TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
Page 265 of 1563
TM 9-2815-220-24 GENERATOR (650 AMPERE) DRIVE GEAR TEST 0039 00 TEST METHOD TWO: BENCH TEST (Continued) BENCH TEST NOTE A 300 foot-pound (406 N•m) capacity torque wrench is required for the bench test. 1. Align pointer (A) with degree indicator marks (B) on coupling tool (1). 2. Check drive gear deflection/slippage. a. While watching indicator on the generator coupling tool (1), gradually increase torque to 167 foot-pounds (227 N•m). b. Check deflection by observing degrees indicated on coupling tool at 167 foot-pounds (227 N•m) torque. Reading must be between 8 and 17 degrees. If not, coupling is faulty and must be replaced. c. Check slippage by removing torque and reading indicator. If indicator returns to zero, slippage has not occurred and coupling is good. If indicator does not return to zero, coupling has slipped at too low a torque value and must be replaced. 1 A B WP 0039 00-5