TM10-3930-660-20 19-4. AIR CLEANER RESTRICTION INDICATOR - REPLACE This task covers: a. Removal b.  Installation Initial    Setup Tools Material/Parts Tool Kit, Automotive Mechanics Lockwashers  (9) Equipment  Condition Vehicle parked on level ground. 1. 2. 3. 4. UNSCREW AIR CLEANER RESTRICTION INDICATOR (1) FROM ELBOW (2). DISCONNECT TUBE (3). a. b. c. d. IF Unscrew tube (3) from elbow air cleaner (5). Unscrew tube (3) from elbow vehicle frame (7). Remove two nuts (8) and two 4) at 6) on lockwashers (9) from two clamps (10).  Discard  lockwashers  (9). Remove tube (3) from clamps (10). NECESSARY, UNSCREW ELBOW (2), AND ELBOW (6) FROM VEHICLE FRAME (7). IF NECESSARY, UNSCREW ELBOW (4) FROM AIR CLEANER (5). INSTALLATION 1. IF REMOVED, SCREW ELBOW CLEANER  (5). 2. IF REMOVED, SCREW ELBOW (4) INTO AIR (2) AND ELBOW (6)  INTO  VEHICLE  FRAME  (7). 3.  CONNECT  TUBE  (3). a. Screw tube (3) into elbow (4) at air cleaner (5). b. Screw tube (3) into elbow (6) on vehicle frame (7). c. Position tube (3) in clamps (10) and secure to frame (7) with two new lockwashers (9) and two nuts (8) . 4. SCREW AIR CLEANER RESTRICTION INDICATOR (1) INTO ELBOW (2). 19-3/19-4 Blank)