Classification:

Reference:

Date:

EM16-006b

ITB17-004b

August 7, 2019

ACCESSORY DRIVE BELT NOISY OR HAS COME OFF
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Please discard previous versions of this bulletin.

APPLIED VEHICLES:

2016-2017 Q50 (V37)
2017 Q60 (V37)
APPLIED VIN AND DATE: 2016 Q50 (V37) All
2017 Q50 (V37)
Built before:
JN1EV7AP(*)HM 731871 / September 7, 2016
RWD
JN1FV7AP(*)HM 850227 / September 7, 2016
JN1EV7AR(*)HM 832718 / September 7, 2016
AWD
JN1FV7AR(*)HM 870451 / September 7, 2016
2017 Q60 (V37)
Built before:

JN1EV7EK(*)HM 360095 / May 27, 2016
JN1FV7EK(*)HM 610102 / May 27, 2016
JN1EV7EL(*)HM 550025 / May 27, 2016
AWD
JN1FV7EL(*)HM 700062 / May 27, 2016
VR30DDTT (V6 Twin Turbo Engine)
NOTE: Bulletin does not apply to Hybrid vehicles
RWD

APPLIED ENGINE:

IF YOU CONFIRM
The accessory drive belt is noisy,
OR
The accessory drive belt has come OFF of the idler pulley.
ACTION


If the accessory drive belt is currently only noisy, check its alignment with the procedure starting on page 3.



If the accessory drive belt has come OFF of the idler pulley, first replace the accessory drive belt and repair
any collateral damage caused by the belt, and then proceed to Re-align A/C Compressor on page 6.

IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential to
successfully completing this repair.
Infiniti Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are properly trained
individuals who have the equipment, tools, safety instruction, and know-how to do a job properly and safely. NOTE: If you believe
that a described condition may apply to a particular vehicle, DO NOT assume that it does. See your Infiniti retailer to determine if this
applies to your vehicle.
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Flow Chart

The accessory drive belt is noisy,
Or
The accessory drive belt has come OFF of the idler pulley.

Has the accessory belt come OFF of
the idler pulley?
NO

YES

Replace the accessory drive belt
and repair any collateral damage
caused by the belt.


Proceed to Check Accessory Drive
Belt Alignment on page 3.

Refer to the Electronic
Service Manual (ESM) for
component specific repair
information.

Proceed to Re-align A/C Compressor
on page 6.

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ITB17-004b

SERVICE PROCEDURE

Check Accessory Drive Belt Alignment
1. Access the idler pulley by hand.
NOTE: The idler pulley can be reached from the driver’s side of the engine compartment between the
radiator and the front of the engine as shown in Figure 1 and Figure 2.

Figure 1

Idler pulley

Figure 2
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ITB17-004b

Front edge of
accessory belt
2. Measure the gap from the front edge of the belt to
the front edge of the idler pulley shown in Figure 3
as follows:
a. Cut out a 1 inch square piece of paper.

Front edge of
idler pulley

NOTE: A sticky note can be used.

Figure 3

Idler pulley
b. Align the paper to the front edge of belt
(Figure 3 and Figure 4).

1 inch square
piece of paper

c. While holding the paper against the edge of
the belt, fold the paper over the edge of the
idler pulley to create a crease in the paper.
Figure 4

d. Remove the paper and measure the distance
between the crease and the edge of the paper
that was in contact with the belt.

Idler pulley
edge mark

Side against
belt

Figure 5

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ITB17-004b

3. Is the distance of the belt 3.5 mm or more from the front edge of the pulley?
YES: No adjustment is required at this time.


Refer to the ESM for further diagnostic information: ENGINE > ENGINE MECHANICAL >
VR30DDTT.

NO: Proceed to Re-align A/C Compressor.

OK

NG
Belt needs to
be re-aligned

3.5 mm or more

Figure 6

Figure 7

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ITB17-004b

Re-align A/C Compressor
1. Remove the air duct (inlet) shown in Figure 8.
2. Remove the air cleaner body (bank 2).
3. Remove the air cleaner cover (bank 2).
4. Remove the air duct (bank 2).

Figure 8

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ITB17-004b

5. Remove the accessory drive belt.


Refer to the ESM: ENGINE > ENGINE MECHANICAL > VR30DDTT > PERIODIC
MAINTENANCE > DRIVE BELT > Removal and Installation.

6. Recover/recycle the A/C refrigerant.


Refer to the ESM: VENTILATION, HEATER & AIR CONDITIONER > HEATER & AIR
CONDITIONING SYSTEM > VR30DDTT > BASIC INSPECTION > REFRIGERANT > Recycle
Refrigerant.
High pressure
hose

7. Remove the nut holding the high pressure hose to
the A/C compressor, and then disconnect the high
pressure hose.

Nut

NOTE: Do not remove the low pressure hose.

A/C
compressor
Figure 9
8. Loosen the front two (2) A/C compressor mounting bolts shown in Figure 10.


Do not remove the A/C compressor mounting bolts when loosening.

9. Loosen the single rear A/C compressor mounting bolt shown in Figure 10.
Step 9

Step 8

Figure 10
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ITB17-004b

10. Move the A/C compressor up and down to free it from the engine assembly.
11. Push the A/C compressor toward the rear of the vehicle.
12. While holding the A/C compressor toward the rear of the vehicle, tighten the A/C compressor mounting
bolts in the order shown in Figure 11 to 5 N•m, (0.51 kg-m, 44 in-lb).
NOTE: Take care not to move the A/C compressor until the final torquing of the bolts in the next step.
13. Torque the A/C compressor mounting bolts to 30.9 N•m, (3.2 kg-m, 23 ft-lb) in the order shown in
Figure 11.

1

3
2

Figure 11
14. Replace the high pressure hose o-ring, and apply refrigerant oil to the o-ring before reinstalling the high
pressure hose.
15. Reassemble the vehicle in the reverse order of disassembly.
16. Recharge the A/C refrigerant.


Refer to the ESM: VENTILATION, HEATER & AIR CONDITIONER > HEATER & AIR
CONDITIONING SYSTEM > VR30DDTT > BASIC INSPECTION > REFRIGERANT > Charge
Refrigerant.

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ITB17-004b

PARTS INFORMATION
DESCRIPTION

PART NUMBER

QUANTITY

Accessory Drive Belt

11720-5CA0A

1, If Needed

O-ring

92472-N8210

1, If Needed

S-R134A PAG Lube (Refrigerant Oil)

999MP-ND12P (1)

Shop supply

(1) Order through the Infiniti Maintenance Advantage program: Phone: 877-463-4621; website order via link on
dealer portal www.NNAnet.com and click on the “Maintenance Advantage” link.

CLAIMS INFORMATION
DESCRIPTION

PFP

OP CODE

SYM

DIA

FRT

Align A/C compressor (Includes A/C
Evacuate and Recharge)

(1)

TX48AA

ZL

32

1.8

(1) Refer to the Electronic Parts Catalog (EPC) and use the appropriate A/C Compressor part number (92600XXXXX) as the primary failed part.

AMENDMENT HISTORY
PUBLISHED DATE

REFERENCE

DESCRIPTION

February 3, 2017

ITB17-004

Original bulletin published.

March 28, 2018

ITB17-004a

APPLIED VEHICLES and APPLIED VIN AND DATE sections
revised.

August 7, 2019

ITB17-004b

Page 8 and PARTS INFORMATION section revised.

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ITB17-004b