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.
SIL 3033
Altec has learned that on certain AT37-G aerial devices built from November 2007 to April 2018, the rear torsion bar swing arm can interfere with the long runner channels under the body as the torsion bar rotates during road travel. The interference can cause wear issues and can cause welds on the body mounting angles or cross members to develop cracks.
SIL 811-818
Altec has learned that certain AT35/37-G and AT40-G aerial devices built between February 2008 and January 2016 have power wiring for the 12V hydraulic oil reservoir heater which could be insufficient to carry the electrical current required to operate the heater. This could result in damage to the unitâÂÂs Power Distribution Module (PDM), causing the oil heater to stop operating. A kit has been developed to update the oil heater power wiring to carry the necessary current. Altec requires this kit to be installed on the affected units no later than the next preventive maintenance interval or 90 days from the receipt of this SIL, whichever comes first.
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.