1987 NISSAN PULSAR ECU

134 Manual Transaxle and Drive Shafts
(32) Install and tighten the retaining bolts to
the specified torque.
(33) Repeat operation (29). The total turning
torque should be 5.9-13.7 Nm if new bearings have
been installed or slightly l ess if the original bearings
have been installed. If the turning torque is no t as specified, adjust the
mainshaft turning torque as follows:

(a) Remove the transaxle case rear cover, O ring,
spacer and adjusting shim from the transaxle case.
(b) Ensure that the mainsh aft rear bearing outer
race is fully seated on the bearing cone. (c) Using micrometer depth gauge, measure the
distance from the transaxle case to the bearing outer
race and note the reading. (d) Referring to the following table, select the
appropriate shim, according to the reading noted in
operation (c), required to correct the mainshaft turn-
ing torque.
READING SHIM

2.35-2.40 mm............................................... 0.10 mm
2.40-2.45 mm............................................... 0.15 mm
2.45-2.50 mm...............................................0.20 mm
2.50-2.55 mm...............................................0.25 mm
2.55-2.60 mm...............................................0.30 mm
2.60-2.65 mm............................................... 0.35 mm
2.65-2.70 mm............................................... 0.40 mm
2.70-2.75 mm............................................... 0.45 mm
2.75-2.80 mm............................................... 0.50 mm
2.80-2.85 mm............................................... 0.55 mm
2.85-2.90 mm............................................... 0.60 mm
2.90-2.95 mm............................................... 0.65 mm
2.95-3.00 mm............................................... 0.70 mm
3.00-3.05 mm............................................... 0.75 mm
3.05-3.10 mm............................................... 0.80 mm
3.10-3.15 mm............................................... 0.85 mm
3.15-3.20 mm............................................... 0.90 mm
3.20-3.25 mm............................................... 0.95 mm
3.25-3.30 mm...............................................1.00 mm.
(e) Install the spacer, shim, O ring and rear
cover to the transaxle case. Tighten the retaining
bolts securely.

(34) Measure the total turning torque as previ-
ously described. (35) Install the striking interlock and striking lever
to the clutch housing. (36) Install the striking ro d to the clutch housing
sliding the rod through the lever and interlock. Take
care that the end of the rod does not damage the seal. (37) Install a new retaining pin to the striking rod
using a pin punch. (38) Install the reverse and fifth gear check
assembly to the clutch housing. Tighten the retaining
screws securely. (39) Install the balls, spring and reverse check
plug to the clutch housing ensuring that the smaller
diameter ball enters the hole in the body of the
reverse and fifth gear check assembly body. Apply locking com-
pound and tighten the reverse check plug securely.

(40) Using a bar clamped to the end of the
striking rod, check that a force of 4.9-7.4 Nm is
required to overcome the spring loading of the reverse
and fifth gear check assembly. If necessary, renew the
springs to achieve this correct spring loading.

NOTE: Ensure that the reverse check plug is
coated with locking compound when finally
installed.

(41) Install the shift check ball, spring and plug to
the clutch housing. Ensure that the ball is centrally
located in the plug.
(42) If removed, install the oil reservoir to the
clutch housing.
(43) Install the input shaft assembly and the
reverse idler gear to the clutch housing taking care not
to damage the seal.
(44) Apply locking compound to the bearing
retainer bolts and tighten the bolts to the specified
torque.
(45) Install the spacer to the reverse idler shaft.
(46) Install the differential assembly to the clutch
housing.
(47) Install the mainshaft to the clutch housing
ensuring that the resin oil ch annel is located centrally
in the end of the mainshaft. (48) Install the shift cap to the slot in the first/
second shift fork and install the shift fork and control
bracket to the clutch housing. Use grease to hold the
shift cap in the shift fork slot. Ensure that the reverse
idler shift fork is correctly located over the gear.
(49) Apply locking compound to the threads of
the control bracket retaining bolts and tighten the
bolts to the specified torque. (50) Install the shift cap in the slot in the third/
fourth shift fork and install the fork to the transaxle
assembly. Use grease to hold the shift cap in the shift
fork slot. (51) Install the fifth gear shift fork to the transaxle
ensuring that the shift fork slot engages the control
finger.
(52) Install the fork shaft an d spring to the clutch
housing sliding the shaft through the shift forks. Use
grease to hold the spring in the end of the shaft. (53) Apply a continuous bead of sealant to the
mating face of the clutch housing so that the bead is
located inside the row of bolt holes.
NOTE: Sealant is available from Nissan
spare parts using the part number KP
610-00250.

(54) Install the transaxle case to the clutch hous-
ing. Install and tighten the retaining bolts to the
specified torque. (55) Select each gear in turn and check that the
transaxle turns freely in each gear. Ensure that it is not

Manual Transaxle and Drive Shafts 135
possible to move the striking rod from fifth gear to
reverse without first moving sideways in the neutral
gate.
4. DIFFERENTIAL AND FINAL DRIVE ASSEMBLY
Special Equipment Required:
To Measure Differential Turning Torque —
Suitable slotted adaptor and torque gauge
TO CHECK VISCOUS COUPLING
From July 1989, Manual transaxle Pulsar Q and
Vector SSS models are equipped with a limited slip
differential incorporating a viscous coupling.

(1) Raise the front of the vehicle and support it
on chassis stands. (2) Rotate one front wheel and check the rota-
tional direction of the opposite wheel. (3) If both front wheels rotate in the same
direction, the viscous coupling is functioning nor-
mally. (4) If the front wheels rota te in opposite direc-
tions, the viscous coupling is unserviceable and must
be renewed as an assembly.
TO DISMANTLE AND ASSEMBLE

It is necessary to remove and dismantle the
transaxle assembly to gain access to the differential
and final drive assembly.

Refer to the Transaxle Assembly heading for the
removal of the transaxle from the vehicle. Operations
1-9 of the dismantling procedure under the same
heading describe the removal of the differential and
final drive assembly from the transaxle.

(1) If necessary, cut and remove the speedome-
ter drive gear from the differential case. (2) Using a suitable puller, remove the differen-
tial carrier bearing cone and roller assemblies from the
differential case and remove the speedometer drive
gear stopper.
(3) Remove the ring gear retaining bolts and
separate the ring gear from the differential case using
a soft faced hammer.
(4) Using a pin punch, remove the retaining pin
from the differential pinion shaft.
(5) Remove the pinion shaft from the differen-
tial case. (6) Remove the pinion gears and thrust washers
from the differential case. (7) Remove the side gears and spacers from the
differential case.
NOTE: If applicable, the viscous coupling is
integral with the left hand side gear.

(8) Wash all the differential components with
cleaning solvent. (9) Check the gears, spacer s, thrust washers,
pinion shaft and differential case for wear, pitting and
damage. Renew parts as necessary.
(10) Install the side gears and spacers to
the
differential case.
(11) Install the pinion gear s and thrust washers
to
the differential case.
(12) Install the pinion shaft to the differential case
aligning the retaining pin hole. (13) Install the retaining pin to the pinion shaft
until the end of the pin is level with the differential
case. (14) With a dial gauge contacting the end of the
side gear, lift the side gear evenly and measure the
clearance between the side gear and the differential
case. The clearance should be 0.1-0.2 mm.
NOTE: Do not tilt the side gear or the dial
gauge reading will be incorrect.

(15) If necessary, adjust the side gear clearance
using selective fit spacers.

NOTE: Spacers are available from 0.15 mm
to 1.00 mm in increments of 0.05 mm.

(16) Measure and if necessary, adjust the other
side gear clearance. (17) On models equipped with a viscous cou-
pling, adjust the side gear clearance as follows:
(a) Temporarily secure the differential case with
two bolts. (b) Position the differential case so that the right
hand side gear is uppermost. (c) Insert a 0.03 mm feeler gauge between the
View of the differential ass embly removed from the
transaxle.

Manual Transaxle and Drive Shafts 137


Dismantled view of the gear lever assembly.
(7) Remove the bushes, spacer and O rings from
the bottom of the gear lever.
(8) Remove the nuts retaining the floor bracket
to the vehicle floor panel and remove the bracket from
the vehicle. (9) If necessary, disconnect the control rod and
the support rod from the transaxle and remove the
rods from the vehicle. (10) Check all the components for deterioration,
wear and damage. Renew the unserviceable compo-
nents as necessary. Assembly is a reversal of the dismantling proce-
dure with attention to the following points:

(1) Install all the components to the locations
noted during dismantling.
(2) Lubricate all the pivot points with multipur-
pose grease prior to assembly. (3) Tighten all the nuts securely.
(4) Road test the vehicle and check for correct
gear selection.
6. DRIVE SHAFTS

TO REMOVE AND INSTAL
(1) Remove the dust cap from the centre of the
front hub. Remove the split pin and nut retainer from
the outer end of the drive shaft. (2) With an assistant applying the brakes, loosen
the nut on the outer end of the drive shaft.
(3) Raise the front of the vehicle and support it
on chassis stands. If necessary, refer to the Wheels and
Tires section for the correct jacking points.

Assembled view of the left hand side drive shaft
assembly.
(4) Remove the split pin and castellated nut
retaining the tie rod to the steering knuckle. (5) Disconnect the tie rod end from the steering
knuckle using a suitable puller or alternatively place a
hammer or dolly on one side of the steering knuckle
and strike the opposite side with a hammer.
(6) Remove the split pin and castellated nut
retaining the suspension ball joint to the bottom of the
steering knuckle. (7) Disconnect the suspension ball joint from
the steering knuckle using a suitable puller or alterna-
tively place a hammer or dolly on one side of the
steering knuckle and strike the opposite side with a
hammer. (8) Remove the retaining bolts and remove the
brake caliper from the stee ring knuckle. Refer to the
Assembled view of the right hand side drive shaft
assembly.

138 Manual Transaxle and Drive Shafts
Brakes section if necessary. Suspend the caliper with
wire or cord attached to the coil spring.

(9) Hold the steering knuckle and hub assembly
and tap the drive shaft out of the hub using a soft

faced hammer.
(10) Drain the oil from the transaxle into a
container.
(11) Prise the drive shaft out of the transaxle and
remove the drive shaft from the vehicle.
Installation is a reversal of the removal procedure
with attention to the following points:

(1) Ensure that the drive sh aft is firmly attached
to the differential side gear by attempting to pull the
shaft out of the gear. (2) Tighten all nuts securely and install new split
pins. (3) Fill the transaxle with the specified grade and
quantity of oil.
TO DISMANTLE AND ASSEMBLE

(1) Remove the drive shaft from the vehicle as
previously described.
(2) Remove and discard both the inner C.V.
joint boot retaining clips from the inner C.V. joint. (3) Roll back the large en d of the inner C.V.-
joint boot using a thin blade screwdriver, prise out the
C.V. joint retaining ring.
(4) Withdraw the C.V. joint housing from the
drive shaft and ball assembly. (5) Remove the inner snap ring retaining the ball
assembly to the drive shaft and withdraw the ball
assembly. (6) Remove the remaining inner C.V. joint re-
taining snap ring and the C.V. joint boot from the
drive shaft. (7) Noting their installed positions remove the
cage and ball assembly off the inner race and press the
balls out of the cage. (8) Remove and discard the clips retaining the
outer C.V. joint boot to the drive shaft and remove
the C.V. joint boot.
NOTE: The outer C.V. joint cannot be
dismantled.

(9) Wash all parts in a suitable solvent and blow
dry with compressed air.
(10) Inspect the ball contact faces of the inner ball
race and C.V. joint housing for pitting and wear.

(11) Inspect the ball cage and the balls for wear
and damage. (12) Rotate the drive shaft with the outer C.V.
joint at a sharp angle and inspect the internal
components of the outer C.V. joint for wear and
damage. Renew if necessary by tapping the C.V. joint
from the drive shaft.
NOTE: Do not reuse the retaining snap ring
if the C. V. joint is removed from the drive
shaft.

(13) Check the C.V. joint boots for damage and
deterioration. (14) Renew all worn or damaged components as
necessary. Assembly is a reversal of the dismantling proce-
dure with attention to the following points:

(1) Thoroughly pack the outer C.V. joint with
molybdenum disulphide grease. (2) Install the outer C.V. joint boot and retain in
position using new retaining clips. Ensure that the
boot and the clips ar e correctly seated.
(3) Install the inner C.V. joint boot, small
end
first, onto the drive shaft and pull it well down the
shaft. (4) Install the outer snap ri ng for the inner C.V.
joint into its locating groove in the drive shaft. (5) Position the inner ball race inside the ball
cage with the chamfered end of the ball race towards
the small end of the cage. (6) Press the balls firmly into the ball cage,
ensure that the balls are fully seated. (7) Install the ball assem bly onto the drive
shaft
with the small end of the cage towards the outer C.V.
joint and install the inner snap ring retaining the
ball
assembly onto the drive shaft.
(8) Pack the C.V. joint with the prescribed
amount of molybdenum disul phide grease. Refer to
Specifications. (9) Install the C.V. joint retaining ring into the
C.V. joint housing. Ensure that the retaining ring is
correctly seated.

Dismantled view of the inner C.V. joint. Install the ball assembly onto the drive shaft, with the
small end of the cage towards the outer C.V. joint.

Manual Transaxle and Drive Shafts 139

SNAP RING
Assembled view of the inner C.V. joint.
(10) Slide the large end of the inner C.V. joint
boot over the inner C.V. joint housing and locate the
boot in the groove in the housing.
(11) Pull the C.V. joint until the boot is the
normal length. Deformation of the boot could occur if
this operation is neglected. (12) With no vacuum or pressure present in the
C.V. joint boot, install the two C.V. joint boot
retaining clips.

Install the C.V. joint retain ing ring into the C.V. joint
housing. Ensure that the retaining ring is correctly
seated.
NOTE: Ensure that the retaining dips are
securely installed preven ting the entry of
damaging dust or water and that the lock
tabs on the retaining clips are correctly bent
over.

(13) Install the remaining snap ring onto the inner
C.V. joint housing shaft and install the drive shaft to
the vehicle as previously described.

142 Automatic Transaxle
(8) Install the dipstick and start the engine and
recheck the fluid level.

NOTE; Do not overfill the transaxle or
foaming and unsatisfactory operation of the
transaxle will result.

TO DRAIN AND REFILL
This is not a normal maintenance and lubrication
procedure. It is only necessary to drain the complete
system, including the torq ue converter and the oil
cooler, when the transaxle assembly is removed for
overhaul or the renewal of transaxle components such
as bearings, clutches or as semblies. When this condi-
tion arises, the torque converter and the cooler should
be cleaned and flushed to remove any dirt or sludge.

After transaxle overhaul, install approximately 6
liters of new transaxle fluid, and top up as previously
described.

4. BRAKE BAND
Band adjustment is not a normal maintenance
procedure.

The adjustment entails removal of the valve body
and for this reason the vehicle should be taken to an
authorized dealer.

5. KICKDOWN CABLE
TO ADJUST
(1) On models with a 1.6 liter engine, remove
the air cleaner assembly. (2) With the aid of an assistant, ensure that the
throttle valve is fully open when the throttle pedal is
fully depressed. (3) Push the clip on the outer kickdown cable
and pull the cable away from the throttle linkage.


View of the kickdown cable adjustment point. 1.6 liter
engine.
(4) Slowly depress the throttle pedal to the full
throttle position.

The outer kickdown cable will automatically ad-
just and emit a clicking noise.

6. TRANSAXLE SELECTOR LINKAGE
TO ADJUST CONTROL CABLE
(1) Place the selector lever in the Park position.
(2) Loosen the control cable locknuts and ensure
that the transaxle selector lever is in the Park position.

View of the transaxle selector linkage control cable
adjustment.
(3) Hold the selector rod horizontal and adjust
the outer locknut until it touches the selector rod.

(4) Tighten the inner locknut securely.
7. NEUTRAL SAFETY SWITCH
The neutral safety switch, incorporating the re-
verse lamp switch is located on the transaxle case

View of the kickdown cable adjustment point. The
arrow indicates the direction in which the outer kick-
down cable must be pulled to initiate the automatic adjustment. 1.8 liter engine.

Automatic Transaxle 143
facing towards the radiator support panel at the front
of the vehicle.

The neutral safety switch allows electrical current
to pass to the starter circ uit only when the selector
lever is in the Park or Neutral position. The switch is
adjustable but non-repairable.

TO TEST
(1) Disconnect the neutral safety switch wiring
connector.
(2) Connect an ohmmeter between terminals 1
and 2 at the neutral safety switch wiring connector.
Continuity should exist when the selector lever is in
the P or N positions. (3) Perform the same check with terminals 3 and
4 with the selector lever in the R position. Continuity
should exist.
NOTE: If the readings are other than that
specified, the neutral safety switch will have
to be adjusted or renewed.


Neutral safety switch connector terminal identification.
TO ADJUST
(1) Select Neutral and firmly apply the hand-
brake. (2) Loosen the neutral safety switch retaining
bolts.
(3) Align the holes in the neutral safety switch
body and the neutral safety switch arm. (4) Install a 2.5 mm diameter split pin or drill bit
into the holes to align the arm with the neutral safety
switch body. (5) Secure the retaining bolts and test the switch
as previously described.

If the test indicates a fault, renew the neutral
safety switch.

TO REMOVE AND INSTAL
(1) Raise the front of the vehicle and support it
on chassis stands. (2) Remove the selector cable split pin and wave
washer from the transaxle selector lever.
(3) Disconnect the electric al connector and re-
move the neutral safety switch retaining bolts. (4) Maneuver the neutral safety switch clear of
the transaxle selector lever and withdraw the switch
from the vehicle. Installation is a reversal of the removal procedure
with attention to the following points:

(1) Clean the area around the neutral safety
switch mounting.
(2) Apply a small amount of chassis grease to the
jaws of the neutral safety switch arm. (3) Check the adjustment of the selector cable as
previously described. (4) Adjust the neutral safety switch as previ-
ously described.

(5) Check the operation of the neutral safety
switch and ensure that the engine will not start in any
position other than P and N. Check that the reversing
lamps operate only when R is selected.

8. TRANSAXLE ASSEMBLY
Special Equipment Required:
To Remove and Install — Suitable trolley jack to
which the transaxle can be secured

TO REMOVE AND INSTAL
(1) Raise the front of the vehicle and support it
on chassis stands. Remove the left hand front wheel.

(2) Disconnect the negative battery terminal. Remove the left hand side inner mudguard

(3)
panel.

(4) Remove the left hand drive shaft as de-
scribed in the Manual Tran saxle and Drive Shafts
section. (5) Disconnect the vehicle speed sensor wiring,
selector control cable and the neutral safety switch
wiring from the transaxle. Disconnect the kickdown
cable from the throttle linkage and the support
bracket. (6) Disconnect the oil cooler hoses from the
Using a 2.5 mm drill bit to adjust the neutral safety
switch.

144 Automatic Transaxle

Front view of the automatic transaxle.
transaxle. Plug the hoses and connections to prevent
the ingress of dirt and the loss of fluid.

(7) Remove the starter motor as described in the
Electrical System section.
(8) Mark the torque converter and the drive
plate to aid assembly.
(9) Remove the bolts retaining the torque con-
verter to the drive plate. Rotate the engine to access
the bolts through the starter motor opening. (10) Remove the bolts retaining the converter
housing to the rear of the engine. (11) Secure the transaxle to a trolley jack and
raise the transaxle slightly. (12) Remove the through bolt from the transaxle
mounting.
(13) Support the engine on a jack with timber
between the engine sump and the jack. (14) Maneuver the transaxle away from the
engine. Lower the trolley jack and withdraw the
transaxle from beneath the vehicle.
NOTE: To prevent accidental separation of
the torque converter from the transaxle
assembly, attach a metal strap across the
converter housing.

Installation is a reversal of the removal procedure
with attention to the following points:

(1) Check the torque converter drive plate for
any damage, wear and runout. The maximum runout
permissible is 0.50 mm.
(2) Ensure that the torque converter is fully
engaged in the transaxle be fore attempting to install
the transaxle to the engine. (3) Install the transaxle assembly to the vehicle
and install the converter housing retaining bolts. (4) Align the torque converter and drive plate

Install a strap to the converter housing to hold the
torque converter in position.


Rear view of the automatic transaxle.
with the marks made on removal.
(5) Install the torque converter retaining bolts.
(6) Turn the engine over by hand several times
to ensure that the torque converter is not binding. (7) Use only the specified type and quantity of
transaxle fluid.
(8) Connect and adjust the neutral safety switch
and kickdown cable as previously described.
(9) Road test the vehicle and check the opera-
tion of the kickdown cable and selector cable. (10) After road testing inspect the transaxle for
any fluid leaks and rectify as required.
CONVERTER HOUSING