TM 10-3930-653-14&P Body   to   gear   tooth   point Clearance mm (In) 0.17 to 0.30 (0.0066 to 0.0118) Limit mm(in) 0.40(0.0157) Fig. 4-105.  Checking Clearance between Body and Gear. (4)    Inspect  gear  backlash.    If  backlash  is  In  excess  of limit, replace the gear. Gear backlash mm (in) 0.3 to 0.4 (0.01  to 0.016 Limit mm (in) 0.25 (0.0098) Fig. 4-106.  Checking Gear Backlash. (5)    Inspect  clearance  between  gear  and  straight  edge placed  across  body.    Should  clearance  be  In  excess  of limit, resurface underside of body. Cover to gear mm (in) 0.04 to 0.11 (0.0157 to 0.0433) Limit mm (in) 0.30 (0.0118) Fig. 4-107.  Checking Side Clearance. (6)    Check  cover  for  wear  or  step  wear,  especially  gear contact points.  Plane it off, if necessary. (4)  ADJUSTING REGULATOR (1)  Insert valve in body and measure distance (A) from valve end to cotter pin. (2)      Distance   from   spring   contacting   face,   inside   the valve, to valve end is valve B.  (Amounts to be specified.) 18mm (0.71) Fig. 4-108.  Regulator Valve. 4-54