TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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TM 9-2815-220-24 GENERATOR (650 AMPERE) DRIVE GEAR TEST 0039 00 TEST METHOD ONE: DRIVE GEAR INSTALLED ON ENGINE 1. Position generator coupling tool (1) on generator end plate (2) and secure with coupling clamp (3) that was removed with generator. a. Improvise a pointer and align it with degree markings on generator coupling tool. 2. Prevent crankshaft from rotating. a. Install engine turning tool (4) (item 136, WP 0176) on flywheel (5) and block so that crankshaft cannot rotate. NOTE A 300 foot-pound (406 N•m) capacity torque wrench is required for the test. 3. Check drive gear deflection/slippage. a. While watching indicator on the generator coupling tool (1), remove backlash, then 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. END OF TEST METHOD ONE 1 Pointer and degree marks 2, 3 4 5 WP 0039 00-2