Control Valve

Clean upper body, control valves and springs with cleaning agent, and dry compressed air.
Dip control valves in ATF, and apply ATF to the valve-mounting area of upper body.

Fig 1: Installing Control Valve, Spring, And Plug To Upper Body
Courtesy of NISSAN MOTOR CO., U.S.A.
Install each control valve, spring, and plug to upper body, and install retainer plates to hold them in place.
CAUTION:
- To insert control valves into upper body, place upper body on a level surface in order to prevent flaw or damage.
- Make sure each control valve is smoothly inserted.
  
  Fig 2: Making Sure Each Control Valve Is Smoothly Inserted
  Courtesy of NISSAN MOTOR CO., U.S.A.
Install reverse balls, relief balls and relief springs, accumulator pistons and valve springs to upper body.

Fig 3: Installing Reverse Balls, Relief Balls And Relief Springs, Accumulator Pistons And Valve Springs

Courtesy of NISSAN MOTOR CO., U.S.A.

Install lower body and separator plate to upper body.

Fig 4: Installing Lower Body And Separator Plate To Upper Body
Courtesy of NISSAN MOTOR CO., U.S.A.

NOTE: Do not reuse separator plates.
With lower body down, tighten two bolts in the position shown.
Apply ATF or petroleum jelly to new O-ring, and install it to 2-4WD shift solenoid valve, line pressure switch and 4WD solenoid valve. Install them to control valve assembly.
NOTE: Do not reuse O-rings.

Fig 5: Tightening Bolts

Courtesy of NISSAN MOTOR CO., U.S.A.

Apply ATF or petroleum jelly to lip seals, and install them to center case.
CAUTION: There are 2 kinds of lip seals (lip seal of large inner diameter: 5 pieces, lip seal of small inner diameter: 2 pieces). Confirm their position for installation.

NOTE: Do not reuse lip seals.

Fig 6: Installing Lip Seals To Center Case
Courtesy of NISSAN MOTOR CO., U.S.A.
Install the other 13 bolts and tighten them to specified torque.
Control valve case bolts :7.9 N.m (0.81 mm, 70 in-lb)

Fig 7: Installing Bolts
Courtesy of NISSAN MOTOR CO., U.S.A.
Install control valve assembly to center case, and tighten bolts.
Control valve bolts :7.9 N.m (0.81 kg-m, 70 in-lb)

Fig 8: Installing Control Valve Assembly To Center Case
Courtesy of NISSAN MOTOR CO., U.S.A.
Install connector assembly into center case installation hole, and secure terminal body with snap ring.

Fig 9: Installing Connector Assembly Into Center Case Installation Hole
Courtesy of NISSAN MOTOR CO., U.S.A.
Apply ATF or petroleum jelly to new O-rings, and install them on oil strainer.
NOTE: Do not reuse O-rings.
Install oil strainer to control valve assembly.

Fig 10: Installing Oil Strainer To Control Valve Assembly

Courtesy of NISSAN MOTOR CO., U.S.A.