From the Nystrom Performance Library
1956 Packard Push-Button Shift Motor Armature Testing | 56T-26
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- Make
- Packard
- Model / application
- 56th-series Ultramatic electric shift controls
- Document type
- Factory service technical bulletin
- Pages
- 1
Inside this document
Packard Service Technical Bulletin 56T-26. Explains why the push-button shift motor armature can appear shorted under a conventional growler-and-steel-strip test even when serviceable. It describes the supplementary AC-voltmeter method and interpretation of open or shorted windings. The bulletin helps avoid condemning a usable motor based on an unsuitable armature test.
Subjects covered:
• shift-motor armature testing
• growler test interpretation
• commutator-segment voltage checks
Subjects covered:
• shift-motor armature testing
• growler test interpretation
• commutator-segment voltage checks
About this scan
The reading copy is hosted by packardinfo.com. The PDF contains 1 scanned pages. Match the model, equipment and publication headings before applying a procedure.
Source and reproduction status
Packard factory service literature — PackardInfo archive
This entry provides access to the source archive’s reading copy. Source attribution is retained; no printed reproduction is offered.
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