(3) Remove   mounting   nuts   (8)   and   remove receiver  box  (23)  from  mounting  brackets (9). (4) Remove nipple (17) from receiver box (23); un-screw    and    remove    elbow    (16)    from nipple (17), and valve (15) from elbow (16). (5) Remove nut  (19),  hose  connector  (20),  flat washer (21) and rubber grommet (22) from receiver box (23). b. Cleaning.    Refer  to  paragraph  6-3  for  general clean-ing instructions. c. Inspection.    Refer  to  paragraph  6-3  for  general in-spection instructions. (1) Check rubber parts for cracks, deterioration or tears. (2) Check condensate receiver box for dents or cracks. d. Repair or Replacement.  Refer to paragraph 6-3 for general repair or replacement instructions. (1) Replace gaskets or o-rings removed during dis-assembly. (2) Straighten dents and repair cracks, replace if damage is too severe. e. Assembly.  To   assemble the   condensate receiver group, proceed as follows: (1) Insert  rubber  grommet  (22)  in  receiver  box (23),    place    flat    washer    (21)    over    hose connec-tor   (20)   and   insert   into   box   (23). Attach to box using nut (19). (2) Attach  valve  (15)  to  elbow  (16),  and  elbow (16)  to  nipple  (17).    Attach  nipple  (17)  to bottom of receiver box (23). (3) Mount  receiver  box  (23)   and   secure   with nuts (8) to mounts (9). (4) Place  gasket  (13)  and  separator  cap  (12) on    receiver    box    (23),    secure    with    lock washers  (11)  and  screws  (10).    Assemble elbow (14) to separator cap (12). (5) Attach tube assembly (5) to elbow (14), and insert hose (1) onto hose connector (20). 6-33.    Diesel  Engine  Assembly  (See  Figure  8-30).    The following    paragraphs    contain    disassembly,    cleaning, inspection, repair or replacement, and assembly instructions for the diesel engine assembly. a. Disassembly.      Disassemble   the   diesel   engine assembly  only  to  the  extent  necessary  to  repair or replace a defective part or parts. WARNING Do not bend engine lifting straps past the vertical plane, or failure of the straps could occur. NOTE Disconnect engine electrical wiring as needed during disassembly process.  Tag for reassembly purposes. NOTE Disassembly and assembly of the diesel engine will require the use of metric tools. (1) Drain  oil  (14,  Figure  8-30,  Sheet  1  of  10) and   unscrew   and   remove   oil   filter   (19). Disconnect   oil   drain   hose   assembly   (14) from frame prior to engine removal. (2) Disconnect  fuel  bleed  off  line  at  fuel  tank filler. (3) If not previously disconnected, remove clips (I la, 1 lb) and attaching hardware(Figure 8- 30,  Sheet  1  of  10),  loosen  screw  in  wire stop  (13)  and  pull  throttle  cable  (11)  loose from    the    engine.        Reattach    clips    and hardware. (4) Disconnect oil pressure hose at oil pressure switch (20). (5) Remove    engine    mounting    nuts    and    flat washers  (17,  Figure  8-30,  Sheet  1  of  10). Use    suitable    hoist    or    lifting    device    and remove     engine     from     frame.          Replace washers and nuts on shock mounts. (6) Unscrew  and  remove  screws  (3,  Figure  8- 30,  Sheet  2  of  10)  and  lock  washers  (4) from   air   intake   manifold   (11).      Remove support  strap  (2)  and  remove  air  breather (5) with rain cap 6-40