either to oil comes out when you release air (because the air and oil are mixed in the shock). They wear out in about 10,000 miles. You could have blown you seal, lost a significant amount of oil, or... when you add air and it mixes with oil in the damping body it basically locks up the shock making it super stiff... it's just how they work. I use Legend Air Suspensions... only true air suspension on the market. They have a lifetime warranty and made my bike ride way better.

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1 Answer

How much air should my shocks have on my 09 Road King


Hi Rick, I am sorry you can't find the first and best tool you ever bought for your Harley but despair not for a mere $7 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day Rear Suspension Recommended Air Pressure: FLHR/C, FLTR, FLHX
SHOCK LOAD TOTAL WEIGHT PRESSURE LB. KG PSI kPa Solo rider up to 150 up to 68 0 0 150-200 68-91 0-10 0-69 200-250 91-113 10-20 69-138 250-300 113-136 20-30 138-206 over 300 over 136 30-50 206-345 Solo rider with capacity luggage of 40 lbs 18 kg up to 150 up to 68 10-20 69-138 150-200 68-91 20-30 138-206 200-250 91-113 30-40 206-276 250-300 113-136 40-50 276-345 over 300 over 136 50 345 Rider plus passenger ALL ALL 40-50 276-345 Maximum GVWR ALL ALL 50 345 If P&A Tour-Pak is installed, add 5-10 psi 34-69 kPa to shock pressure.
Do not exceed 50 psi 345 kPa rear shock pressure. Harley Davidson Manuals Mark Workshop

Aug 25, 2015 | Road Motorcycles

1 Answer

1999 flhr road king shock air pressure


Recommended Suspension Air Pressure: FLHX, FLTRX, FLHR/C


SHOCK LOAD TOTAL WEIGHT PRESSURE
LB. KGPSI kPa


Solo rider up to 150 up to 680 0
150-200 68-91 0-10 0-69
200-250 91-113 10-20 69-138
250-300 113-136 20-30 138-206
over 300over 136 30-50 206-345

Solo rider with capacity
luggage of 40 lbs (18 kg) up to 150 up to 68 10-20 69-138
150-200 68-91 20-30 138-206
200-250 91-113 30-40 206-276
250-300 113-136 40-50 276-345
over 300 over 136 50 345

Rider plus passenger ALL ALL 40-50 276-345

Maximum GVWR ALL ALL 50 345

If Tour-Pak is installed, add 5-10 psi (34-69 kPa) to shock pressure.
Do not exceed 50 psi (345 kPa) suspension pressure.

May 13, 2014 | Harley Davidson FLHR Road king Motorcycles

1 Answer

What is max air pressure for rear shocks on 2009 harley road king flhr?


Recommended Suspension Air Pressure: FLHX, FLTRX, FLHR/C


SHOCK LOAD TOTAL WEIGHT PRESSURE
LB. KGPSI kPa


Solo rider up to 150 up to 680 0
150-200 68-91 0-10 0-69
200-250 91-113 10-20 69-138
250-300 113-136 20-30 138-206
over 300over 136 30-50 206-345

Solo rider with capacity
luggage of 40 lbs (18 kg) up to 150 up to 68 10-20 69-138
150-200 68-91 20-30 138-206
200-250 91-113 30-40 206-276
250-300 113-136 40-50 276-345
over 300 over 136 50 345

Rider plus passenger ALL ALL 40-50 276-345

Maximum GVWR ALL ALL 50 PSI 345 kPa

If Tour-Pak is installed, add 5-10 psi (34-69 kPa) to shock pressure.
Do not exceed 50 psi (345 kPa) suspension pressure.

May 07, 2014 | 2008 Harley Davidson FLHX Street Glide

1 Answer

How much air pressure to put in shocks with 2 riders


2006 Touring shocks =

Table 2-6. Rear Air Suspension Pressures

Shock Loading Recommended Pressures

PSI kPa

All Models Except FLHRS, FLHX - Standard Shocks


Solo rider up to 150 lbs. (68 kg), hereafter referred to as "Average" 0 0

Solo rider 150-200 lbs. (68-91 kg) 0-10 0-69

Solo rider 200-250 lbs. (91-113 kg) 5-15 35-103

Average rider with passenger up to 150 lbs. (68 kg) 10-15 69-103

Average rider with passenger up to 200 lbs. (91 kg) 20-25 138-172

Maximum GVWR (see Section 2.1 Specifications) 20-35 138-241


FLHRS, FLHX Only - Low Profile Shocks

Solo rider up to 160 lbs. (73 kg), hereafter referred to as "Average" 0-5 0-35

Solo rider 160-200 lbs. (73-91 kg) 0-10 0-69

Solo rider over 200 lbs. (91 kg) 5-10 35-69

Average rider with passenger up to 150 lbs. (68 kg) 20-30 138-207

Average rider with passenger over 150 lbs. (68 kg) 25-35 172-241

Maximum GVWR (see Section 2.1 Specifications) 40-50 276-345

111WWAARRNNININGG

Use this table as a starting point in determining suitable rear air suspension pressures. Do not exceed

maximum GVWR when loading vehicle and do not pressurize system in excess of 50 psi (345 kPa) for

FLHRS, FLHX models and 35 psi (241 kPa) for all others. Excessive load weight and/or air suspension

pressure can adversely affect handling and lead to loss of vehicle control, which could result in loss of life

Aug 30, 2011 | 2006 Harley Davidson FLHR Road king

1 Answer

How much air (p.s.i.) should there be in the front and back shocks


Hi.

Depends on what you want to get. In theory the fork can be between 0 and 43 psi. In practice if you put 40 psi it will be completely stiff and seals may start leaking.

In practice the front take 0 to 12 psi, and rear shock from 7 to 21 psi.

If you need street performance put more pressure. Settings for comfort in long travels will require lower pressure.

Here tables from service manual:

FRONT

ginko_107.jpg

REAR:

Rear shock absorber air pressure can vary from 0.5 kg/cm2 (7 psi) to 1.5 kg/cm2 (21 psi) as the road conditions become more severe or the load increases.

For the front here below the procedure from service manual. I suggest staying far from the 43 psi limit suggested if you do not want to break the seals.

8. Make sure the front wheel is off the ground and inflate the forks to 0-0.4 kg/cm2 (0-6 psi). Do not use compressed air; use only a small hand-operated air pump.
CAUTION
Never exceed an air pressure of 43 psi (3.0 kg/cm2) as damage may occur to internal components of the fork assembly.

Jun 12, 2011 | 1986 Honda VF 500 F

1 Answer

The rear of the car sets higher than the front, suspension is stiff in the back to. Is there a suspension control system that is not working


There's a level sensor in the back of most cars that have air ride suspension such as Cadillac Devilles.

If there is plenty of pressure, it's probably not a leaky air shock aborber nor is it a bad air pump under the hood.

Nov 11, 2010 | 1994 Cadillac DeVille

1 Answer

Where is the a.i.r. pump located



The air pump for the secondary air system (emission control device) is located under the battery. If you do replace it, replace the check valve too, it is on top of the exhaust manifold and connected to the pump with a hose. The check valve fails and ruins the pump. Source(s): http://repairpal.com/volvo-850-1997/comm…
http://repairpal.com/air-pump-check-valv…
http://repairpal.com/air-pump

OR


I think they are talking about the pump to provide vacuum to the climate control when the turbo is putting boost in the intake manifold. The vacuum can come from an electric pump or from an engine driven pump, something like an old engine driven fuel pump. I needed an electric pump for my 765T, and all the wrecking yards wanted to sell me the engine driven form. (A new one was $500, and it wasn't that important to me.)

An engine that takes the engine driven pump will have a hole in it while the others will not have a hole. Source(s): 35 years maintaining my own cars, including 17 years with a 1985 765T


OR



Rear Suspension Leveling Air Compressor
RH front of vehicle, attached beneath the fascia

Rear Suspension Leveling Air Compressor Relay K19
Lower I/P, to the RH side of the steering column, on the relay box


Automatic Level Control System Operation Check
Support the rear wheels or support the rear lower control arms when certain tests require raising the vehicle on a hoist. Use two additional jack stands in order to support the rear lower control arms in the normal curb weight position when a frame type hoist is used. Refer to Trim Height Specifications in Suspension General Diagnosis.

Refer to ALC Suspension System Check for electrical troubleshooting of the Automatic Level Control (ALC) system, or if DTC's are present.

Diagnosing Leveling Complaints Without DTCs Present Procedure
Perform the following preliminary inspections before performing the system performance test:

Inspect the ignition (pin A & pin H) at the ALC sensor connector.
Ensure that the ignition (pin A & pin H) at the ALC sensor connector connection is secure.
Inspect the ground (pin E) at the ALC sensor connector.
Ensure that the ground (pin E) at the ALC sensor connector connection is secure.
Inspect the ALC sensor link.
Ensure that the ALC sensor link is properly secured to the actuator arm.
Inspect the ALC sensor actuator arm for damage.
ALC Diagnosis Table Step
Action
Value(s)
Yes
No

1
Has the ALC compressor assembly and the air tube been replaced?
--
Go to Step 7
Go to Step 2

2
Raise and support the vehicle. Lifting and Jacking the Vehicle in General Information.
Inspect the air tubes running from the ALC compressor to both rear shock absorbers.
Inspect the air tube connection at the ALC air dryer.
Are the air tubes damaged and/or disconnected?
--
Go to Step 13
Go to Step 3

3
Squeeze the left rear shock absorber in the middle of the air sleeve.

Did the air sleeve slightly compress?
--
Go to Step 5
Go to Step 4

4
Operate the ALC system for 60 seconds.
Test the air tube-to-air dryer connection for leaks using a soap bubble solution.
Is a leak evident?
--
Go to Step 20
Go to Step 5

5
Disconnect the air tube from the ALC dryer.
Connect the Pressure Gauge to the ALC dryer.
Close the toggle valve on the Pressure Gauge .
Operate the ALC compressor.
Did the pressure build to the specified value?
80 psi
Go to Step 6
Go to Step 10

6
Shut off the compressor when the pressure reaches 80 psi.
Monitor the gauge for 1 minute.
Did the pressure leak down?
--
Go to Step 10
Go to Step 7

7
Connect the Pressure Gauge to the right rear shock absorber. Ensure that the toggle valve on the Pressure Gauge is away from the shock absorber.
Close the toggle valve.
Pressurize the shock absorber at the toggle valve on the Pressure Gauge to 80 psi.
Monitor the gauge for 1 minute.
Did the system leak down?
--
Go to Step 11
Go to Step 8

8
Use the toggle valve on the Pressure Gauge in order to slowly release the air pressure.
Disconnect the Pressure Gauge from the right rear shock absorber.
Connect the Pressure Gauge to the left rear shock absorber.
Pressurize the Pressure Gauge to 80 psi.
Monitor the gauge for 1 minute.
Did the pressure leak down?
--
Go to Step 12
Go to Step 9

9
Use the toggle valve on the Pressure Gauge in order to slowly release the air pressure.
Disconnect the Pressure Gauge from the left rear shock absorber.
Connect the Pressure Gauge , inline, at the tee near the rear of the vehicle.
Reconnect the air tube to the ALC dryer.
Open the toggle valve on thePressure Gauge .
Using shop air, pressurize the system to 80 psi at the service connection of the Pressure Gauge .
Monitor the pressure gauge for 1 minute.
Did the pressure leak down?
--
Go to Step 14
Go to Step 20

10
Replace the following components:

• Replace the ALC compressor. Refer to Air Compressor Replacement .

• Replace the air tube. Refer to Air Tube Replacement .

Are the replacements complete?
--
Go to Step 20
--

11
Slowly open the toggle valve on the Pressure Gauge in order to relieve the air pressure.
Replace the right rear shock absorber. Refer to Shock Absorber Replacement in Rear Suspension.
Reconnect all of the air tube connections.
Is the shock absorber replaced, and are all of the air tube connections reconnected?
--
Go to Step 20
--

12
Slowly open the toggle valve on the Pressure Gauge in order to relieve the air pressure.
Replace the left rear shock absorber. Refer to Shock Absorber Replacement in Rear Suspension.
Reconnect all of the air tube connections.
Is the shock absorber replaced, and are all of the air tube connections reconnected?
--
Go to Step 20
--

13
Are any of the air tubes damaged?
--
Go to Step 14
Go to Step 18

14
Replace the air tube that runs from the air dryer to the two rear shock absorbers.

Is the replacement complete?
--
Go to Step 15
--

15
Remove the ALC air dryer from the compressor assembly.
Shake the ALC air dryer with the head connection down.
Did water/moisture come out of the ALC air dryer when the dryer was shaken?
--
Go to Step 16
Go to Step 17

16
Replace the ALC air dryer. Refer to Automatic Level Control Air Dryer Replacement .

Is the replacement complete?
--
Go to Step 17
--

17
Replace the air compressor head. Refer to Automatic Level Control Air Compressor Head Replacement .

Is the replacement complete?
--
Go to Step 18
--

18
Install the ALC compressor on the vehicle.
Reconnect all of the air tube connections.
Is the ALC compressor reinstalled, and are all of the air tube connections reconnected?
--
Go to Step 20
--

19
Repair the air tube-to-air dryer connection leak.

Is the repair complete?
--
Go to Step 20
--

20
Reconnect all of the connectors that were disconnected.
Reconnect all of the components that were removed.
Clear all of the codes with the ignition ON and with the engine OFF.
Wait at least 5 minutes.
Is the rear of the vehicle trim level?
--
System OK
--






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2 Answers

How much air should be in the front shocks?


too much pressure an yul blow rings in shocks call dealer for proper pressure

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