TM 9-2520-246-34-1 2-11. FINAL ASSEMBLY. The following paragraphs give instructions to assemble the transmission subassemblies into a final assembly. NOTE Keep all parts clean and protected from dust and dirt. Coat all oil seals, gears, and shafts with engine lubricating oil during assembly. Use new snaprings and gaskets during assembly. a. Reverse Idler Gear Assembly. FRAME 1 1. Put grease on back of two thrust washers (1). 2. Put two thrust washers (1) in transmission case (2) as shown. Grease will hold two thrust washers in place. 3. Put reverse idler gear assembly (3) between two thrust washers (1) and hold it in place. NOTE Make sure milled side of reverse idler gear shaft (4) faces outside transmission case (2). 4. Using soft face hammer, tap in reverse idler gear shaft (4). END OF TASK 2-87