FT5328

Recheck the ride height on the airbag and once the height specification is achieved, tighten the clamp.

NOTE

Do not over-tighten to avoid damaging the p-mount.

NOTE

To get more adjustment, it’s possible to invert the position (flip) of the P-mount and tighten the clamps over
the knurled area.
(P-MOUNT inverted)

KNURLED AREA
P-MOUNT

(P-MOUNT not inverted)

KNURLED AREA

P-MOUNT

Figure 7 - Knurled Area of P-mount

1.18.

Repeat the steps 1.8 to 1.16 for the right rear side.

PAGE 8 OF 21
NQF772001 VERSION 3

FT5328

FAST TRACK

FRONT LEVELING
1.19.

Locate the front left air bag (See Figure 8).

Front of Bus

Figure 8 - Location of Front Airbag

1.20.

Using the jig NT1090, measure the distance from the air spring mounting plate and the bottom of the air
bag structure to which the air bag is attached.

1.21.

Once the jig is in place, tighten the knob and remove the jig from the location (See Figure 9).

PAGE 9 OF 21
NQF772001 VERSION 3

FAST TRACK

FT5328

Figure 9 - Measurement of Air Springs - Front

NOTE

Make sure the jig is not touching any plate hardware and confirm that the jig is flush. See picture of potential
hardware interference.

Hardware to clear

Figure 10 - Location of Hardware

PAGE 10 OF 21
NQF772001 VERSION 3

FT5328

FAST TRACK
1.22.

After removing the jig, measure the distance from the top of A to the bottom of B at the center of the jig using
a measuring tape. Confirm that the plate x plate distance is within the specification shown on table 2.

Figure 11 - Measuring the Distance from Top A to Bottom B
NOTE

If the measurement is not within specification, document the measurement.

Front Ride Height Plate x Plate on lift specification

11 7/8" ± 1/8"

Minimum

11 ¾”

Maximum

12”

Table 2 - Plate Distance

PAGE 11 OF 21
NQF772001 VERSION 3

FT5328

FAST TRACK
1.23.

Repeat steps 14-16 for the front right side.

1.24.

If the front left and the front right plate x plate measurements are not within specification, move on to the next
step to adjust both of the front plate x plate heights.

1.25.

Locate the center front leveling valve and remove the dust cover using a 10mm socket wrench (See Figure 12).

Figure 12 - Location of Center Front Leveling valve

1.26.

Confirm that the arm and bracket on the front leveling valve is 90deg and straight. If the arm and bracket are
not 90deg and straight (See Figure 13).

•

Loosen the M6 bolt using a 10mm socket wrench

•

Adjust the arm and bracket to be 90deg and straight

•

Tighten the bolt to 8.1 ± 0.75 lb ft (11 ± 1Nm) using a torque wrench and 10mm socket. Apply torque seal.

Torque 8.1± 0.75 lb-ft (11 ± 1Nm)

This Arm and
bracket must be
verified as straight
and at 90 degrees

M16 Bolt

Figure 13 - Angle between the Arm and Bracket

PAGE 12 OF 21
NQF772001 VERSION 3

FT5328

FAST TRACK
1.27.

Using a 11mm socket wrench, loosen up the 2x bolts on the center leveling valve. While facing the streetside
of the bus, adjust the front right and left plate x plate height (See Figure 14).

•

Push the valve towards the front of the bus along the slot to increase/inflate the air springs.

•

Push the valve towards the rear of the bus along the slot to decrease/deflate the air springs.

2 x hardware to
loosen up

Front of Bus

Figure 14 - Loosening the bolts on the Center Leveling Valve

1.28.

Re-measure the front left and front right air spring plate x plate measurement using the jig to confirm if the
height is within specification.

NOTE

Let the pneumatic system settle roughly 5 minutes before taking measurements between the air spring
mounting plates.
1.29.

If the FRONT plate x plate heights were adjusted and cannot meet specification with the leveling valve adjusted
to max, adjust the REAR plate x plate measurement by returning to step 1.14 to1.18.

NOTE

The rear left and rear right measurements may become out of specification when the front left and
front right measurements become in specification. This is acceptable if the front measurements are within
specification.

PAGE 13 OF 21
NQF772001 VERSION 3

FT5328

FAST TRACK
1.30.

Re-measure the front left and front right air bag heights using the jig. Once the front right and front left plate
x plate measurements are within specification, tighten the 2x bolts on the front leveling valve and torque to
3.7-4.4 lb ft (5-6 N●m) using a torque wrench and 11mm socket. Apply torque seal (See Figure 15).

Torque
ft lb lb-ft
(5-6 Nm)
Torque3.7-4.4
3.7-4.4
(5-6

N●m)

Figure 15 - Tightening the bolts

1.31.

Reinstall the dust cover over the front center leveling valve.

1.32.

Lower the vehicle.

APPENDIX – REFERENCE MEASUREMENTS
Refer to table 3 for reference vehicle front wheelchair ramp x ground height using a measuring tape.

NOTE

This height is only for reference purposes as the measurement is subjective based on the ground measuring
from the table.

Front ride height wheelchair ramp x ground
specification

15 1/4” ± 1/4”

Minimum

15”

Maximum

15 ½”

Table 3 - Ground Measuring

PAGE 14 OF 21
NQF772001 VERSION 3

FAST TRACK

FT5328

APPENDIX - KNEELING SYSTEM
NOTE

Make sure that the surface selected for the verification of the kneeling system is as level as possible.

NOTE

The installation of batteries or the connection of electrical terminals to an external power source is required
for the following steps.

NOTE

The following tests are performed with an empty load (excluding the driver).

NOTE

Before performing these tests, make sure that all objects in the way are removed (e.g. safety supports).

NOTE

120 psi minimum in the reservoirs at all times and make sure that the doors have air.

1.33.

Place the master control switch in the RUN position and front start the engine.

1.34.

Place the kneeling and ramp master switch in the ON position (See Figure 16).
NOTE

Make sure that the ramp is retracted and that the doors are closed.
1.35.

Activate the kneeling switch to begin kneeling (See Figure 16).

NOTE

Make sure that the underbody does not rest on the axle. No contact is allowed.

PAGE 15 OF 21
NQF772001 VERSION 3

FT5328

FAST TRACK

Figure 16 - Kneeling Switch

1.36.

The alarm must sound during kneeling and the exterior yellow indicator lights must blink.

1.37.

Check that the yellow dashboard tell-tale lights up and remains lit until the command to raise is given.

1.38.

Allow the bus to settle.

1.39.

Measure the kneeling height with a measuring tape in accordance to table 5 from the top of the wheelchair
ramp floor to ground.

NOTE

This height is only for reference purposes as the measurement is subjective based on the ground measuring
from the table.
Front kneeling height wheelchair ramp x ground specification

11 1/8” -0” / +1/2”

Minimum

11 1/8”

Maximum

11 5/8”

Table 4 - Ground Measuring

1.40.

Activate the kneeling switch to start rising.

NOTE

The cycle ends when the brake interlock releases.
1.41.

Turn off the master run switch.
PAGE 16 OF 21

NQF772001 VERSION 3

FT5328

FAST TRACK

LEVELING VALVE KIT
BOM FOR LEVELING VALVE KIT
•

N30292 Linkage Kit 2 per bus if needed

•

Kits includes items below

•

Link x1

•

Grommet x1

•

1/4" Stud x2

•

Hose clamp x1

•

P-mount x1

•

Lock Washer 1/4 x4

•

Hex Bolt 1/4 -20NC x4

Linkage Kit being used with the leveling valve
The Kit includes:
Link (P/N 22025-3)

1x

Grommet (P/N 26424)

1x

1/4" Stud

2x

Hose clamp (P/N 25921-6)

1x

P-Mount (P/N 26425-1)

1x

Lock Washer 1/4"

4x

Hex Bolt 1/4-20NC

4x

PAGE 17 OF 21
NQF772001 VERSION 3

FT5328

FAST TRACK
NOTE

For more information on the raising and lowering of the vehicle, refer to section 18: HOISTING AND TOWING
of the Nova LFS maintenance manual. Respect your current internal safety procedures. Use the proper
hoisting equipment for your safety.
1.42.

Raise the vehicle to locate rear leveling valves, one on each side (See Figure 17).

Figure 17 - Location of Rear Leveling Valve

1.43.

Loosen top and bottom nut (See Figure 18).
Top

Bottom
Figure 18 - Loosening the Nuts

PAGE 18 OF 21
NQF772001 VERSION 3

FAST TRACK
1.44.

FT5328

Leveling valve with top and bottom nut loosened (See Figure 19).
Top

Bottom
Figure 19 - Leveling the Valve

1.45.

Leveling valve removed from the bus (See Figure 20).

Figure 20 - Removal of Leveling Valve

PAGE 19 OF 21
NQF772001 VERSION 3

FT5328

FAST TRACK
1.46.

Pre-assemble new valve, adjustment will be done after installation (See Figure 21).

Figure 21 - Installation of New Valve

1.47.

Install the support rod and hardware for top and bottom (See Figure 22).
Top

Nut

Nut

Flat washer

Lock washer
Bottom

Figure 22 - Installation of Support Rod and Hardware

PAGE 20 OF 21
NQF772001 VERSION 3

FAST TRACK
1.48.

FT5328

Secure top and bottom hardware and torque the nuts to 8.1 ± 0.75 lb ft (11 ± 1N●m) (See Figure 23).

Torque 8.1 ± 0.75 lb ft (11 ± 1N●m)

Hardware

Figure 23 - Tightening the hardware

1.49.

Slide the adjustment rods (See Figure 24).

1.50.

Adjust leveling valve as per ride height instructions.
Top

Bottom
Figure 24 - Adjusting the Leveling valve

1.51.

Lower the vehicle.

1.52.

Set the battery disconnect switch in the battery compartment to ON position.

1.53.

Set the Master control switch in the ON position.

1.54.

The vehicle can return in service.

PAGE 21 OF 21
NQF772001 VERSION 3