CONDITION POSSIBLE CAUSES CORRECTION
NO UPSHIFT OF 1ST
GEAR AT TIMES
1. Connector Ballast Unit. Output
Speed Sensor Loose, Incorrectly
Contacted.
1. Check Connectors, Replace
Output Speed sensor If Neces-
sary.
2. Output Speed Sensor Defective 2. Replace Output Speed Sen-
sor.
LEAKAGE AT THE AREA
OF THE ELECTRICAL
PLUG TO THE CONDUC-
TOR PLATE
1. Deformation O-Rings. 1. Replace O-Rings.
2. Deformation Adapter. 2.Replace Adaptor.
3. The Conductor Plate Is Not Fitted
Surface To Surface On The Valve
Body In One Corner, The Plug Is
Not Centered In The Socket And
The O-ring Will Not Seal.
3. Remove Nose Of Conductor
Plate.
4. Contacting At The Conductor
Plate Leaky. Oil In Harness, Some-
times In The Control Module.
4. Replace Conductor Plate.
LEAKAGE AT THE AREA
OF BELL HOUSING/
TORQUE CONVERTER
1. Bolts (Torx M6) Outer Disc Carri-
er B1.
1. Clean Thread and Install the
Bolts Using Sealer.
OIL LEAKS 1. 6 Lower Bolts (TorxM8) Converter
Housing.
1. Clean Thread and Install the
Bolts Using Sealer.
2. Oil Drain Plug Converter Loose
Resp. No Seal Ring Installed.
2. Install Drain Plug Correctly.
3. Weld Seam Of Torque Converter
Leaky.
3. Replace Torque Converter.
4. Radial Sealing Ring Oil Pump
Defective.
4. Replace Sealing Ring.
5. O-Ring Oil Pump Defective Or
Not Installed.
5. Install O-Ring.
6. Bushing Of Oil Pump Loose,
caused By Missing Fit Bolt At
Transmission/Engine Flange.
6. Install Fit Bolt If Necessary.
STANDARD PROCEDURE - ALUMINUM
THREAD REPAIR
Dama ged or worn t hrea ds in the aluminum tra ns-
mission case and valve body can be repaired by the
use of Heli-Coils™, or equivalent. This repair con-
sists of drilling ou t the wor n-out da maged threads.
Then tap the hole with a special Heli-Coil™ tap, or
equivalent , and i n st alling a Heli-Coil™ in sert, or
equivalent , int o th e hole. This brings the hole back to
its original thr ead size.
Heli-Coil™, or equivalent, tools an d inser ts ar e
readily available from m ost autom otive parts suppli-
er s.
REMOVAL
(1) Disconn ect th e negative (ground) bat tery cable.
CAUTION: Isolate ground lead to prevent accidental
contact.
(2) Apply par king brake.
(3) Move gear selector lever to position “N”.
(4) Remove oil dr ain plug (2) (F ig. 26) a nd drain
automatic tr ansmission oil in to a clea n container.
21 - 42 AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION VA
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