NHTSA ID Number: 10109170
Manufacturer Communication Number: NTB16-110a
TSB/Document Date: 2017-08-01
Summary
2015-2016 ALTIMA; 4 CYLINDER WITH DTC P0776 STORED This bulletin applies only to vehicles equipped with 4-cylinder engine. This bulletin has been amended. Minor changes have been made on pages 1, 4, 16, 19, 29, 32, 35, 40, 46, 47, 53, 56, 65, 69 and 83. No other changes have been made. Please discard previous versions of this bulletin.
7 on the next page.
Figure 5A
Pulley
Front
For additional information, see
video # 544: “CVT Belt Inspection”.
This video is located under the
TECH TRAINING GARAGE
VIDEOS tab in Virtual Academy.
e. If the inspection result is NG, proceed
to step 8 on the next page.
10/83
Figure 6A
NTB16-110a
7. If the belt inspection result is OK, replace only the valve body and reprogram TCM.
For valve body replacement, go to page 64, Control Valve (Valve Body)
Installation.
8. If the belt inspection result is NG, replace the CVT sub-assembly, valve body and
reprogram TCM.
Go to CVT Assembly Removal, page 16.
Inspect these sides
Do not inspect
these sides
Figure 7A
11/83
NTB16-110a
Figure 8A: New belt
Figure 9A: Close-up of section to be inspected
12/83
NTB16-110a
Pictures in Figures 10A and 11A were taken with borescope J-51951.
OK
Visual
lines
Figure 10A: Belt is OK
OK
Visual
lines
Figure 11A: Belt is OK
13/83
NTB16-110a
NG
Scuffing
Figure 12A: Example of NG belt
NG
Lines
“smeared”
Figure 13A: Example of NG belt
14/83
NTB16-110a
Pictures in Figures 14A-16A were taken with borescope J-51951.
NG
Figure 14A: Example of NG belt
NG
Figure 15A: Example of NG belt
NG
Figure 16A: Example of NG belt
15/83
NTB16-110a
CVT Assembly Removal
Overview of Sub-assembly Repair
1. Apply rust penetrant as necessary to the dowel pins on the converter
housing side and sub-assembly side cover
2. Removal of the CVT from the vehicle
3. Remove the Converter Housing, Oil Seals, Oil Pump Cover, Oil Pump
and Oil Filter
4. Clean the CVT case surfaces
5. Clean the Oil Passages in the CVT Case, Oil Pump Cover, and CVT
Filter Area
6. Check initial pulley movement characteristics
7. New Pump Installation
8. Replace the Side Cover – Pulleys and Belt
9. Confirm shift selector movement
10. Recheck new pulley movement characteristics matches that of the
original assembly
11. Clutch Total Endplay Adjustment – Thrust Bearing Selection
12. Clean the Converter Housing Passages
13. CVT Reassembly
14. Control Valve (Valve Body) Strainer and Pan Installation
15. Install the CVT Assembly
NOTE: For additional information review video # 547: “CVT Belt and Pulley
Replacement”.
This video is located under the TECH TRAINING GARAGE VIDEOS tab
in Virtual Academy.
16/83
NTB16-110a
1. Temporarily install the oil pan gasket and oil pan with four oil pan bolts to corners of the
oil pan, hand tight (Figure 1B).
NOTE: If the control valve has not yet been reinstalled, it is not necessary to do so. A
new one will be installed later in this service procedure.
Figure 1B
2. Remove the CVT from the vehicle.
Refer to the Electronic Service Manual (ESM), section TM-Transaxle &
Transmission for removal information.
17/83
NTB16-110a
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 2B
5. Drain CVT fluid out of the torque
converter.
Torque
converter
Figure 3B
Primary speed
sensor
6. Remove the primary speed sensor.
IMPORTANT: The speed sensor will be
re-used.
Figure 4B
18/83
NTB16-110a
Remove the Converter Housing, Oil Seals, Oil Pump Cover, Oil Pump and Oil Filter
1. Remove all 23 converter housing
mounting bolts (see Figure 1C).
NOTE:
o These bolts will be replaced with
new ones and will not be reused.
Dowel Pin
o Apply rust remover to the dowel
pins if needed.
Figure 1C
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 2C and Figure 3C.
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 2C
Figure 3C
19/83
NTB16-110a
3. Note the location of the pin shown in Figure 4C.
CAUTION: This pin can slip out during movement of the CVT while converter housing is
removed.
Figure 4C
4. Remove the O-ring from the input shaft.
This O-ring will be replaced with a
new one.
Figure 5C
5. Carefully remove the reduction gear assembly (Figure 6C).
6. Carefully remove the differential assembly (Figure 7C).
Reduction gear
assembly
Figure 6C
Differential
assembly
Figure 7C
20/83
NTB16-110a
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 8C.
Figure 8C
b. Converter Housing differential side oil
seal (drive shaft seal).
See Figure 9C.
Figure 9C
c. Torque converter seal (Figure 10C).
Figure 10C
21/83
NTB16-110a
8. Remove the two (2) nuts from baffle
plate A, and then remove baffle plate A
(see Figure 11C).
CAUTION: To avoid rounding off
these nuts, it is best to use a 3/8 inch
drive 6-pt 10 mm socket.
Baffle
plate nuts
Baffle
plate A
Figure 11C
9. Remove the oil pump chain, driven and drive sprockets as one assembly (Figure 12C).
Spread the snap ring to remove sprocket (Figure 13C).
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
Figure 12C
Snap ring
Figure 13C
22/83
NTB16-110a
Thrust washer
10. Remove the following:
a. “Pump cover” (dummy cover) thrust
washer (Figure 14C).
This thrust washer will be reused.
Dummy cover
Figure 14C
Snap ring
b. Oil pump snap ring (Figure 15C).
Figure 15C
c. Oil pump bracket (Figure 16C).
Oil pump
bracket
Retained by two bolts.
Figure 16C
23/83
NTB16-110a
11. Remove the three bolts from baffle plate
B, and then remove baffle plate B
(Figure 17C).
Baffle
plate B
Figure 17C
12. Remove the two bolts from baffle plate C,
and then remove baffle plate C
(Figure 18C).
Baffle
plate C
13. Remove the five dummy cover bolts, and
then remove the dummy cover. See
Figure 19C.
Figure 18C
NOTE: These bolts will be reused.
IMPORTANT:
Lift the dummy cover from sides ONLY. Do NOT lift from the input shaft (Figure
19C). This can lift the clutch pack out.
Do NOT remove the lathe cut seals (Figure 20C) from the dummy cover. These
seals will be reused.
Dummy
cover
Do not lift here
Lathe cut
seals
Dummy
cover
Figure 19C
Figure 20C
24/83
NTB16-110a
14. Remove the thrust bearing from the
clutch assembly bore (Figure 21C).
Thrust bearing
NOTE: This bearing will not be re-used.
15. Wipe any metallic debris from the face of
the secondary speed sensor
(Figure 21C).
Secondary
speed sensor
Figure 21C
Oil pan gasket
surface
Top of
CVT
16. Remove the oil pump as follows:
a. Remove the fitting bolt located above
the left rear corner of the oil pan
gasket surface (Figure 22C).
Fitting bolt
Figure 22C
b. Remove the three oil pump Allenhead bolts, and remove the oil pump
(Figure 23C).
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 23C
25/83
NTB16-110a
17. Remove CVT fluid filter as follows:
a. Remove the 4 bolts and then remove
the CVT fluid filter cover (Figure 24C).
NOTE: Bolts will be reused.
CVT fluid filter cover
Figure 24C
b. Remove the CVT fluid filter with
grommet seal and O-ring seal
(Figure 25C).
Fluid filter
Discard the oil filter and seal. They
will be replaced.
Grommet is fitted to the bottom
end of the filter and is included
with replacement filter
(Figure 26C).
O-ring seal
Figure 25C
Grommet
Figure 26C
26/83
NTB16-110a
Clean the CVT case surfaces
1. Thoroughly clean the mating surfaces of the CVT case and Torque Converter Housing.
A plastic scraper can be used.
CAUTION:
DO NOT use sanding discs, similar abrasive tools, or metal blades.
Use brake spray or equivalent solvent and lint-free towels only.
Make sure brake spray or solvents used are compatible with local regulations.
Avoid debris entering into the inside of the CVT.
Make sure rust and debris have been cleaned off of dowel pins and receiving
holes (Figure 1C).
2. Clean the dowel pins and dowel pin receiving holes of any rust or debris (Figure 1D).
NOTE: Use small wire brush or similar tool at the inside surface of dowel pin holes. DO
NOT SCRAPE CVT CASE mating surfaces.
Clean dowel pin
receiving holes
Dowel pin
Figure 1D
27/83
NTB16-110a
Clean the Oil Passages in the CVT Case, Oil Pump Cover, and CVT Filter Area
In the following steps:
Brake spray or a suitable cleaning solvent and compressed air will be used to clean
out oil passages in the CVT assembly.
Make sure the brake spray or solvents are compatible with local regulations.
WARNING: Wear eye / face protection when using compressed air and cleaning
fluids.
CAUTION: Regulate air pressure up to a maximum of 75 PSI.
1. Clean the area where the CVT fluid filter
fits (Figure 2D).
Clean within
this area
Make sure the old filter grommet seal
is removed.
2. Clean the fluid passages to and from the
filter (Figure 2D).
Fluid
passages
Figure 2D
28/83
NTB16-110a
3. Spray brake clean in all oil passages of the CVT case where shown in Figure 3D and
Figure 4D.
Do not spray brake clean into the clutch pack.
4. Apply compressed air in the same passages.
NOTE: Do not stand in front of the passages while using compressed air.
Figure 3D
Apply cleaner, and then
75 PSI maximum air
pressure in these
passages.
Air pressure comes
out these passages.
Figure 4D
5. Temporarily install fluid filter cover.
29/83
NTB16-110a
New Oil Pump Installation
1. Install the new oil pump using three
original Allen-head bolts (Figure 1E).
NOTE:
Finger tighten the Allen-head bolts at
this time.
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TSB/Document ID: NTB16-110a
Replacement Service Bulletin Number:
MFR Communication Date: 2017-02-09
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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