Special Tools
DescriptionPart NumberQty.
DIGITAL TOURING SUSPENSION AIR PUMP
54000033
1

Recommended Pressure
The recommended pressures are starting pressures for the total weight of rider, passenger and luggage. Vary the recommended pressure to suit road conditions, riding style and comfort. Using pressures outside the recommended loading range results in a reduction of available suspension travel and reduced rider comfort and can damage the shock absorbers.
Table 1. Recommended Suspension Air Pressure: Models Without Tour-Pak*
SHOCK LOAD
TOTAL WEIGHT
PRESSURE**
psi
kPa
Solo rider
Up to 68 kg (150 lb)
0
0
68–91 kg (150–200 lb)
0-10
0-69
91–113 kg (200–250 lb)
10-20
69-138
113–136 kg (250–300 lb)
20-30
138-206
136 kg (300 lb) to maximum added weight allowed***
30-50
206-345
Solo rider with capacity luggage of 18 kg (40 lb)
Up to 68 kg (150 lb)
10-20
69-138
68–91 kg (150–200 lb)
20-30
138-206
91–113 kg (200–250 lb)
30-40
206-276
113–136 kg (250–300 lb)
40-50
276-345
136 kg (300 lb) to maximum added weight allowed***
50
345
Rider plus passenger
Any weight up to maximum added weight allowed***
40-50
276-345
Maximum loaded vehicle
Maximum added weight allowed***
50
345
* If an optional Tour-Pak is installed, add 34–69 kPa (5–10 psi) to shock pressure.
** Do not exceed 345 kPa (50 psi).
*** Refer to Specifications → Specifications → Weights: FLHTCU, FLHTCUL, FLHTCU TC, FLHTCUL TC, FLHTK, FLHTKL, FLTRU for maximum added weight allowed.
Table 2. Recommended Suspension Air Pressure: Models With Tour-Pak
SHOCK LOAD
TOTAL WEIGHT
PRESSURE*
psi
kPa
Solo rider
Up to 68 kg (150 lb)
5-10
34-69
68–91 kg (150–200 lb)
10-20
69-138
91–113 kg (200–250 lb)
20-30
138-206
113–136 kg (250–300 lb)
30-40
206-276
136 kg (300 lb) to maximum added weight allowed**
40-50
276-345
Solo rider with capacity luggage of 32 kg (70 lb)
Up to 68 kg (150 lb)
25-30
172-206
68–91 kg (150–200 lb)
30-40
206-276
91–113 kg (200–250 lb)
40-50
276-345
113 kg (250 lb) to maximum added weight allowed**
50
345
Rider plus passenger
Any weight up to maximum added weight allowed**
50
345
Maximum loaded vehicle
Maximum added weight allowed**
50
345
* Do not exceed 345 kPa (50 psi).
** Refer to Specifications → Specifications → Weights: FLHR, FLHRC, FLHX, FLHXS, FLTRX, FLTRXS for maximum added weight allowed.
Adjustment
NOTE
See Figure 1. Use a no-loss air pump such as the DIGITAL TOURING SUSPENSION AIR PUMP (Part Number:54000033) available from a Harley-Davidson dealer. This pump can also be used as a tire air pressure gauge.
1. Press the power button (3) to turn on the display.
2. To switch the display between psi and kPa units, hold the power button five seconds.
3. Open the left saddlebag to access the shock air valve.
4. Remove the cap from the air valve.
5. See Figure 2. Install the pump air valve adapter on the air valve.
NOTE
  • Before releasing pressure, add 20.7–34.6 kPa (3–5 psi) to the existing pressure to prevent oil from exiting the air valve. Never exceed 345 kPa (50 psi).
  • For best results, press the pressure release button slowly and only partially.
WARNING
Use caution when bleeding air from the suspension. Moisture combined with lubricant may leak onto the rear wheel, tire and/or brake components and adversely affect traction, which could result in death or serious injury. (00084a)
NOTICE
Do not exceed maximum air pressure for suspension. Air components fill rapidly. Therefore, use low air line pressure. Failure to do so can result in possible damage to components. (00165b)
6. Adjust pressure.
a. Release pressure: Press the pressure release button on the pump.
b. Inflate pressure: See Figure 2. Pull out the handle. Rotate the handle to the T-position. Pump until the display indicates the recommended pressure. Refer to Table 1 or Table 2.
7. Install the cap on the air valve. Close saddlebag.
1Pressure release button
2Air valve adapter
3Power button
Figure 1. Digital Touring Suspension Air Pump
Figure 2. Adjusting Shock Air Pressure