Electrical  Shop Manned by Construction Mechanics, the elec- trical shop repairs, rebuilds, cleans, adjusts, and tests  all  automotive  electrical  parts  and accessories,   such   as   generators,   starters,   and voltage   regulators.   In   many   battalions,   Con- struction  Electricians  (CEs)  are  assigned  to conduct load tests and make electrical repairs to light  plants,  generators,  and  welders. Battery Shop CMs  assigned  to  the  battery  shop  maintain and recharge wet cell batteries, mix electrolyte, and keep a supply of fully charged, spare batteries for  equipment  used  by  the  battalion. The  battery  shop  should  be  well  separated from any open flames. It must be well ventilated to  prevent  accumulation  of  explosive  hydrogen gas   fumes   given   off   during   battery   charging. Adequate  safety  equipment,  located  within  the battery shop, includes rubber aprons and gloves, face shields, eyewash, and treadle shower. Elec- trical  light  fixtures  and  plug-in  connections  should be  of  explosiveproof  design. Mechanics’ Toolroom The mechanics’ toolroom is the central point for  issue  of  all  mechanics’  tools  under  an approved  custody  control  system.  Each  shop supervisor is the custodian of kits and tools needed continuously for the shop. These are checked out by   mechanics   of   the   shop   on   signed   custody receipts.  Tools  needed  to  perform  particular  job assignments are signed out on an individual basis. The toolroom petty officer will have an updated copy  of  the  CESO  Sets  Kits  and  Outfits  Book (SKO)  to  provide  accurate  inventory  lists  of  all tool kits by NAVFAC assembly number. A partial listing  of  tool  kits  available  to  the  mechanic stationed  in  an  NMCB  follows. NAVFAC Assembly Number 80012 80013 80015 80016 80017 80023 80031 80072 80081 80414 Kit Name Tire  service  tools Mechanics’ hand tools, for two people Battery service tools Automotive  tune-up Automotive  body  tools Radiator  tools Metric  hand  tools Puller set mechanical, 13  ton Diesel engine test kit ALFA  Company  tool- room kit 2-5 Be  sure  to  check  your  toolroom  SKO  for additional   tool   kits   and   their   applications. Toolroom  personnel  perform  tool  repair  within their   capabilities   and   ensure   that   preventive maintenance service and electrical safety checks (according   to   COMCBPAC/COMCBLANTINST 5100.1  series,  art.  215)  are  conducted  by  battalion toolroom   personnel. ALFA Company Steel Shop In  construction  battalions,  Steelworkers  (SWs) and Hull Technicians (HTs) form the nucleus of the  ALFA  Company  steel  shop.  Their  work includes   repair   and   rebuilding   of   chassis components and body parts; repair and testing of radiators;   and   repair   of   any   other   metal components  by  welding,  soldering,  brazing,  and so  on. Tire Shop Personnel  assigned  to  the  tire  shop  repair  and replace pneumatic tires on CESE assigned to the battalion. This   shop   should   be   located   in   an   easily accessible area, as over 90 percent of the CESE assigned   to   a   construction   battalion   uses pneumatic tires. The SKO, volume 2, kit 80012, lists  items  required  to  operate  a  battalion-size  tire shop.  An  air  compressor,  separate  from  the maintenance shop, is required because of the large volume  of  air  used. Lubrication Rack The  mechanics  assigned  to  the  lubrication racks maintain adequate stocks of all lubricants required by the battalion and lubricate automotive and  construction  equipment  as  required  under  the preventive  maintenance  (PM)  program. Although  you  will  have  skid-mounted  lubri- cators  and  lubricating  teams  for  servicing equipment  in  the  field,  most  of  your  scheduled PMs  will  be  accomplished  in  the  maintenance shop area. Outdoor locations for lubrication stalls are satisfactory in temperate climates and during favorable weather, but efficiency is increased by providing  suitable  shelter.  PM  racks  should include provisions for storage of greases and oils, preferably  at  a  distance  from  your  other  shop areas,  as  a  precaution  against  fire. In  addition  to  facilitating  lubrication  services, these  racks  should  provide  for  easier  inspection and cleaning of underneath parts and surfaces of CESE.