17 Quantum BlastBLAST/REV D/OCTOBER 2002
WHEELS AND SUSPENSION
Your Blast is equipped with three sets of wheel assemblies: two anti-tip wheels, two drive wheels, and two caster wheels.
Each of the wheels has its own suspension system that increases your comfort, traction, stability, and safety.
WARNING! The drive wheel and caster suspension system are optimised at the factory and should not be
adjusted by the user. If you alter either system, you may affect the Blast’s handling characteristics. This may
result in serious injury.
DRIVE WHEELS
Your Quantum Blast uses two 36 cm (14 in.) drive wheels that are directly connected to the motor/gearbox assembly. The
drive wheels have either solid inserts or pneumatic tubes. The drive wheels feature a rear Sport-Trac Suspension (STS)
which provides comfort and increased performance by independently suspending the rear drive wheels.
TYRES AND TUBES
If your Blast is equipped with pneumatic tyres, you should check the air
pressure at least once a week. This prolongs the life of your tyres and
helps ensure smooth operation of your chair. If you have a flat tyre,
replace the tube. Replacement tyres and tubes are readily available
through your authorised Pride provider.
WARNING! Make sure the tyre is completely deflated
before attempting repair.
Follow these easy steps for a quick and safe repair:
1. Completely deflate the tyre if pneumatic.
2. Remove the hubcap.
3. Use a 1.9 cm (3/4 in.) socket spanner to remove the drive wheel
nut from the center hub of the wheel. See figure 11.
4. Pull the wheel off of the axle.
5. Remove the bolts that hold the wheel halves together.
6. Remove the old tube and/or tyre and replace it with a new tube
and/or tyre.
7. Reassemble the wheel.
8. Slide the wheel back onto the shaft.
9. Install the drive wheel bolt into the center hub and tighten.
10. Inflate the tyre to 30-35 psi.
11. Replace the hubcap.
CASTER WHEELS
The caster wheels are located on the front of your Blast and are part of
the All-Conditions Caster Beam (ACC) suspension system. See figure
12. The ACC works by suspending the front casters on a pivoting beam,
allowing the caster wheels to conform to uneven terrain. ACC, com-
bined with STS, allows the front and rear wheels of your Blast to articu-
late independently, dramatically increasing stability and traction when
traversing off-road and uneven terrain.
ANTI-TIP WHEELS
Your Blast is equipped with spring-loaded rear anti-tip wheels, which
travel up and down to prevent them from catching on obstacles. Addi-
tionally, the anti-tip wheels are linked to the drive wheels and actively
react to sudden rearward weight shifts, enhancing stability and safety.
See figure 13.
Fig. 11. Drive Wheel
Fig. 12. Caster Wheel
REMOVE HUB TO EXPOSE DRIVE WHEEL NUT.
WHEELS AND SUSPENSION
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