NHTSA ID Number: 10109257
Manufacturer Communication Number: NTB17-039
TSB/Document Date: 2017-08-01
Summary
2013-2014 PATHFINDER; CVT JUDDER AND DTC P17F0 OR P17F1 STORED IF YOU CONFIRM The customer reports a transmission judder (shake, shudder, single or multiple bumps or vibration) AND One of these DTCs is stored. - P17F0 (CVT_JUDDER (T/M INSPECTION)) - P17F1 (CVT_JUDDER (C/U INSPECTION)) NOTE: - If a transmission judder (as described above) is not reported, this bulletin does not apply. - If either P17F0 or P17F1 are not stored, this bulletin does not apply. - If any DTCs are stored other than P17F0 or P17F0, this bulletin does not apply. - NTB15-014, Enhanced Diagnostic Logic For CVT Judder, has reprogramming instructions that may apply. ACTION - Refer to the Repair Flow Chart on page 2 for CVT repair. CAUTION: Always handle the CVT and component assemblies carefully and with the appropriate lifting tools.
------
Front
Driver side
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 #564 if needed (see bottom of page 7).
YES: Proceed to step 7.
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 73, 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.
Scuff marks
caused by
slippage
NG
NG
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. Clean the CVT Case Surfaces
6. Clean Oil Passages in CVT Case, Oil Pump Cover, and CVT Filter Area
7. Install New Oil Pump
8. Temporarily Install Dummy cover, Torque Converter Housing and Filter Cover
9. Check Pulley Movement Characteristics
10. Install Sub-assembly – Pulley, Chain and Side Cover
11. Remove Side Cover and Install Lubrication Caps
12. Apply Sealant, Install Side Cover and Bracket Bolts
13. Confirm Parking Rod Operation
14. Check New Pulley Movement Characteristics
15. Torque Bracket Bolts
16. Adjust Total Thrust Bearing End-play
17. Clean Torque Converter Housing, Dummy
Cover and Baffle Plates
18. CVT Reassembly
19. Install Valve Body, Strainer, and Pan
20. 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 Electronic Service Manual (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
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).
This snap ring will be reused.
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 (Figure 20B) from the dummy cover. These
seals will be reused.
Dummy
cover
Dummy
cover
Do not
lift here
Lathe cut
seals
Figure 19B
Figure 20B
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Thrust bearing
14. Remove the thrust bearing from the
clutch assembly (Figure 21B).
NOTE:
This bearing will not be re-used.
15. Wipe any metallic debris off of the face of
the secondary speed sensor
(Figure 21B).
Secondary
speed sensor
Figure 21B
Top of
CVT
Oil pan gasket
surface
16. Remove the oil pump as follows:
a. Remove the fitting bolt located above
the corner of the oil pan gasket
surface (Figure 22B).
Fitting bolt
Figure 22B
b. Remove the three oil pump Allenhead bolts, and remove the oil pump
(Figure 23B).
NOTE:
o Do NOT discard the Allen-head
bolts. Bolts will be re-used.
o New oil pump will be installed
at later steps.
Figure 23B
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17. Remove CVT fluid filter as follows:
a. Remove the four (4) bolts and then
remove the CVT fluid filter cover
(Figure 24B).
NOTE: Bolts will be reused.
CVT fluid filter cover
Figure 24B
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TSB/Document ID: NTB17-039
Replacement Service Bulletin Number:
MFR Communication Date: 2017-04-27
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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