Nissan Sentra Service Manual: Oil seal
Valve oil seal : Removal and Installation
REMOVAL
- Rotate crankshaft, and set piston whose valve oil seal is to be removed
to TDC. This will prevent valve
from dropping into cylinder.
CAUTION:
When rotating crankshaft, be careful to avoid scarring front cover with
timing chain.
- Remove camshafts. Refer to EM-60, "Exploded View".
- Remove valve lifters. Refer to EM-60, "Exploded View".
- Remove valve collet, valve spring retainer, and valve spring
using Tools
Tool number (A) : KV1016200 (J-26336-A)
Tool number (B) : KV10109220 ( — )
Tool number (C) : KV10115900 (J-26336-20)

CAUTION:
- Do not damage valve lifter holes.
- Install Tool (A) in the center of valve spring retainer to
press it.
(1) : Valve spring retainer
(A) : Attachment
Tool number : KV10115900 (J-26336-20)

- Remove valve spring retainer and valve spring (with valve spring seat).
CAUTION:
Do not remove valve spring seat from valve spring.
- Remove valve oil seal using Tool (A).
Tool number : KV10107902 (J-38959)

INSTALLATION
- Apply new engine oil to valve oil seal joint surface and seal lip.
- Press in valve oil seal to the height (H) shown using Tool (A).
Height (H) : 15.1 - 15.7 mm (0.594 - 0.618 in)
Tool number : KV10115600 (J-38958)

- Installation of remaining components is in the reverse order of removal.
Front oil seal : Removal and Installation
REMOVAL
- Remove front fender protector (RH). Refer to EXT-27, "FENDER PROTECTOR :
Exploded View".
- Remove drive belt. Refer to EM-15, "Exploded View".
- Remove crankshaft pulley. Refer to EM-48, "Exploded View".
- Remove front oil seal using suitable tool.
CAUTION:
Do not damage front cover and crankshaft.
INSTALLATION
- Apply new engine oil to new front oil seal joint surface and seal lip.
- Install front oil seal so that each seal lip is oriented as shown.
(A) : Dust seal lip
(B) : Oil seal lip

- Press-fit front oil seal using a suitable tool with outer diameter 57 mm
(2.24 in) and inner diameter 45
mm (1.77 in).
Within 0.3 mm (0.012 in) toward engine front (crankshaft
pulley side)
Within 0.5 mm (0.020 in) toward engine rear (crankshaft
sprocket side)
CAUTION:
- Be careful not to damage front cover and crankshaft.
- Press-fit oil seal straight to avoid causing burrs or tilting.
- Installation of remaining components is in the reverse order of removal.
Rear oil seal : Removal and Installation
REMOVAL
- Remove engine and transaxle assembly. Refer to EM-86, "CVT : Exploded
View" (CVT models) or TM-28,
"Exploded View" (M/T models).
- Remove clutch cover and clutch disc (M/T models). Refer to CL-17, "Exploded
View".
- Remove drive plate (CVT models) or flywheel (M/T models). Refer to
EM-94, "Exploded View".
- Remove rear oil seal using suitable tool.
CAUTION:
Do not damage crankshaft and cylinder block.
INSTALLATION
- Apply the liquid gasket lightly to entire outside area of new rear oil
seal.
Use Genuine Silicone RTV Sealant, or equivalent. Refer to GI-21, "Recommended
Chemical Products
and Sealants".
- Install rear oil seal so that each seal lip is oriented as shown.
(A) : Dust seal lip
(B) : Oil seal lip

- Press-fit rear oil seal using suitable tool (A) with outer diameter
115 mm (4.53 in) and inner diameter 90 mm (3.54 in).
CAUTION:
- Do not damage crankshaft and cylinder block.
- Press-fit oil seal straight to avoid causing burrs or tilting.
- Do not touch grease applied onto oil seal lip.

- Press in rear oil seal (1) to the position as shown.
(A) : Rear end surface of cylinder block

- Installation of the remaining components is in the reverse order of
removal
Exploded View
Camshaft position sensor (EXH)
O-ring
Camshaft bracket
Camshaft (EXH)
Camshaft sprocket (EXH)
Camshaft sprocket (INT)
Camshaft (INT)
Valve lifter (EXH)
Valve lif ...
Exploded View
Cylinder head assembly
Cylinder head bolt
Cylinder head gasket
Refer to INSTALLATION
Removal and Installation
REMOVAL
Release fuel pressure. Refer to EC-143, ...
Other materials:
C1115 ABS Sensor [abnormal signal]
DTC Logic
DTC DETECTION LOGIC
DTC
Display Item
Malfunction detected condition
Possible causes
C1115
ABS SENSOR
[ABNORMAL SIGNAL]
When difference in wheel speed between any wheel
and others is detected while the vehicle is driven, because
of installation of t ...
S connector circuit
Description
The starter motor magnetic switch is supplied with power when the ignition
switch is turned to the START position
while the selector lever is in the P (Park) or N (Neutral) position (CVT Models)
or the clutch pedal is
depressed (M/T Models).
Diagnosis Procedure
Regarding Wiring ...
Doors
When the doors are locked using one of the
following methods, the doors cannot be opened
using the inside or outside door handles. The
doors must be unlocked to open the doors.
WARNING
Always have the doors locked while
driving. Along with the use of seat belts,
this provides ...
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