TM 10-3930-659-20 7-15. TRANSMISSION OIL COOLER HOSES REPLACEMENT. This task covers: a. Removal b. Installation INITIAL SETUP: Equipment Conditions: Materials/Parts: •    Parking brake set (see TM 10-3930-659-10). • Rags (Item 27, Appendix C) •    Conveyorized fork attachments removed from     • Ten preformed packings side of forklift truck (see paragraph 17-13). •    Right and left engine upper sideshields opened   Tools/Test Equipment (see TM 1 0-3930-659-10). •    Right and left transmission side guards • General mechanic's tool kit (Item 44, Appendix F) removed (see paragraph 14-7). • Adjustable wrench (Item 49, Appendix F) •    Transmission bottom guard removed (see para- graph 14-8). References: •    Left engine lower sideshield removed (see para- graph 14-16). • TM 10-3930-659-10 NOTE A  suitable  container  should  be  used  to  catch  any  draining  hydraulic  fluid. Ensure that all spills are properly cleaned. a. REMOVAL 1. Remove hose (23) from tee (12).  Drain hydraulic fluid from transmission oil cooler (1). 2. Remove clamp (24) and hose (23) from transmission oil cooler (1). 3. Remove hose (21) and preformed packing (22) from transmission thermal bypass valve (8).  Discard preformed packing. 4. Remove hose (21) and preformed packing (16) from transmission (17).  Discard preformed packing. 5. Remove bolt (19), clamp (20), and hose (21) from transmission (17). 6. Remove hose (15) from tee (12) and transmission (17). 7. Remove preformed packing (18) from transmission (17).  Discard preformed packing. 8. Remove  hose  (3)  and  preformed  packing  (4)  from  transmission  oil  sampling  valve  (5).    Discard  preformed packing. 9. Remove clamp (2) and hose (3) from transmission oil cooler (1). 10. Remove transmission oil sampling valve (5) from adapter (7). 11. Remove  adapter  (7)  and  two  preformed  packings  (6)  from  transmission  thermal  bypass  valve  (8).    Discard preformed packings. 12. Remove tee (12) from transmission thermal bypass valve (8). 7-46