Guide
rail
------

------

Front

Driver side

Step 3a
Step 3b

Figure 5
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

Figure 6 shows where to insert the camera lens on the driver side of the chain.
Chain
Pulley
Guide
rail
Camera
cable
------

------

------

Figure 6



Figure 7 shows where to insert the camera lens on the passenger side
of the chain.
Chain
Pulley
Guide
rail
Camera
cable
------

------

------

Figure 7

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

Figures 8 and 9 shows the routing and location of the camera.

NOTE: The CVT’s side cover was removed for easier viewing of camera location.
The side cover is not to be removed during boroscope inspection.

UP

Front of vehicle

Camera lens
positioned behind
plastic guide

Camera
cable

Primary pulley:
Camera cable
routed past
primary pulley

Figure 8

For best picture,
position camera
lens 10 mm away
from chain
Figure 9
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3c. Slowly and carefully turn the left front
tire one full turn in the forward rotation
to view all of the chain.


Holding the borescope with one
hand allows for turning the tire with
the other hand (see Figure 10).

CAUTION: If the tire is rotated in the
rearward rotation, the camera lens
may get caught between the chain
and pulley.
Figure 10
d. Is the chain OK on all 360° of both surfaces?


Refer to Garage Video #546 if needed (see page 7).

YES: Proceed to step 4.
NO: If the chain inspection result is NG, proceed to CVT Assembly Removal on
page 16.
4. Flush the CVT cooler(s).
IMPORTANT: A CVT Cooler flush is required after a valve body or CVT sub-assembly
replacement. Refer to bulletin NTB15-013 to perform CVT Cooler flush.
5. Replace the valve body.
 For valve body replacement, go to page 85, Control Valve (Valve Body) Strainer
and Pan Installation.

Inspect this side
Inspect this side
Do not inspect
this side

Do not inspect
this side

Figure 11
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Figure 12: CVT chain

Inspect these surfaces

Figure 13: Close-up of area to be inspected

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Pictures in Figure 14 and 15 were taken with borescope J-51951.

OK

OK

Writing will show as
reversed; this is normal
Figure 14

Figure 15

OK

Figure 16

OK

Figure 17

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Pictures in Figure 18-19 were taken with borescope J-51951.

NG

NG

Scuff marks
caused by
slippage

Figure 18

Figure 19

NG

Figure 20

NG

Figure 21

NG

Figure 22
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CVT Assembly Removal
Overview of Sub-assembly Repair
1. Precautions When Disassembling a CVT Assembly
2. Remove the CVT
3. Apply rust penetrant to dowel pins
4. Remove Converter Housing, Oil Seals, Oil Pump Cover, Oil Pump, Oil Filter
5. Confirm Thrust Bearing Type
6. Clean the CVT Case Surfaces
7. Clean Oil Passages in CVT Case, Oil Pump Cover, and CVT Filter Area
8. Install New Oil Pump
9. Temporarily Install Dummy cover, Torque Converter Housing and Filter Cover
10. Check Pulley Movement Characteristics
11. Install Sub-assembly – Pulley, Chain and Side Cover
12. Remove Side Cover and Install Lubrication Caps
13. Apply Sealant, Install Side Cover and Bracket Bolts
14. Confirm Parking Rod Operation
15. Check New Pulley Movement Characteristics
16. Torque Bracket Bolts
17. Adjust Total Thrust Bearing End-play
18. Clean Torque Converter Housing, Dummy
Cover and Baffle Plates
19. CVT Reassembly
20. Install Valve Body, Strainer, and Pan
21. Install CVT Assembly

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Remove the CVT

1. Temporarily install the oil pan gasket and
oil pan with four oil pan bolts to corners of
the oil pan, hand tight (Figure 1A).
NOTE: A new valve body will be installed
later in this procedure.

Figure 1A

2. Remove the CVT from the vehicle.


Refer to the ESM, section TM-Transaxle & Transmission for removal information.

AWD Vehicles
CAUTION:


Use extreme care when moving the axle in and out of the transfer assembly.



To avoid seal damage or deformation, properly support and guide the axle.

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3. Place the CVT on a workbench with the
oil pan side down.


Use wood or plastic blocks to keep
the CVT steady.
CAUTION: Do not deform the oil pan.

4. Remove the torque converter.

Figure 2A

5. Drain CVT fluid out of the torque
converter.

Torque
converter
Figure 3A

Primary speed
sensor
6. Remove the primary speed sensor.
IMPORTANT: The speed sensor will be
re-used.

Figure 4A

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Remove the Converter Housing, Oil Seals, Oil Pump Cover, Oil Pump and Oil Filter

1. Remove all 24 converter housing
mounting bolts (see Figure 1B).
NOTE:


These bolts will be replaced with
new ones and will not be reused.



Apply rust remover to the dowel
pins if needed.

Dowel Pin

Figure 1B

2. Separate and then remove the converter housing from the CVT case.


Use Slide Hammer J-25721-A and Slide Hammer Bolt J-50255-UPD with J-Hook J51923 at the cut out areas similar to the one shown in Figure 2B and Figure 3B.



Work around the CVT at specified areas, repeatedly until case halves separate.
CAUTION: DO NOT use a pry-bar, chisel, etc. to separate the side cover from
the CVT case.

J-25721-A
-----

J-50255-UPD
-----

J-51923

One of three
cutout areas

Figure 2B

Figure 3B

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3. Note the location of the pin shown in Figure 4B.
CAUTION: This pin can slip out during movement of the CVT while converter housing is
removed.

Figure 4B

O-ring

4. Remove the O-ring from the input shaft.


This O-ring will be replaced with a
new one.

Figure 5B
5. Carefully remove the reduction gear assembly (Figure 6B).
6. Carefully remove the differential assembly (Figure 7B).
Reduction gear
assembly

Differential
assembly

Figure 6B

Figure 7B
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7. Remove the following oil seals using
suitable tools:
CAUTION: Be careful not to damage any
of the seal bore surfaces.

a. CVT case differential side oil seal

(drive shaft seal).


See Figure 8B.

Figure 8B

b. Torque converter seal (Figure 9B).

Figure 9B

c. Converter Housing differential side

right hand oil seal (drive shaft seal).


See Figure 10B.

NOTE: All wheel drive transfer case
O-ring will be replaced later in this
procedure.

Figure 10B

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Baffle
plate nuts
8. Remove the two (2) nuts from baffle
plate A, and then remove baffle plate A
(see Figure 11B).

Figure 11B

Baffle
plate A

9. Remove the oil pump chain, driven and drive sprockets as one assembly (Figure 12B).


Spread the snap ring to remove sprocket (Figure 13B).
IMPORTANT: The drive sprocket has a specific top and bottom. Keep the sprockets
and chain together after removed.

Drive sprocket

Driven sprocket
Oil pump chain
Snap ring
Figure 12B

Figure 13B

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Thrust washer

10. Remove the following:

a. “Pump cover” (dummy cover) thrust

washer (Figure 14B).


This thrust washer will be reused.
Dummy cover

Figure 14B

Snap ring
b. Oil pump snap ring (Figure 15B).



Lightly push the ends of the snap
ring together, rotate one side
upwards while pulling the snap
ring towards the pump opening.



This snap ring will be reused, do
not discard.

Figure 15B

Oil pump
bracket

c. Oil pump bracket (Figure 16B).


Retained by two bolts.

Figure 16B

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11. Remove the four (4) bolts from baffle
plate B, and then remove baffle plate B
(Figure 17B).
Baffle
plate B
Figure 17B

12. Remove the two (2) bolts from baffle
plate C, and then remove baffle plate C
(Figure 18B).

Baffle
plate C

13. Remove the five (5) dummy cover bolts,
and then remove the dummy cover. See
Figure 19B.
NOTE: These bolts will be reused.
Figure 18B
IMPORTANT:




Lift the dummy cover from sides ONLY. Do NOT lift from the input shaft (Figure
19B); this can lift the clutch pack out.
Confirm that the input shaft O-ring has been removed. If not removed it can cause
the clutch pack to lift out.
Do NOT remove the lathe cut seals (white seals, Figure 20B) from the dummy cover.
These seals will be reused.
Dummy
cover

Dummy
cover

Do not
lift here
Lathe cut seals
(white seals)

Figure 19B

Figure 20B
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IMPORTANT:


Depending on the model year and make of the vehicle there will be one of two
different dummy covers and corresponding clutch packs; Type 1 (Thrust Bearing)
and Type 2 (Thrust Bearing with Bearing Race) – See Figures 22B and 23B.
 MY13-14 Pathfinder, MY13-17 Altima, and MY16-17 Maxima use Type 1 (Thrust
Bearing).
 MY15-17 Pathfinder, MY15-17 Murano and MY15-17 Quest use Type 2 (Thrust
Bearing with Bearing Race).
 Please see page 105 for Type 1 and Type 2 Additional Reference Images.
Type 1

14. For Type 1 remove the thrust bearing
from the clutch assembly (Figure 21B)
and then proceed to step 16.


For Type 2, proceed to step 15.



This bearing will not be re-used.

Thrust
bearing
Secondary
speed sensor
Figure 21B

15. For Type 2, remove the thrust bearing from clutch assembly (Figure 22B) and bearing
race from the dummy cover (Figure 23B).


These will be re-used later.

16. Wipe any metallic debris off of the face of the secondary speed sensor (Figure 21B).
NOTE: The position of the secondary speed sensor is the same for Type 1 or Type 2.

Thrust
bearing

Thrust
bearing race

Figure 22B

Figure 23B
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Top of
CVT

Oil pan gasket
surface

17. Remove the oil pump as follows:
a. Remove the fitting bolt located above
the corner of the oil pan gasket
surface (Figure 24B).