timing belt NISSAN PULSAR 1987 User Guide

56 Engine

Checking the oil pump rotor end float.
with a feeler gauge. Renew the oil pump if this
clearance exceeds the Specifications.

(5) Check the cover plate for wear and scoring
and renew as necessary. (6) Check the relief valve plunger and spring for
wear or damage. Renew any faulty components as
necessary.
TO ASSEMBLE AND INSTAL

Assembly is a reversal of the dismantling proce-
dure with attention to the following points:

(1) Liberally lubricate all components with clean
engine oil before assembly. (2) Install the relief valve plunger and spring into
the pump housing and install the relief valve
plug
using a new sealing washer. Tighten the plug securely. (3) Install the outer rotor into the pump housing with the F mark on the rotor facing towards the cover
plate, if applicable. Install the inner rotor ensuring that
it is correctly meshed with the teeth of the outer rotor.

(4)
Install the cover plate to the oil pump housing
and tighten the retaining screws to the specified
torque. (5) Install a new oil seal to the front of the oil
pump housing. Ensure that the lip of the oil seal faces
the inside of the oil pump housing. (6) If necessary, install the oil pressure gauge
sender unit.
(7) Turn the inner rotor in the oil pump housing.
Ensure that the oil pump rotates freely. (8) Ensure that the mating surfaces of the oil
pump and cylinder block are thoroughly clean. Coat
the oil pump gasket with an oil resistant sealer and
install the oil pump and gasket to the cylinder block. It
may be necessary to turn the oil pump slightly to align
the inner rotor and crankshaft. Tighten the retaining
bolts to the specified torque.
NOTE: Ensure that the oil seal installed to
the oil pump is not damaged when the oil
pump is positioned on the crankshaft.

(9) Install the camshaft drive belt inner cover.
(10) Install the water pump using a new O ring.
Coat the water pump and the engine block mating
surfaces with Dow Corning silicone grease or equiva-
lent. Do not fully tighten the water pump retaining
bolls at this stage. (11) Install the camshaft timing gear and tighten
the retaining bolt to the specified torque.
(12) Install the crankshaft timing gear spacer, key
and timing gear to the crankshaft. (13) Using a new crankshaft timing gear retaining
bolt, install the spacer and tighten the retaining bolt to
the specified torque. (14) Ensure that the oil pump pickup pipe and
screen are clean and free of foreign material. Install a
new O ring to the pipe and position the pickup pipe
and screen in position on the oil pump. Coat the
threads of the mounting bolts with Loctite 242 and
torque the bolts to the specified torque. (15) Fill a new oil filter with the correct grade of
engine oil and install the oil filter. (16) Install the sump as previously described.
(17) Install and adjust the camshaft drive belt as
described under the Camshaft Drive Belt heading. (18) Fill the engine with the correct grade and
quantity of oil. Refer to the Lubrication and Mainte-
nance section.
(19) Fill the cooling system as described in the
Cooling and Heating Systems section. (20) Start and run the engine and check for oil
and coolant leaks. (21) Install the engine splash guard to the
inner
right hand mudguard. (22) Install the right hand wheel and tighten the
wheel nuts as much as possible.
Checking the oil pump inner to outer rotor teeth
backlash.

Engine
edge of the bearing cap to cylinder block joint. Install
the bearing cap bolts and tighten to the specified
torque.

(17) Lubricate the l i p of the new oil seal with
lithium grease and carefully install the seal into
position over the crankshaft . Insert the seal as far as
possible using finger pressure and then fully install the
sea! using a tubular drift. Ensure that the seal is not
damaged during installation and that the seal is
mounted square to the block face.
(18) Install the remainder of the engine
compo-
nents by referring to the relevant headings in
this
section.
TO RENEW CRANKSHAFT OIL SEALS

Front
(1) Remove the camshaft drive belt as previ-
ously described.
(2) Disconnect the lower radiator hose and drain
the cooling system. (3) Select fifth gear on manual transaxle models
and firmly apply the handbrake. (4) On automatic transaxle models, remove the
torque converter inspection cover to allow access to
the ring gear. Have an assi stant hold the ring gear
using a suitable lever. (5) Remove the crankshaft timing gear retaining
bolt and discard. (6) Remove the crankshaft timing gear from the
crankshaft. It may be necessary to lever the gear from
the crankshaft using two screwdrivers. Remove the
key and spacer from the crankshaft. (7) Using a centre punch, tap a small hole in the
front face of the oil seal. (8) Insert a self tapping screw into the hole.
(9) Remove the seal from the oil pump by
gripping and pulling the end of the screw with a pair
of pliers. (10) Coat the l i p of a new seal with multi-purpose
grease. (11) Install the oil seal to the oil pump using a
tubular drift. Ensure that the lip of the oil seal faces
the inside of the housing.
(12) Install the remaining components in the re-
verse order of removal, usi ng a new crankshaft timing
gear retaining bolt and referring to the relevant
headings in this section as necessary.
Rear

(1) Remove the automatic transaxle or manual
transaxle as described in the appropriate section. (2) Remove the flywheel/drive plate as described
under the following heading. (3) Lever the oil seal from the rear of the
crankcase being careful not to damage the crankshaft.
(4) Coat the lip of a new seal with Lithium
grease.
(5) Install the oil seal over the crankshaft. Ensure
that the li p of the oil sea l faces towards the engine.
(6) Insert the seal as far as possible using finger
pressure, and then fully seat the seal using a tubular
drift. (7) Install the remaining components in the
re-
verse order of removal, referring to the relevant
headings in this section as necessary.
12. FLYWHEEL/DRIVE PLATE

Special Equipment Required:
To Renew Ring Gear — Suitable heat source
TO REMOVE
(1) Remove the transaxle from the vehicle as
described in the Manual or Automatic Transaxle
sections, whichever is applicable. (2) On manual transaxle models, mark the fly-
wheel and the clutch pressure plate cover to ensure
correct assembly.
View of the drive plate and retaining bolts.
Progressively loosen and remove the pressure
plate retaining bolts.

Using a dial gauge, check the runout of the clutch
face contacting surface of the flywheel. If the runout
exceeds 0.3 mm have the flywheel face surfaced by a
clutch specialist or authorized dealer.

(3) Suitably mark the flywheel or drive plate so
that the unit can be installed in the original position
on the crankshaft. Remove the retaining bolts. (4) Lift the flywheel or drive plate from the
engine.
TO CHECK AND INSPECT

Inspect the clutch face contacting surface of the
flywheel for cracks or excessive scoring.

(2) Inspect the ring gear teeth for damage, cracks
or wear. The ring gear on manual transaxle models
can be renewed separately from the flywheel, but on

Fuel and Engine Management 91
components, erase the self diagnosis memory as
described under the following heading.

(7) Repeat the self diagnosis test procedure and
ensure that code 12 is displayed.

To Erase Memory
(1) With the ignition Off, remove the fusible link
that is positioned third from the front of the fusible
link connecting block located at the rear of the
battery. (2) Install the fusible link after 10 seconds.

View showing the location of the fusible links.
TO CHECK AND ADJUST IGNITION TIMING
(1) Connect a timing light to the engine as
previously described under the Service Precautions
and Procedures heading.
(2) Start the engine and allow it to reach normal
operating temperature. (3) Connect a jumper lead between terminals A
and B on the diagnostic link connector. (4) With the engine idling at the specified speed,
check the ignition timing with the timing light.
The timing mark on the crankshaft pulley should
be aligned with the pointer on the inner liming belt
cover.

(5) If necessary, loosen the distributor body
retaining nuts and turn the distributor until the timing
marks are aligned. (6) Tighten the distributor body retaining nuts
and check that the timing is correct. (7) Remove the jumper lead from the diagnostic
link connector and disconnect the timing light from
the engine.
TO ADJUST BASE IDLE SPEED

NOTE: The idle speed is controlled by the
idle air control (IAC) valve and is not

adjustable. The throttle stop screw controls
the base idle speed a nd is factory set. The
following base idle speed adjustment should
only be performed if the throttle body has
been renewed, or if comprehensive testing of
related components indicates that adjust-
ment is required.

(1) Before adjusting the base idle speed perform
the following tests;

(a) Check the spark plug gaps, the high tension
leads and the ignition timin g as described previously
in the Engine Tune-up section.
(b) Check the air inlet syst em for leaks between
the throttle body and inlet manifold and the inlet
manifold and cylinder head.
NOTE; Any vacuum leaks will make the
engine idle faster than it should.

(c) Check that all wiring connectors and vacuum
hoses are securely connected. (d) Ensure that the transaxle is in Park or
Neutral. (e) Ensure that the air cleaner element is service-
able.

(2) On 1.6 liter engines, remove the air cleaner
assembly, disconnect the vacuum hose from the
throttle body and seal the vacuum hose fitting.
(3) Ensure that the throttle valve moves freely
and returns to the fully closed position when slowly
released. (4) Connect an accurate tachometer to the en-
gine as previously descri bed under the Service Pre-
cautions and Procedures heading.
(5) Start the engine and allow the engine to
warm up and the idle rpm to stabilize. Check that all
electrical accessories and the air conditioning, if
equipped, are turned off. (6) With the engine idling in Park or Neutral,
slowly disconnect the brake servo unit vacuum supply
hose from the inlet manifold. Allow the engine to run
for one minute.
Location of the base idle adjusting screw. 1.8 liter
engine.