Hallicrafters-r-274-operation-service-manual-army-tm-11-897 PT.5 – Service manual (PDF)

Erik from ManualsPlus — Sun, 21 Dec 2025 08:10:00 +0000

The service manual for the Hallicrafters PT.5 covers detailed procedures for setting up and operating the device, including adjustments of the tuning dial clutch and dial scale with the tuning gang. It also provides troubleshooting steps such as removing and replacing components like the R-F turret and second mixer subchassis, ensuring proper alignment and mechanical adjustments for optimal performance.

Brand: Hallicrafters
Model: PT.5
Type: service manual
File size: 7.0 MB

Manual Overview

The Hallicrafters PT.5 service manual provides detailed procedures for troubleshooting, diagnostics, and adjustments. For troubleshooting, it describes the removal and reassembly of key components like the selectivity switch and R-F turret. The selectivity switch is accessed by removing dust covers and disconnecting leads, while the turret requires two technicians to handle its removal and reassembly carefully to avoid damaging stationary contacts. Calibration involves adjusting the tuning dial clutch and setting the dial scale with the tuning gang. The tuning dial clutch is adjusted by tightening or loosening a self-locking nut, ensuring not to apply excessive friction. The dial scale is set by aligning the tuning gang to the correct frequency, using a .062-inch gauge for precise spacing. For board-level guidance, the manual details the removal of the second mixer and oscillator subchassis, requiring disconnection of specific cables and unsoldering leads. The manual emphasizes caution to prevent damage during these procedures.