Relubricating - jcb 214e Service Manual

www.WorkshopManuals.co.uk
Section B
20 - 5
Air Conditioning
- Refrigerant Charging and Discharging
Note: The procedures for refrigerant charging and
discharging must only be carried out by qualified service
personel who have received specialist training on the air
conditioning system.
! WARNING
The air conditioning system is a closed loop system and
contains pressurised refrigerant. No part of the system
should be disconnected until the system has been
discharged by a refrigeration engineer or a suitable
trained person. You can be severely frostbitten or injured
by escaping refrigerant.
4-3-4-1/2

Relubricating

Pre-lubrication is essential after recovering system
refrigerant, vacuuming and component flushing.
The system should be evacuated to a vacuum of 740mm (29
in) of mercury before re-lubricating.
1 Ensure that the engine is OFF and the starter key is
removed.
2 Close all valves and connect the manifold as shown,
with the blue hose connected to the oil injector and the
red hose to the system high pressure port.
3 Connect the yellow hose to the vacuum pump.
4 Connect the other end of the oil injector to the system
low pressure point.
5 Switch on the vacuum pump and open the high
pressure side valve.
6 Unscrew the oil injector cap and add the specified
quantity of refrigerant oil.
7 When 740mm (29 in) mercury shows on the vacuum
gauge, open the oil injector valve to allow the oil into
the system.
If more oil is needed repeat the above procedure. The
8
quantity of oil should be the same as that taken out
during the 'Recovery' procedure.
9803/3280
Body & Framework
Service Procedures
Purchased from www.WorkshopManuals.co.uk
Lo
To system Low
Pressure port.
Valve OPEN
Oil Injector
Oil injector valve -
Open when full
vacuum is obtained.
Notes:
Use only PAG oil in R-134a systems.
Section B
20 - 5
Hi
To system High
Pressure port.
Valve OPEN
Vacuum Pump
To system Low
Pressure port.
A396800
Issue 1