Technical Service Bulletin SIL 852 — 2018 ALTEC DIGGER DERRICK
EQUIPMENT
Bulletin Details
| TSB ID | SIL 852 |
| Manufacturer | |
| Vehicle | 2018 ALTEC DIGGER DERRICK |
| Component | EQUIPMENT |
| Communication Date |
Bulletin Summary
Altec has learned that the electrohydraulic outrigger/tools control valve on AA755L and A-series aerial devices and DLB, DMB, and D2/3/4000B series digger derricks could have the potential to produce a very small amount of flow into the lower tools circuit when the outriggers and tools mode is engaged. This can cause slow unintended movement of a tool such as a pole puller cylinder that is connected to the tool circuit. A blanking plug must be installed to prevent this issue. Inspect the outrigger/tools control valve using the Inspection Procedure. The inspection and repair are covered under the Altec Warranty Policy and can be performed by Altec, the customer, or the customer's warranty provider. Altec will perform the work for free at an Altec facility.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.