Quantcast COMPRESSOR  DRIVE  BELT  ALIGNMENT  AND.  TENSION CHECK

Order this information in Print

Order this information on CD-ROM

Download in PDF Format

     

Click here to make tpub.com your Home Page

Page Title: COMPRESSOR DRIVE BELT ALIGNMENT AND. TENSION CHECK
Back | Up | Next

Click here for a printable version

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Combat
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
USMC
   
Products
  Educational CD-ROM's
Printed Manuals
Downloadable Books
   

 

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Back
OFF SEASON CARE
Up
TM-5-4210-230-14P-1 Aerial Ladder Fire Fighting Truck Manual
Next
AIR  CONDITIONING  PERFORMANCE  CHECK  (PRESSURE TEST)
TRUCK SERVICE MANUAL TM 5-4210-230-14&P-1 BODIES AND CABS 8. Install covers on heater/evaporator unit and instrument panel. COMPRESSOR  DRIVE  BELT  ALIGNMENT  AND.    TENSION CHECK Air conditioning (freon) compressor drive belt alignment   and   tension   should   be   checked   prior   to   the   air conditioning season and at least three or four times during the year. 1. Inspect drive belt(s) and replace if worn or damaged. 2. Check   belt   and   pulley   alignment   and   make   any necessary corrections. 3. Using belt tension gauge, check belt tension mid-way between  the  compressor  pulley  and  driving  pulley. For specified belt tension, see SPECIFICATIONS. Belt   tension   adjustment   procedures   vary   between engine  models.    Some  installations  require  movement  of  the compressor  on  its  mounting  to  adjust  belt  tensions.    Some have adjustment screws to manipulate the compressor for belt adjustment.  Others require movement of the alternator. SERVICE OPERATIONS IMPORTANT Certain  precautions  must  be  observed  when servicing  the  air  conditioning  system.    (See SAFETY   PRECAUTIONS   and   also   "Service Hints"  under  COMPONENT  REMOVAL  AND INSTALLATION.) PHYSICAL CHECKS Heater and Defroster 1. With  heater  control  (HTR)  lever  and  blower  switch "OFF", operate engine until normal operating temperature is obtained. 2. With engine warmed up, heater inlet hose should feel hot  to  the  touch  and  heater  outlet  hose  should  feel cool  (or  only  slightly  warm).    If  both  hoses  are  hot, check   for   a   faulty   or   mis-adjusted   heater   control cable or a faulty water flow control valve. 3. Set heater controls for maximum heat (HTR lever on "HOT", blower switch on "HIGH") and operate engine and  heater  for  a  few  minutes  to  permit  system  to normalize.  Both inlet and outlet heater hoses should flow from heater outlets.  If neither hose feels hot or if only   the   inlet   hose   is   hot,   refer   to   "No   Heat"   in TROUBLE SHOOTING GUIDE. 4. Manipulate AIR CONTROL lever between "DEF" and "CAB"  positions  and  check  for  warm  air  flow  from defroster and heater outlets.  If air flow is not correct in  relation  to  lever  position,  check  for  faulty  or  mis- adjusted control cables or faulty air door seals. Air Conditioning System 1. With    air    conditioning    controls    set    for    maximum cooling,   (A/C   lever   on   "COLD",   blower   switch   on "HIGH"), operate engine and air conditioning system for about five (5) minutes or until initial heat has been removed from cab and an average flow of cold air is achieved. If  system  does  not  cool,  refer  to  "No  Cooling"  in  TROUBLE SHOOTING GUIDE. 2. With    system    operating,    feel    all    air    conditioning system  components  and  refrigerant  lines  for  proper operating temperatures. From  the  discharge  side  of  compressor  along  high pressure   line,   through   condenser,   filter-dehydrator tank and up to expansion valve, everything should be hot   or   warm   to   the   touch.      The   expansion   valve, evaporator  and  all  of  the  lines  on  the  low  pressure side  leading  back  to  the  compressor  should  be  cool to    the    touch.        Any    deviation    from    the    above conditions indicates a malfunction in the system. A   stoppage   or   severe   restriction   in   the   refrigerant system can be located in this manner.  Malfunctions or  stoppages  may  be  indicated  by  extreme  cold  or frosted    areas    (e.g.,    a    cold    filter-dehydrator    tank frosted  part  way  up  indicates  a  stoppage  or  serious restriction in the tank). CAUTION Avoid contact with moving belts, pulleys  and fan   when   making   this   check.      Beware   of extremely   high   temperatures   at   compressor outlet (discharge) hoses and tubing. CTS-2731   Page 20 PRINTED IN UNITED STATES OF AMERICA

Privacy Statement - Press Release - Copyright Information. - Contact Us - Support Integrated Publishing

Integrated Publishing, Inc.