TM 5-6115-585-34 NAVFAC  P-8-623-34 TO-35C2-3-455-2 TM-05684C/05685B-34 d. Clean and Inspect. Clean blower wheel, stator and rotor with clean dry cloth. Inspect stator and rotor for signs of friction wear. Check stator wires for breaks, looseness and good insulation. e.  Test. (1) Rotor. The rotor is a permanent magnet as- sembly  and  should  not  deteriorate. (2) Stator. Using an ohmmeter, check the stator for open circuitry. High pot test the stator to ground for short circuits at 1070 volts. f. Install. (1)  Stator.  Attach  stator  (15)  to  engine  using screws (12) and lockwashers (13). Replace wire clamp to oil filter casting. Reconnect stator leads (14) at terminal block. (2) Rotor. Install rotor (11) into blower wheel (4) using screws (9) and lockwashers (10). Install blower wheel  per  paragraph  7-7.  Install  blower  housing  per Operator  and  Organizational  Maintenance  Manual. Section III. ENGINE INTERNAL ASSEMBLIES 7-8.1. ENGINE COMPRESSION TEST. The  engine  cylinder  compression  tests  of  this paragraph may be used to determine the condition of engine valves, pistons, piston rings, and cylinders. Normal cylinder pressure should be between 350 to 450 psi,  depending  upon  engine  condition.  Corrective maintenance  should  be  considered  if  cylinder  pressure is below 325 psi or if there is a pressure difference of 15 percent or more between cylidners. These pressure ratings apply to a warm engine at cranking speed (ap- proximately 300 rpm). a. Compression Test. (1)  Run  the  engine  until  normal  operating temperature  is  reached. (2) Stop engine and remove all injector nozzle assemblies in accordance with paragraph 7-20a. (3) Disconnect end tag wires to governor fuel shut off solenoid (K5). (4)  Obtain  or  fabricate  two  compressing  adapter mounting  studs  (see  table  2-2). (5)  Install  two  compression  adapter  mounting studs (3, figure 7-8.1) into cylinder head (13) in place of screws (1, figure 7-45). (6) Assemble gasket (7, figure 7-8.1), adapter (8), gasket (9), heat shield (10) and gasket (11) on compres- sion adapter (6) (see table 2-l). (7) Install compression adapter and assembled parts into cylinder head opening (12) of cylinder head (13). (8) Install retainer flange (5) over compression adapter  studs  (3),  secure  compression  adapter  (6)  to cylinder  head  (13)  with  two  MS51967-2  nuts  (2)  (from bench stock) and washers (4). (9) Connect compression tester gage (1) (see table 2-1)  to  compression  adapter  (6). (10)  Crank  the  engine.  Read  and  record  cylinder pressure as indicated by the compression tester gage. (11) Remove nuts (2) from studs (3). Disassemble and  remove  items  4  through  11  from  cylinder  head  (13). Diesel engines have very close clearances. Too much oil squirted into the cylinder may cause a hydrostatic lock and damage the piston when the engine is cranked with com- pression adapter and tester gage installed. (12) Squirt a small amount of oil (approximately 30 drops) into the cylinder through the cylinder injector opening (12). (13)  Assemble  and  reinstall  items  removed  in  step (11) above. (14)  Crank  the  engine.  Read  and  record  cylinder pressure.  If  the  cylinder  pressure  has  increased  con- siderably  from  the  pressure  recorded  in  step  (10) above, the rings and cylinder bore should be checked for correct tolerances and wear limits. (15) If the cylinder pressure has increased only slightly, the mating surfaces of the valves should be checked for abnormal conditions. (16) Repeat steps 5 through 15 for each cylinder. (17)  Install  injector  assemblies  in  accordance  with paragraph  7-20i. (18)  Reconnect  wires  to  governor  fuel  shut  off solenoid  (K5). Change 3   7   -    9