TM 9-2520-246-34-1 h. Air Cylinder Assembly (Model T-136-27). FRAME 1 1. 2. 3. 4. 5. NOTE Air cylinder parts cannot be repaired. If any parts are damaged, throw them away and get new ones in their place. Check that air cylinder cover (1) has no cracks and warpage. Check that bore of air cylinder (2) has no pitting or rust and that it is not out-of-round. Check that piston (3) has no pitting or rust and that it is not out-of-round. Check that piston seal (4) has no cracked, dry or split rubber. Check that nut (5) and two washers (6) are not damaged. END OF TASK 2-174