TM10-3930-660-20 18-4. TANDEN GEAR PUMP   - TEST/REPLACE (Cont‘d) 2.  REMOVE  PUMP  (9). a. Remove two capscrews (10) and two lockwashers (11) and remove pump (9) from transmission mounting (12) . Discard lockwashers (11). b. Remove and discard mounting O-ring  (13). 3. IF NECESSARY, REMOVE ELBOWS (5) (6), (7), AND (8), AND REDUCER (14), FROM PUMP (9) . INSTALLATION NOTE Remove caps and plugs as hoses are installed. Wipe all sealing surfaces on valve and hoses clean and dry. Apply film of clean hydraulic oil to all seals as they are installed. 1. INSTALL PUMP (9). a. If necessary, install reducer (14), and elbows (5), (6), (7) and (8), to pump (9). b. Install new mounting O-ring (13). NOTE Apply Loctite 242 to threads of cap- screws  (10). c. Position pump (9) on transmission mounting (12) and secure with two new lockwashers (11) and two capscrews  (10). 2. CONNECT FOUR HYDRAULIC HOSES (1), (2), (3), AND (4) TO ELBOWS (5), (6), (7), AND (8) AS TAGGED. 18-8