Before installation, place a small amount of grease in  the  pilot  bearing  and  on  the  release  bearing  inner surface. Now, the transmission is ready to be installed. Basic transmission installation is as follows: NOTE DO NOT place any lubricant on the end of the clutch shaft input splines or pressure plate release  levers.  Grease  in  these  locations  can spray   onto   the   clutch   disc,   causing   clutch slippage and failure. 1.   Place  the  transmission  on  the  transmissionjack. 2.  Position  the  transmission  behind  the  engine. Ensure that the release bearing is in place on the clutch  fork. 3.  Carefully  align  the  transmission  and  engine, ensuring that the input and output shaft lines up perfectly  with  the  center  line  of  the  engine crankshaft. If the transmission is slightly tilted, it will not fit into place. 4.   With the transmission in high gear, slowly push the  transmission  into  the  clutch  housing.  You may  need  to  raise  or  lower  the  transmission slightly to keep it aligned. 5.  When  the  transmission  is  almost  in  place, wiggle  the  extension  housing  in  a  circular motion while pushing toward the engine. This will help start the input shaft in the pilot bearing. The transmission will then slide into position. 6.   With the transmission bolted to the clutch cover, install  the  rear  support  or  cross  member  and transmission   mount.   Reinstall   the   clutch linkage,  the  transmission  linkage,  and  any  other parts. 7. Adjust the clutch. With   the   transmission   installed   and   the   clutch adjusted, test-drive the vehicle for proper operation. If the transmission is noisy, extremely loose, or binds, it must   be   removed   and   disassembled   for   further inspection and corrective action. TRANSMISSION  SERVICE The manual transmission should have the oil level checked at each PM. Recurrent low oil level indicates that there is leakage around the oil seals. If  you  notice  foaming  in  the  oil,  drain  the transmission  and  refill  it  with  clean  oil.  Foaming  is evidence  that  water  or  some  other  lubricant  that  will not  mix  with  the  recommended  transmission  oil  is present. When  it  becomes  necessary  to  change  the  trans- mission oil, the following procedure should be used: 1. 2. 3. 4. Before you drain the oil, clean around the drain and  fill  plugs  thoroughly.  Both  drain  and  fill plugs  should  be  removed  to  allow  the  oil  to drain. Drain  the  transmission  immediately  after  the vehicle has been operated. The oil will then be warm  and  will  readily  drain,  taking  along  the suspended contaminants as it drains. Check  the  drained  oil  for  any  uncommon foreign  matter,  such  as  large  metal  particles (steel or brass). This is a good sign of internal damage to the gears, bearings, or synchronizers. If  large  particles  are  found,  notify  your  shop supervisor for further instructions. Once the transmission has drained completely and  no  large  metal  particles  are  found,  you replace the drain plug and refill the transmission with the proper grade of oil until it reaches the bottom of the fill plug. You then replace the till plug. Other  than  the  periodic  check  required  on  the transmission  fluid,  drain  and  refill  are  performed  as prescribed by the manufacturer. You should check the bolts for tightness and inspect the case for damage each scheduled PM. Q1. Q2. Q3. Q4. Q5. Q6. REVIEW  2  QUESTIONS What material is most commonly used in casting a transmission case? What  four  shafts  are  located  in  a  manual transmission? What are the two functions of the synchronizer? What are the two types of shift linkages used on manual transmissions? What  type  of  equipment  uses  a  sliding  gear transmission? If first gear ratio is 7.55 to 1, what is the gear ratio  when  the  transmission  is  shifted  into reverse? 4-25