Land Rover Defender Workshop 1993 Rover Manual

AIR CONDITIONING  

AIR CONDITIONING  

AIR CONDITIONING 
CHARGING AND TESTING  EQUIPMENT 
Connecting  the gauge  set 
NOTE:  1: 
There  are  two methods of connecting 
the  charging  and testing  equipment,  depending 
on  the  operation  to be  carried  out. The  method 
described  for evacuating 
or charging  with liquid 
refrigerant  also  applies to pressure  test  and 
compressor  oil level check  operations. 
NOTE: 2: Various  types of charge  and  test 
equipment  are available  depending  upon the 
manufacturer  chosen by the  user....

AIR CONDITIONING 
15. Turn  the stem  on the  discharge  valve 1. Place the vehicle  in a ventilated  area away 
clockwise  until the pressure  rises on the  from open  flames  and heat  sources. 
discharge  pressure gauge, 
If the system  is to 
be  evacuated,  the discharge  service valve 
3. Open and secure  the bonnet. 
seat  must  be in the  mid  (test)  position. 
4. Remove  the caps  from the compressor 
connected  and ready  for proceeding  with the 
5. Check  that both  compressor  service...

AIR CONDITIONING 
NOTE: If it is necessary  to disconnect  the 1. Depressurise  the air conditioning  system as 
compressor  hoses, the compressor  should be previously  described,  then connect  the gauge 
sealed  by fully  closing  the relevant  service valve set as detailed  under Charging  and Testing 
(turn  fully clockwise).  It is essential  to ensure Equipment. 
that  both  service  valves are open  before 2. Adjust  both service  valve seats to the mid 
operating  the compressor.  Similarly any...

AIR CONDITIONING 
7. The  low  side  gauge should indicate a  vacuum Sweeping 
of 660 mm  Hg within  five  minutes. 
8. Whilst the system is evacuating,  fill the NOTE: This  operation  is in addition to 
charging  cylinder  by  opening  the  refrigerant evacuating, and is  to  remove  moisture  from 
drum  valve. 
systems that have  been  open 
to atmosphere  for 
9. Open  the valve  at the  base  of the  charging  a long period, or that are known  to contain 
cylinder  and fill the  cylinder  with 1,0...

AIR CONDITIONING 
13. Crack the suction  valve charging  line at the 6. If the full charge of 1,09 kg of liquid  refrigerant 
service  port on the  compressor  to allow  an  will not enter  the system,  then close  the high 
escape  of refrigerant,  at the  same  time  pressure valve (No.2)  and open  the 
low 
observing  the sight  glass in the charging  pressure  valve No.1), ensuring that the low 
cylinder, 
A slight  drop in the  level  should  be 
allowed  before closing  the connection  at the 
7....

AIR CONDITIONING  

AIR CONDITIONING 
COMPRESSOR COMPRESSOR DRIVE BELT 
Remove  Adjust 
1. Site vehicle  in a ventilated  area. 1. Slacken  idler pulley  securing  bolt. 
2.  Disconnect  the battery  negative lead. 
3.  Discharge  the  air  conditioning system, see 
Discharging  system 
WARNING: Wear eye and  hand  protection  when 
disconnecting  components containing 
refrigerant.  Plug all exposed  connections 
immediately. 
4.  Disconnect  suction and discharge  unions  from 
compressor. 
5. Disconnect  electrical lead...