TM10-3930-660-20 18-26. HYDRAULIC HOSES, LINES AND FITTINGS   - REPLACE/REPAIR (Cont‘d) INSTALLATION CAUTION If removed, tighten elbow (251) and adapter (252) to 55 ft. lb. during installation. Do not overtighten. Failure to follow this instruction could result in damage to transmission hose ports. Remove caps and plugs as hoses are installed. Wipe all sealing surfaces on hoses and components to which they connect clean and dry. Apply a film of clean hydraulic oil to all O-ring seals on fittings as fittings are installed. 1. 2. 3. 4. 5. INSTALL FITTINGS AND HOSE ASSEMBLIES (1  THROUGH  242),  AS  APPLICABLE. IF INSTALLING A FITTING EQUIPPED WITH AN O-RING, FIRST APPLY CLEAN HYDRAULIC OIL TO O-RING. IF PREVIOUSLY DRAINED, REFILL HYDRAULIC RESERVOIR TO PROPER LEVEL, PARA.  5-10. START ENGINE AND OPERATE ALL HYDRAULIC SYSTEMS IN WHICH HOSE ASSEMBLIES AND/OR FITTINGS HAVE BEEN REPLACED. CHECK CAREFULLY FOR LEAKS. CORRECT ANY LEAKS BY TIGHTENING CONNECTION OR PART REPLACEMENT BEFORE RESUMING VEHICLE OPERATION. 18-112