TM 10-3930-671-24 Air Cleaning Typical View Showing Secondary Air Cleaning Procedure (Blowing From Engine Side). Wear  suitable  eye  protection  and  protective  clothing  or injury could result. NOTE Use  care  when  air  cleaning  radiator.  Air  pressure  may bend radiator fins. Always  maintain  a  lift  truck  in  clean  condition.  Do  not allow dirt, dust, lint, or other contaminants to accumulate on  the  truck.  Keep  the  truck  free  from  leaking  oil  and grease.   Wipe   up   all   oil   spills.   Keep   the   controls   and floorboards clean, dry, and safe.  A  clean  truck  makes  it easier  to  see  leakage  and  loose,  missing,  or  damaged parts. A clean truck will run cooler. The   environment   in   which    a    lift    truck    operates    will determine   how   often   and   to   what   extent   cleaning   is necessary. The radiator, especially, may require daily air cleaning  to  ensure  correct  cooling.  If  air  pressure  does not remove heavy deposits of grease, oil, etc., it may be necessary to use steam or liquid spray cleaner. 1. Lift   trucks   should   be   aircleaned   at   every   PM interval, and otherwise as often as required. 2. Air  cleaning  should  be  done  using  an  air  hose with    special    adapter    or    extension    having    a control valve and nozzle to direct the air properly. 3. Use   clean,   dry,   low-pressure   compressed   air; restrict    air    pressure    to    100    psi    (690    kPa), maximum. Refer to  Paragraph  5-4  for  additional  information  on  the use of air nozzles and air cleaning procedures. 4.     Air clean the: a) Radiator,    from    both    sides:        first    from counterweight  side  (to   loosen   and   clean away  dirt  opposite  of  fan  air   flow),   then blow away loosened dirt and clean radiator from engine side. b) Engine and accessories. c) Driveline, transaxle, and related components. d) Steer axle and steer cylinder. e) Upright assembly. f) Tilt cylinders. g) Hydraulic control valve. F-55