Isuzu Tilt Slide FYJ2000 Instruction Manual page 423

Check the air spring bellows for cracks and other damage. Check the fasteners,
connecting parts, height sensor lever and rod for looseness and damage.
Damaged parts must be replaced with new ones as soon as possible. Drive the vehicle
to the nearest Isuzu Dealer.
It is very important to maintain the air suspension air pressure. Inadequate air pressure
results in air spring damage.
The vehicle becomes dangerously unstable.
SERVICE AND MAINTENANCE
Air Suspension
Air Leakage Inspection
Check the air pipes, air ducts, and air
springs for air leakage.
Creases in the air springs indicate either
leakage or insufficient air supply to the
spring.
Air Spring Inspection
Check the air springs for damage.
Check the spring fasteners and connecting
parts for looseness and damage.
Check the lower surface of each spring for
embedded sand and pebbles. If necessary,
remove any embedded materials, taking
care not to damage the spring.
Grease from the propeller shaft may
splatter on the air bellows during vehicle
operation. Use a clean rag to wipe the
bellows free of any grease.
Under no conditions, use thinner to clean
the air bellows. Damage to the bellows will
result.
Vehicle Posture Inspection
When heavy cargo is loaded, the front of
the trailer will settle. If the air suspension is
working properly, it will return to its normal
height within a few seconds.
If the trailer does not return to its normal
height, a faulty leveling valve or spring
damage is indicated. Drive the vehicle to
the nearest Isuzu Dealer for repair.
Maintenance Schedule
V
→ Refer to page 7-163
7-95