NISSAN TEANA 2003 Service Manual

REPAIR FOR COMPONENT PARTS
AT-283
D
E
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AT

9. Remove control valve inter body from control valve upper body.
10. Check to see that steel balls are properly positioned in control
valve inter body and then remove them.
CAUTION:
Be careful not to lose steel balls.
11. Remove pilot filter from control valve upper body.
12. Remove separating plate from control valve upper body.
13. Check to see that steel balls are properly positioned in control
valve upper body and then remove them.
CAUTION:
Be careful not to lose steel balls.
INSPECTION
Control Valve Lower and Upper Bodies
CAUTION:
Be careful not to lose these parts.

Check to see that retainer plates are properly positioned in con-
trol valve lower body.
SCIA4977E
SCIA3642E
SCIA3643E
SCIA4978E

AT-284
REPAIR FOR COMPONENT PARTS


Check to see that retainer plates are properly positioned in con-
trol valve upper body.
Oil Strainer
Check wire netting of oil strainer for damage. Replace if necessary.
Shift Solenoid Valves “A” and “B”, Line Pressure Solenoid Valve, Torque Converter Clutch
Solenoid Valve and Overrun Clutch Solenoid Valve
Measure resistance.
A/T Fluid Temperature Sensor
Measure resistance.
SCIA4979E
SCIA3291E
Item TerminalResistance
(Approx.)
Shift solenoid valve A 2 Ground 20 - 30 Ω
Shift solenoid valve B 1 Ground 5 - 20Ω
Line pressure solenoid valve 4 Ground 2.5 - 5.0Ω
Torque converter clutch
solenoid valve5Ground5 - 20Ω
Overrun clutch solenoid
valve3 Ground 20 - 30Ω
SCIA7532E
Item Terminal Temperature°C (°F)Resistance
(Approx.)
A/T fluid tem-
perature sensor6 - 720 (68) 2.5 kΩ
80 (176) 0.3 kΩ
SCIA7533E

REPAIR FOR COMPONENT PARTS
AT-285
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Oil Cooler Relief Valve Springs

Check each spring for damage or deformation. Also measure
free length and outer diameter. Refer to AT- 3 6 4 , "
Control
Va l v e s" .

Replace springs if deformed or fatigued.
ASSEMBLY
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.
Using reamer bolts f as guides, install separating plate as a set.
c. Install pilot filter to control valve upper body.
SAT138D
SCIA3643E
SCIA4980E
SAT074F

AT-286
REPAIR FOR COMPONENT PARTS

d. Place control valve inter body as shown in figure (side of control
valve lower body face up). Install steel balls in their proper posi-
tions.
e. Install control valve inter body on control valve upper body using
reamer bolts f as guides.
CAUTION:
Be careful not to dislocate or drop steel balls.
f. Install check balls and oil cooler relief valve springs in their
proper positions in control valve lower body.
g. Install bolts e from bottom of control valve lower body. Using
bolts e as guides, install separating plate as a set.
h. Install support plates on control valve lower body.
i. Install control valve lower body on control valve inter body using
reamer bolts f as guides, and tighten reamer bolts f slightly.
SCIA3642E
SCIA4981E
SCIA4885E
SCIA7820E
SCIA7821E

REPAIR FOR COMPONENT PARTS
AT-287
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2. Install O-rings (1) to solenoid valves and terminal body.
3. Install and tighten bolts.
Bolt length, number and location:
f: Reamer bolt and nut.
a. Install and tighten bolts b and nut f to specified torque.
SCIA7819E
Bolt symbolabcde f g
Bolt length “ ” mm (in)
13.5
(0.531)58.0
(2.283) 40.0
(1.575)66.0
(2.598)33.0
(1.299)78.0
(3.071)18.0
(0.709)
Number of bolts 6 3 6 11 2 2 1
Tightening torque
N·m (kg-m, in-lb)7.8 (0.80, 69)4.0
(0.41, 35)7.8 (0.80, 69)
SCIA4974E
: 7.8 N·m (0.80 kg-m, 69 in-lb)
SCIA4437E

AT-288
REPAIR FOR COMPONENT PARTS

b. Install solenoid valve assembly and line pressure solenoid valve
to control valve assembly.
c. Tighten bolts a , c and g to specified torque.
d. Set oil strainer, then tighten bolts a , d and nut f to specified
torque.
e. Tighten bolts e to specified torque. : 7.8 N·m (0.80 kg-m, 69 in-lb)
SCIA4438E
: 7.8 N·m (0.80 kg-m, 69 in-lb)
SCIA3484E
: 4.0 N·m (0.41 kg-m, 35 in-lb)
SCIA3487E

REPAIR FOR COMPONENT PARTS
AT-289
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Control Valve Upper BodyBCS001OM
COMPONENTS
SCIA2960J

AT-290
REPAIR FOR COMPONENT PARTS

DISASSEMBLY
1. Remove valves at retainer plates.
CAUTION:
Do not use a magnetic pick-up tool.
a. Use a screwdriver to remove retainer plates.
b. Remove retainer plates while holding spring, plugs or sleeves.
CAUTION:
Remove plugs slowly to prevent internal parts from jumping
out.
1. Retainer plate 2. Plug 3. Cooler check valve spring
4. Cooler check valve 5. Control valve upper body 6. Pilot valve
7. Pilot valve spring 8. Retainer plate 9. 1-2 accumulator retainer plate
10. 1-2 accumulator piston spring 11. 1-2 accumulator piston 12. Plug
13. Retainer plate 14. Retainer plate 15. Plug
16. 1st reducing valve 17. 1st reducing valve spring 18. Retainer plate
19. 3-2 timing valve spring 20. 3-2 timing valve 21. Retainer plate
22. Plug 23. Overrun clutch reducing valve 24. Overrun clutch reducing valve spring
25. Retainer plate 26. Torque converter relief valve spring 27. Torque converter relief valve
28. Retainer plate 29. Sleeve 30. Plug
31. Torque converter clutch control valve
spring32. Torque converter clutch control
valve33. Retainer plate
34. Plug 35. 1-2 accumulator valve spring 36. 1-2 accumulator valve
SCIA4979E
SAT553G
SAT554G

REPAIR FOR COMPONENT PARTS
AT-291
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c. Place mating surface of valve body face down, and remove
internal parts.
CAUTION:

If a valve is hard to remove, place valve body face down
and lightly tap it with a soft hammer.

Be careful not to drop or damage valves and sleeves.
INSPECTION
Valve Springs

Measure free length and outer diameter of each valve spring.
Also check for damage or deformation. Refer to AT- 3 6 4 , "
Con-
trol Valves" .

Replace valve springs if deformed or fatigued.
Control Valves
Check sliding surfaces of valves, sleeves and plugs. Replace if necessary.
ASSEMBLY
CAUTION:

Apply ATF to all components before installation.

Lay control valve body down when installing valves. Do not
stand control valve body upright.

Lubricate control valve body and all valves with ATF. Install con-
trol valves by sliding them carefully into their bores.
CAUTION:

Install each control valve one by one.

Install control valves after checking, because some of
them are similar.

Be careful not to scratch or damage valve body.
SAT137D
SAT138D
SAT139D
SAT140DA

AT-292
REPAIR FOR COMPONENT PARTS

–Wrap a small screwdriver with vinyl tape and use it to insert
valves into their proper positions.
1-2 Accumulator Valve

Install 1-2 accumulator valve (1). Align 1-2 accumulator retainer
plate (2) from opposite side of control valve body.

Install 1-2 accumulator piston spring (3), 1-2 accumulator piston
(4), plug (5) and retainer plate (6).

Install retainer plates.
–While pushing plug or spring, install retainer plate.
Retainer Plate (Control Valve Upper Body)
Install proper retainer plates. Refer to AT- 2 8 9 , "COMPONENTS" .
Unit: mm (in)
SAT141D
SCIA7182E
SAT143D
Loca
tionName of control valve Width A Length B
L14 Pilot valve
6.0 (0.236)21.5 (0.846) L16 1st reducing valve
L17 3-2 timing valve
L19 Torque converter relief valve
L151-2 accumulator valve
40.5 (1.594)
1-2 accumulator piston
L18 Overrun clutch reducing valve
24.0 (0.945)
L21 Cooler check valve
L20 Torque converter clutch control valve 28.0 (1.102)
SAT086F