COMPRESSOR(for 8NR-FTS) INSTALLATION

CAUTION / NOTICE / HINT

Note

for HFO-1234yf (R1234yf):

Always use ND-OIL 12 as the compressor oil.
The oil used for HFC-134a (R134a) systems (ND-OIL 8) does not work well in HFO-1234yf (R1234yf) systems. If the oil used for HFC-134a (R134a) systems (ND-OIL 8) is used in an HFO-1234yf (R1234yf) system, it will result in degradation of the refrigerant and deterioration of resin parts.

for HFC-134a (R134a):

The recommended compressor oil listed on the compressor assembly and on the engine hood may differ. Make sure to use the compressor oil listed on the engine hood.
If ND-OIL 12 is mixed with the ND-OIL 8 in the system, the performance of the air conditioning system will not be affected.

PROCEDURE

INSPECT COMPRESSOR OIL

When replacing the compressor assembly with pulley with a new one, gradually discharge the inert gas (helium) from the service valve, and drain the following amount of oil before installation.
Note
- If a new compressor assembly with pulley is installed without removing the same amount of compressor oil as is remaining in the pipes, the amount of compressor oil will be excessive. This prevents heat exchange in the refrigerant cycle and will cause the air conditioning system to malfunction.
- A certain amount of compressor oil remains in the compressor assembly with pulley during circulation and the compressor may be damaged if the amount of compressor oil is more/less than this amount. Therefore, make sure to adjust the amount of compressor oil correctly.
- If the amount of compressor oil remaining in the removed compressor assembly with pulley is excessively low, check for compressor oil leaks.
- Do not race the engine before replacing the compressor assembly with pulley.
- for HFC-134a(R134a): Make sure to use ND-OIL 8 or equivalent compressor oil.
- for HFO-1234yf(R1234yf): Make sure to use ND-OIL 12 or equivalent compressor oil.
Remove the drain bolt (seal washer) from the removed compressor assembly with pulley.
Drain the compressor oil from the oil port of the removed compressor assembly with pulley as shown in the illustration.

Note

Make sure to drain the compressor oil from the oil port.

*a Oil Port *b Turn Clockwise
Remove the drain bolt (seal washer) from the new compressor assembly with pulley.

Tech Tips

The drain bolt (seal washer) can be reused.

Drain the following amount of compressor oil from the oil port of the new compressor assembly with pulley as shown in the illustration.

Standard
(The amount of oil in a new compressor assembly with pulley: 70 (+15) cc (2.37 (+0.51) fl.oz)) - (The amount of oil in the removed compressor assembly with pulley) = The amount of oil to be removed from the new compressor assembly with pulley.

Note

Make sure to drain the compressor oil from the oil port.
Make sure to add the compressor oil from the oil port, not from the discharge or intake port.
If a tool is used to add compressor oil to the new compressor assembly with pulley, make sure that it is free of foreign matter.
If the amount of compressor oil remaining in the removed compressor assembly with pulley cannot be estimated because the compressor was damaged and oil was discharged due to a frontal collision, etc., install the new compressor assembly with pulley without removing any oil. If the condenser with receiver assembly is also replaced, do not add the specified amount of compressor oil for condenser with receiver assembly replacement (40 cc (1.35 fl.oz)).

Oil Port

Turn Clockwise

Install the drain bolt (seal washer) to the new compressor assembly with pulley.

Torque:

30 N*m { 306 kgf*cm, 22 ft.*lbf }

Note

Make sure that there is no damage or foreign matter on the seal washer edge.

INSTALL COMPRESSOR ASSEMBLY WITH PULLEY
1. Using an E8 "TORX" socket wrench, temporarily install the compressor assembly with pulley with the 2 stud bolts.
  
  Torque:
  
  9.8 N*m { 100 kgf*cm, 87 in.*lbf }
  
  Tech Tips
  
  Tighten the stud bolts in the order shown in the illustration to temporarily install the compressor assembly with pulley.
2. Bolt
  
  Nut
  
  Install the compressor assembly with pulley with the 2 bolts and 2 nuts.
  
  Torque:
  
  25 N*m { 255 kgf*cm, 18 ft.*lbf }
  
  Tech Tips
  
  Tighten the bolts and nuts in the order shown in the illustration to install the compressor assembly with pulley.
3. Connect the connector.

CONNECT SUCTION HOSE SUB-ASSEMBLY

Remove the vinyl tape from the suction hose sub-assembly.

Sufficiently apply compressor oil to a new O-ring and the fitting surface of the compressor assembly with pulley.

Refrigerant	Compressor Oil
HFC-134a (R134a)	ND-OIL 8 or equivalent
HFO-1234yf (R1234yf)	ND-OIL 12 or equivalent

Install the O-ring to the suction hose sub-assembly.
Connect the suction hose sub-assembly to the compressor assembly with pulley with the bolt.

Torque:

9.8 N*m { 100 kgf*cm, 87 in.*lbf }

CONNECT DISCHARGE HOSE SUB-ASSEMBLY

Remove the vinyl tape from the discharge hose sub-assembly.

Sufficiently apply compressor oil to a new O-ring and the fitting surface of the compressor assembly with pulley.

Refrigerant	Compressor Oil
HFC-134a (R134a)	ND-OIL 8 or equivalent
HFO-1234yf (R1234yf)	ND-OIL 12 or equivalent

Install the O-ring to the discharge hose sub-assembly.
Connect the discharge hose sub-assembly to the compressor assembly with pulley with the bolt.

Torque:

9.8 N*m { 100 kgf*cm, 87 in.*lbf }

INSTALL NO. 1 ENGINE UNDER COVER

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INSTALL V-RIBBED BELT

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CHARGE AIR CONDITIONING SYSTEM WITH REFRIGERANT (for HFC-134a(R134a))

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CHARGE AIR CONDITIONING SYSTEM WITH REFRIGERANT (for HFO-1234yf(R1234yf))

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WARM UP ENGINE (for HFC-134a(R134a))

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WARM UP ENGINE (for HFO-1234yf(R1234yf))

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INSPECT FOR REFRIGERANT LEAK (for HFC-134a(R134a))

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INSPECT FOR REFRIGERANT LEAK (for HFO-1234yf(R1234yf))

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	Bolt
	Nut