TM 9-2350-256-34-1 on  the  control  valve  body,  and  bleed  the  fuel  line  and valve body as described in paragraph 3-33c(6). (9) Overheat switch (fig. 3-10.2). (a)  Install  the  overheat  switch  (24)  on  the heater and secure with the two screws (18). (b) Connect the wires to the terminals on the top  of  the  switch  and  secure  with  the  two  screws (19). (10) Electrical  inlet  assembly  installation  (fig. 3-10.2). (a) Connect the lead from connector D on the receptacle  to  the  terminal  on  the  flame  detector switch (21) by installing a screw (20). (b) If the igniter has been removed, install it as described in b(6) above. (c) Install terminal (31) and washers (30 and 32)  on  the  grounding  stud  on  the  heater  housing. Connect  the  electrical  inlet  assembly  ground  lead from  connector  terminal  A  to  the  grounding  stud and secure with nut (29). Install the igniter ground on terminal (31). (d) Install the electrical inlet assembly on the heater  housing  and  secure  by  tightening  the  two fasteners. (11) Burner assembly installation (fig. 3-10.2). (a) Position burner assembly (10) so that the burner  assembly  flange  engages  the  flange  in  the heat exchanger (15); secure with six screws (39). (b) Position the secondary blower housing (3) on the heat exchanger assembly (15) so that it fits snugly  against  the  burner  assembly.  The  neck  on the housing must aline with the hole in the heater housing. (c)  Connect  the  fuel  tube  (5)  to  the  fuel bushing on the burner assembly (10), and to the fuel control valve outlet elbow. (d) Install the igniter tube and bracket (8) in the  heater,  and  check  that  it  seats  properly  in  the igniter  pocket  on  the  burner  assembly  (10).  Secure the  tube  to  the  secondary  blower  housing  (3)  with the  screw  (4). (e) Install the igniter (b(6) above. (12) Blower assembly installation (fig. 3-10.2). (a)  Feed  the  three  leads  from  the  blower assembly (1) through the hole in the heater housing (28). Slide the grommet (33) onto the leads and work the  grommet  into  the  hold  in  the  heater  housing, (b)  Position  the  blower  assembly  on  the heater housing so that the leads are toward the top of the housing, as shown in figure 3-10.11. Aline the slotted mounting holes with the tapped holes in the heater  housing  and  secure  the  blower  assembly  by installing  and  tightening  the  four  screws  (2,  fig. 3-10.2). (c) Make all necessary electrical connections. (d) Install the guard assembly (16, fig. 3-10.2) and secure by tightening the two fasteners. c.  Deflector  Installation.  Install  the  deflector  on the  personnel  heater  as  shown  in  figure  3-9. d.  Air  Control  Assembly  Installation.  Install  the air  control  assembly  on  the  personnel  heater  as shown in figure 3-9. e.  Personnel  Heater  Assembly  Installation.  Refer to   TM   9-2350-256-20   for   instructions   on   in- stallation  of  the  personnel  heater  assembly  in  the vehicle. 3-36.1.  Testing a.  Subassembly  Tests.  Before  conducting  tests  of the  assembled  heaters,  the  following  tests  and calibrations   should   have   been   performed   during disassembly for repairs. If they were not performed at that time, do them before the beater assembly is tested. (1)   Flame   detector   switch   calibration.   See paragraph 3-36b(5). (2)   Blower   speed   test,   See   paragraph 3-36b(3)(1). (3)   Voltage   limiter   test.   See   paragraph 3-35 b(1)(d). (4) Fuel control valve flow test and calibration. See paragraph  3-36 b(1)(h). b.  Test  Equipment. (1) DC power supply manually adjustable from 18 to 30 volts, with a continuous 15-amp capacity. (2) Two on-off switches. (3)   A   normally   open   (NO)   24-volt   relay, 20-amp  capacity. (4) 0 to 20 amp dc ammeter. (5) 0 to 30 volt dc voltmeter (V1). (6) 0 to 20 volt dc voltmeter (V2). (7)  24-volt  pilot  lamp. (8) Connector to mate with receptacle on heater. (9) Filtered supply of No. 2 diesel fuel (Federal Spec. VV-F-800 Grade II), supplied at 5 ± 1/2 psig. (10)  A  pyrometer  duct  constructed  to  the dimensions shown in figure 3-10.14 and fitted with a   thermometer   or   pyrometer   which   reads   up   to 600°F. Change 2 3-18.29