TM10-3930-660-34 7-8.  TRANSMISSION CONTROL VALVE - REPLACE/REPAIR (Cont’d) j. Install new O-ring (25) on cap (24).  Install cap (24). k.   Install new O-ring (21) on plug (19 and 20). Install plug (19). l. Install stem assembly (23) (range selector spool). m. Install plug (20). n.   Install new oil seal (22) in plug (20). o.   Install two new O-rings (13) into top bore grooves. p.   Install brake cutoff piston (18). q.   Install new O-ring (17) on brake line plug (16). Install brake line plug (16). r. If removal was necessary, install plug (15) in elbow (14). s.   Install elbow (14). t. Install pressure valve assembly (12), spring guide (11) and return spring (10). u.   Install new O-ring (9) on plug (8). Install plug (8). 2. INSTALL NEUTRAL SAFETY SWITCH (7). APPLY LOCTITE #59241 TO THREADS OF NEUTRAL SAFETY SWITCH (7). INSTALLATION 1. INSTALL TRANSMISSION VALVE (3). a.   Install two springs (5) and two detent balls (4) in back of transmission control valve (3). b.   Install new gasket (6). 7-53 CAUTION Use care when installing transmission control valve (3) so as to not lose balls (4) and spring (5). c.   Install transmission control valve (3) over gasket (6). 2. INSTALL THIRTEEN WASHERS (2) AND THIRTEEN SOCKET HEAD CAPSCREWS (1). 3. INSTALL TRANSMISSION, PARA. 7-4.