oil NISSAN LATIO 2009 Service Workshop Manual

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DISASSEMBLY
Place control valve assembly with control valve upper body (1) side
down. Remove bolts (A) to (G), reamer bolts (F), nuts and support
plates (4) according to the following procedures. Separate control
valve upper body (1), control valve inter body (2) and control valve
lower body (3). 1. Pilot filter 2. Control valve upper body 3. Steel ball
4. Separating plate 5. Control valve inter body 6. Steel ball
7. Support plate 8. Separating plate 9. Control valve lower body
10. Line pressure relief valve spring 11. Check ball 12. Torque converter pressure holding spring
13. Solenoid valve assembly 14. Terminal body 15. O-ring
16. O-ring 17. O-ring 18. Oil strainer SCIA7058E

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Check wire netting of oil strainer for damage. Replace if necessary.
Shift Solenoid Valves “A and B”, Line Pressure Solenoid Valve, Torque Conv erter Clutch Solenoid Valve and Overrun
Clutch Solenoid Valve
Measure resistance.
• For shift solenoid valve A, refer to AT-142, " Component Inspec-
tion " .
• For shift solenoid valve B, refer to AT-147, " Component Inspec-
tion " .
• For line pressure solenoid valve, refer to AT-138, " Component
Inspection " .
• For torque converter clutch solenoid valve, refer to AT-127, " Com-
ponent Inspection " .
• For overrun clutch solenoid valve, refer to AT-152, " Component
Inspection " .
A/T Fluid Temperature Sensor Measure resistance.
• For A/T fluid temperature sensor, refer to AT-161, " Component
Inspection " .
Line Pressure Relief Valve Springs and To rque Converter Pressure Holding Spring
• Check each spring for damage or deformation. Also measure free length and outer diameter. Refer to AT-374, " Control Valves " .
• Replace springs if deformed or fatigued.
ASSEMBLY SCIA3485E
SAT138D

AT-286< SERVICE INFORMATION >
REPAIR FOR COMPONENT PARTS
1. Install control valve upper, inter and lower body.
a. Place oil circuit of control valve upper body face up. Install steel balls in their proper positions.
b. Install reamer bolts (F) from bottom of control valve upper body (1). Using reamer bolts (F) as guides, install separating plate (2)
as a set.
c. Install pilot filter (1) on control valve upper body (2).
d. Place control valve inter body as shown (side of control valve lower body face up). Install steel balls in their proper positions.
e. Install control valve inter body (1) on control valve upper body (2) using reamer bolts (F) as guides.
CAUTION:
Be careful not to dislocate or drop steel balls. SAT871J
SCIA7010E
SCIA7011E
SAT870J
SCIA7012E

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d. Remove reamer bolts (F), and then set oil strainer (1) on control
valve assembly
e. Install and tighten bolts (A), (D), reamer bolts (F) and nuts to the specified torque.
f. Tighten bolts (E) to the specified torque.
Control Valve Upper Body INFOID:0000000004305518
COMPONENTS

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1. Check operation of reverse clutch
a. Install seal rings to drum support of oil pump assembly, and set reverse clutch assembly.
b. Apply compressed air into the oil hole at the location as shown.
c. Check to see that retaining plate moves to snap ring.
d. If retaining plate does not contact snap ring: • D-ring might be damaged.
• Seal lip might be damaged.
• Fluid might be leaking past piston check ball.
2. Remove snap ring (1) using a suitable tool (A).
3. Remove retaining plate, drive plates, driven plates and dish plates.
4. Set Tool (A) on spring retainer assembly, and remove snap ring (1) from reverse clutch drum while compressing spring retainer
assembly.
CAUTION:
Set SST directly over return springs.
5. Remove spring retainer assemb ly from reverse clutch drum.
CAUTION:
Do not remove return springs from spring retainer.
6. Install seal rings to drum support of oil pump assembly (1), and set reverse clutch drum (2). Then apply compressed air into the
oil hole at the location as shown in the figure to remove reverse
clutch piston (3) from reverse clutch drum (2).
CAUTION:
Do not flow air in too quickly or reverse clutch piston (3)
and ATF could jump out. Carefull y flow air in little by little
while protecting with lint-free cloth.

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• Make sure that check balls are not fixed.
• Apply compressed air to check ball oil hole opposite from return spring. Make sure there is no air leakage.
• Apply compressed air to oil hole on return spring side to make sure
that air leaks past ball.
Reverse Clutch Drum Check for deformation or damage. Replace if necessary.
ASSEMBLY 1. Install D-ring (1) and seal lip (2) on reverse clutch piston (3). CAUTION:
Be careful with the di rection of seal lip (2).
2. Install reverse clutch piston by turning it slowly. CAUTION:
Apply ATF to inner surface of reverse clutch drum.
3. Install spring retainer assembly (1) to reverse clutch piston (2). SCIA6000J

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7. Measure clearance between retaining plate and snap ring using
feeler gauge. If not within allowable limit, select proper retaining
plate. Refer to “Parts Information” for retaining plate selection.
8. Check operation of reverse clutch.
High Clutch INFOID:0000000004305521
COMPONENTS
DISASSEMBLY 1. Check operation of high clutch.
a. Apply compressed air into the oil hole (A) of input shaft assem- bly (high clutch drum) at the location as shown.
CAUTION:
Block the oil hole (A) on the opposite side with lint-free
cloth (B).
b. Check to see that retaining plate moves to snap ring.
c. If retaining plate does not contact snap ring: • High clutch piston seal might be damaged.Specified clearance
Standard and allowable limit: Refer to AT-375, " Clutches and Brakes " .

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b. Apply compressed air into oil hole of bearing retainer at the loca-
tion as shown.
c. Check to see that retaining plate moves to snap ring.
d. If retaining plate does not contact snap ring: • D-ring might be damaged.
• Seal lip might be damaged.
• Fluid might be leaking past piston check ball.
2. Check operation of overrun clutch.
a. Install seal rings to bearing retainer, and set forward clutch drum.
b. Apply compressed air into oil hole of bearing retainer at the loca- tion as shown.
c. Check to see that retaining plate moves to snap ring.
d. If retaining plate does not contact snap ring: • D-ring might be damaged.
• Seal lip might be damaged.
• Fluid might be leaking past piston check ball.
3. Remove snap ring for forward clutch from forward clutch drum using a flat-bladed screwdriver.
4. Remove retaining plate, drive plates, driven plates and dish plate for forward clutch.
5. Remove snap ring for overrun clutch from forward clutch drum using a flat-bladed screwdriver.
6. Remove retaining plate, drive plates, driven plates and dish plate for overrun clutch. SAT202D

REPAIR FOR COMPONENT PARTS
AT-309
< SERVICE INFORMATION >
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• Check facing for burns, cracks or
damage. Replace if necessary.
• Measure thickness of facing.
CAUTION:
• Measure the thickness at 3 lo cations and find the average.
• Inspect all drive plates.
• Replace if the thickness is below the allowable limit.
Forward Clutch and Overrun Clutch Dish Plates • Check for deformation or damage.
• Measure thickness (t) of dish plate. Replace if damaged, deformed or worn.
Forward Clutch and Overrun Clutch Spring Retainer Assembly Check length (L) of spring retainer assembly. Replace if damaged,
deformed or worn.
CAUTION:
Do not remove return springs (A) from spring retainer (B)
Forward Clutch Drum • Make sure that check balls are not fixed.
• Apply compressed air to check ball oil hole from outside of forward
clutch drum. Make sure air leaks past ball.
• Apply compressed air to oil hole from inside of forward clutch drum. Make sure there is no air leakage.
Overrun Clutch Piston Thickness of drive plate
Forward clutch Standard and allowable limit:
Refer to AT-375, " Clutches and Brakes " .
Overrun clutch Standard and allowable limit:
Refer to AT-375, " Clutches and Brakes " . SAT162D
Thickness of dish plate (t)
Forward clutch : 2.5 mm (0.098 in)
Overrun clutch : 2.15 mm (0.0846 in) SCIA8008E
Length (L) : 27.7 mm (1.091 in)
SCIA7025J
SAT213D

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Low & Reverse Brake
INFOID:0000000004305523
COMPONENTS
DISASSEMBLY 1. Check operation of low & reverse brake.
a. Apply compressed air into oil hole of transaxle case at the loca- tion as shown.
b. Check to see that retaining plate moves to snap ring.
c. If retaining plate does not contact snap ring: • D-ring might be damaged.
• Seal lip might be damaged.
2. Remove snap ring (1) using a suitable tool (A).
3. Remove retaining plates, drive plates, driven plates, dish plates. 1. Seal lip 2. D-ring 3. Low & reverse brake piston
4. Spring retainer assembly 5. Snap ring 6. Driven plate
7. Retaining plate 8. Driven plate 9. Retaining plate
10. Snap ring 11. Drive plate 12. Dish plate