Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
TSB-050
An additional cross member or front sill is welded behind the header panel in PRATT chassis, this front sill is designed to support the front of the VP container. The front sill is supposed to be flush with the top of the frame rails. In some cases this front sill has been found to be too low which can result in damage and wear of the VP container.
TSB-049
In severe operating conditions, some sleeves on the bottom of the cylinders positioned over the tractor tires may experience accelerated wear. The sleeve that the lower flex plate is secured to can become worn to the point that it fails and no longer restrains the bottom of the cylinder.
TSB-048
Variation in the PRD bracket mounting hole location in the cross member may result in the PRD assembly installation height being too high resulting in contact between the roof panel and PRD inlet pipe. A revised bracket allows adjustment of the installed height of the PRD assembly.
TSB-040
A new fastening method has been developed to improve the connection between the chassis and the container. In the event of a roll over collision this new fastening method should be more durable than the original chassis pin.
TSB-036
Some Quantum VP trailers have been found to have the PRD trigger tube support block coming loose from the cylinder.
TSB-038
Some Quantum VP trailers mounted on Pratt chassis have been found to have a chafe concern between the chassis wiring and the chassis insert that was added as directed by TSB-031. The air brake supply lines may also be exposed to possible chafe damage and should also be inspected.
TSB-037
The manual shut off valves used on the Quantum VP trailers may over time become loose. During trailer use, the manual shut off valves may not remain in the position selected by the operator. A new handle has been developed with a detent feature to lock the valve in the open position.
2742-001
Circle Seal Controls - Safety Recall Withdrawal
TSB-012
Frame Mount Cylinder Isolator Replacement
TSB-010
OMB Automatic Valve Plunger Failure
TSB-008
Frame Moiunt End Caps
SI-002
Cylinder Inspection Intervals
TSB-011
ITT Regulator PRD Discharge
SI-003
Insulation Kit Instructions
CAM-001
Circle Seal PRD Campaign 14E-013 - Select Circle Seal Pressure Relief Devices sold by Quantum, Product Safety Recall
TSB-009
High Voltage Safety Disconnect
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.