Service bulletin 54-20
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10076458 |
| Published by NHTSA | 2016-07-14 |
| Manufacturer's number | 54-20 |
| Manufacturer's date | 2015-10-01 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
Guidelines for Repairing or Replacing an Electrical Harness Use the guidelines in this bulletin to determine if a damaged electrical harness should be repaired or replaced. Refer to the wiring section in Group 54 of the applicable workshop manual for detailed wire repair instructions. Table 1 describes general guidelines for repairing or replacing a harness. There may be cases when more than one factor determines the course of action. For example, repairing a harness is recommended if shipping times for the replacement harness exceed one week. However, replacement may be the only option if damage to the harness is too extensive. NOTE: When a harness is repaired, the source of the damage must also be identified and repaired. Table 2 is a quick-reference for specific wire and terminal conditions. IMPORTANT: Damaged connectors and seals can be replaced without replacing the harness. A drag test should be performed to make sure that the terminal can retain proper tension to the mating terminal. Refer to "Terminal Drag Test" in this bulletin for instructions. Discolored wires or melted insulation should be replaced before any other repairs are performed on the harness.
The document
No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.
Components
Electrical system
| THOMAS BUILT BUSES THOMAS BUILT BUSES |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.