NISSAN LATIO 2011 Service Repair Manual

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7. Manifold gauge set (J-39183) A. Prefe rred (best) method B. Alternative method
C. For charging
*1 MTC-17, "
Maintenance of Oil Quanti-
ty in Compressor"
*2MTC-92, "Checking of Refrigerant
Leaks"
*3 MTC-93, "Electronic Refrigerant
Leak Detector"
*4MTC-46, "Insufficient Cooling"
WJIA1923E
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MTC-76
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Component
INFOID:0000000005930871
MR18DE - Type 1 and HR16DE
WJIA2200E
1. Evaporator 2. Expansion valve 3. Low-pressure service valve
4. High-pressure service valve 5. Refrigerant pressure sensor 6. Shaft seal
7. Drain hose
Revision: May 2010 2011 Versa

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MR18DE - Type 2
WJIA2202E
1. Evaporator 2. Expansion valve3. Low-pressure service valve
4. High-pressure service valve 5. Refrigerant pressure sensor 6. Shaft seal
7. Drain hose
Revision: May 2010 2011 Versa

MTC-78
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Idler Pulley - Without A/C
Refer to MTC-5, "Precaution for Refrigerant Connection".
Removal and Installation of Compressor - HR16DEINFOID:0000000005930872
HR16DE
REMOVAL
WJIA2204E
1. Idler pulley 2. Bracket3. Shaft
ALIIA0093GB
Revision: May 2010 2011 Versa

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1. Use the recovery/recycling equipment to evacuate the refrigerant. Refer to MTC-74, "HFC-134a (R-134a)
Service Procedure".
2. Disconnect the low-pressure flexible hose nut (A) and high-pres- sure flexible hose bolt (B) and remove the hoses from compres-
sor.
CAUTION:
Cap or wrap the joint of co mpressor, low-pressure flexible
hose and high-pressure flexible hose with suitable material
such as vinyl tape to avoid the entry of air.
3. Disconnect the compressor harness connector (C)
4. Remove the engine undercover, using power tools.
5. Remove the A/C drive belt. Refer to EM-14, "
Removal and Installation".
6. Remove the bolts (A) from the compressor (1), using power tools.
7. Remove the compressor (1) downward from the engine com- partment.
INSPECTION FOR CLUTCH DISC TO PULLEY CLEARANCE
1. Check the clearance around the entire periphery of the clutch
disc and pulley using a suitable tool as shown.
2. If specified clearance is not obtained, replace compressor.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Replace O-rings of low-pressure flexible hose and high-pressure flexible hose with new ones, and
apply compressor oil when installing.
• When recharging refrigerant, check for leaks. Refer to MTC-92, "
Checking of Refrigerant Leaks".
SJIA0671E
SJIA0672E
Clutch disc to pulley clearance : 0.3 - 0.6 mm
(0.012 - 0.024 in)
RHA087E
Revision: May 2010 2011 Versa

MTC-80
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REFRIGERANT LINES
Removal and Installation of Compressor - MR18DE
INFOID:0000000005930873
MR18DE
REMOVAL
1. Use the recovery/recycling equipment to evacuate the refrigerant. Refer to MTC-74, "HFC-134a (R-134a)
Service Procedure".
2. Remove the nut (A) for the low-pressure flexible hose (1) and the bolt (B) for the high-pressure flexible hose (2) and remove
the hoses from the compressor.
CAUTION:
Cap or wrap the joint of co mpressor, low-pressure flexible
hose and high-pressure flexibl e hose with suitable material
such as vinyl tape to avoid the entry of air.
3. Remove the engine undercover, using power tools.
4. Remove A/C compressor belt. Refer to EM-132, "
Removal and Installation".
5. Disconnect compressor connector.
6. Remove bolts (A) from compressor (1), using power tools.
7. Remove compressor (1) downward from the engine compart- ment.
ALIIA0092GB
E1KIA0067ZZ
SJIA0672E
Revision: May 2010 2011 Versa

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INSPECTION FOR CLUTCH DISC TO PULLEY CLEARANCE
1. Check the clearance (B) around the entire periphery of the clutch disc (1) and pulley (2) usi ng a suitable tool (A) as shown.
2. If specified clearance (B) is not obtained, replace compressor.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Replace O-rings of low-pressure flexible hose and high-pressure flexible hose with a new ones, and
apply compressor oil when installing.
• When recharging refrigerant, check for leaks. Refer to MTC-92, "
Checking of Refrigerant Leaks".
Removal and Installation for Compressor Clutch - Type 1INFOID:0000000005930874
REMOVAL
1. Remove the compressor. Refer to MTC-78, "Removal and Installation of Compressor - HR16DE".
2. Remove the center bolt by holding the clutch disc steady using Tool.
3. Remove the clutch disc and shim(s). CAUTION:
Retain shim(s) for installation.
4. Remove the snap ring using external snap ring pliers.
5. Remove the pulley assembly using suitable tool (A). CAUTION:
To prevent deformation of the pulley groove, the puller
claws should be hooked under (not into) the pulley groove.
Clutch disc to pulley clearance (B) : 0.3 - 0.6 mm
(0.012 - 0.024 in)
AWIIA0273ZZ
Tool number : (J-44614)
WHA228
RHA072C
AWIIA1285ZZ
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MTC-82
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REFRIGERANT LINES
6. Remove the magnet coil snap ring (A) using a suitable tool.Then remove the magnet coil (1) from compressor shaft.
INSPECTION AFTER REMOVAL
Clutch Disc
If the contact surface shows signs of damage due to excessive heat, replace clutch disc and pulley.
Pulley
Check the appearance of the pulley assembly. If the cont act surface of the pulley shows signs of excessive
grooving, replace the clutch disc and pulley. The contact surfaces of the pulley assembly should be cleaned
with a suitable solvent before installation.
Coil
Check the magnet coil for a loose connection or cracked insulation.
INSTALLATION
1. Install the magnet coil.
CAUTION:
Be sure to align the magnet coil pin with the hole in the
compressor front head.
2. Install the magnet coil (1) on the compressor shaft with the snap ring (A) using suitable tool.
ALIIA0379ZZ
WHA213
ALIIA0379ZZ
Revision: May 2010 2011 Versa

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3. Install the pulley assembly using Tool and a wrench, and then install the snap ring using snap ring pliers.
4. Install the clutch disc on the drive shaft, together with the original shim(s). Press the clutch disc down using the drive plate
installer.
5. Install the center bolt using Tool. • After tightening the center bolt to specification, check that thepulley rotates smoothly.
INSPECTION OF CLUTCH DISC TO PULLEY CLEARANCE
1. Check the clearance around the entire periphery of the clutch
disc.
2. If specified clearance is not obt ained, replace compressor clutch.
BREAK-IN OPERATION
When replacing compressor clutch assembly, always conduct the break-in operation. This is done by engag-
ing and disengaging the clutch about 30 times. Break-in operation raises the level of transmitted torque.
Removal and Installation for Compressor Clutch - Type 2INFOID:0000000005930875
REMOVAL
1. Remove the compressor. Refer to MTC-80, "Removal and Installation of Compressor - MR18DE".
Tool number : — (J-38873-A)
WJIA1016E
WHA184
Center bolt : 12 N·m (1.2 kg-m, 9 ft-lb).
Tool number : (J-44614)
WHA229
Clutch disc to
pulley clearance
: 0.3 - 0.6 mm (0.012 - 0.024 in)
RJIA1886E
Revision: May 2010
2011 Versa

MTC-84
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2. Remove the three rubber plugs (1) from the clutch disc (2). Toease removal, apply some light lubricant to the three rubber
plugs (1).
NOTE:
The three rubber plug holes are used for attaching the suitable
tool when removing and installing the center bolt.
3. Remove the center bolt by holding the clutch disc steady using a suitable tool (A).
4. Remove the clutch disc and shim(s).
5. Remove the snap ring using external snap ring pliers.
6. Remove the pulley assembly using suitable tool (A). CAUTION:
To prevent deformation of th e pulley groove, the puller
claws should be ho oked under (not into) the pulley groove.
7. Remove the magnet coil snap ring (A) using a suitable tool. Then remove the magnet coil (1) from compressor shaft.
ALIIA0381ZZ
LJIA0201E
RHA072C
AWIIA1285ZZ
ALIIA0379ZZ
Revision: May 2010 2011 Versa