1152
Model Code Page
83. Air conditioner
1. 8. 2000
6000--8950 831 10
1. 1. 1994
5. Changing refrigerant R12 to R134a.
If the R134a refrigerant is changed to the air conditioners which have refrigerant R12, the following components should also be
changed:
--- Dryer reservoir
--- Pressure switch
--- C o m p r e ss o r
--- Compressor service valves
--- A l l O --- ri n g s
--- All hoses if the tractor has been manufactured before March 92 (---657500)
When the parts have been changed, fill the system with refrigerant R134a and run the air conditioner about one hour. Empty then
the system and the compressor and fill the compressor with new oil (2,0 dl oil ZXL 100 PG (DH---PS) (Valtra UC 1300) and fill the
system again with the refrigerant 134a.
Two oil changes must still be carried out at intervals of 100 running hours after which the earlier mineral oil has been removed from
the system.
Note! If you have a specialcharging device (AKA force method)the oil changes after fillingis unnecessary but the system isevacu-
ated 0,5---1 hours, after which the air conditioner can be charged finally.
Part numbers
Order no
Dryer reservoir 32814800........................................................
Pressure switch 32844300.........................................................
Pressure switch O---ring 32275210..................................................
Dryer reservoir hose O---rings (2 pcs) 30414910......................................
Compressor 32838600...........................................................
Service valve S (LH side) 32839000.................................................
Service valve (S) O---ring against compressor 30415110...............................
Service valve D (RH side) 32838800................................................
Service valve (D) O---ring against compressor 30415010...............................
LH side valve (S) upper end O---ring 30415110.......................................
RH side valve (D) upper end O---ring 30415010.......................................
Note! When fitting the compressor, adjust the distance between the support and compressor to 0,1 mm with shims.
Condenser hos e O---rings:
Front hose O---ring 30415010......................................................
Rear hose O---ring 30414910......................................................
Expansion valve O---rings:
Upper hose O---ring 30415110.....................................................
Lower hose O---ring 30414910.....................................................
O---rings (2 pcs) o n the evaporator side tubes 30415010...............................
Note! Before changing the expansion valve O---rings, the insulating mass should be removed. After fitting, cover the valve with
mass no 30794000.
Up to ser. no 657500 all the rubber hoses should be changed
(tractors manufactured before March 92):
Hose between compressor and condenser 32849100.................................
Hose between condenser and drier reservoir:
--- 3/4---cylinder engines 32862900.................................................
--- 6---cylinder engines 32849500...................................................
Hose between drier reservoir and expansion valve 32849400...........................
Hose between expansion valve and compressor:
--- 3/4---cylinder engines 32849300.................................................
--- 6---cylinder engines 32849200...................................................
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