torque NISSAN ALMERA 2001 Service Manual

Special Service ToolsNJST0004
Tool number
Tool nameDescription
KV48100700
Torque adapter
NT169
Measuring pinion rotating torque
KV48102500
Pressure gauge adapter
NT542
Measuring oil pressure
ST27180001
Steering wheel puller
NT544
Removing steering wheel
HT72520000
Ball joint remover
NT546
Removing ball joint
a: 33 mm (1.30 in)
b: 50 mm (1.97 in)
r: R11.5 mm (0.453 in)
KV48103500
Pressure gauge
NT547
Measuring oil pressure
KV48104400
Rack seal ring reformer
NT550
Reforming teflon ring
a: 50 mm (1.97 in) dia.
b: 36 mm (1.42 in) dia.
c: 100 mm (3.94 in)
ST3127S000
1 GG91030000
Torque wrench
2 HT62940000
Socket adapter
3 HT62900000
Socket adapter
NT541
Measuring turning torque
PREPARATION
Special Service Tools
ST-3

NJST0006
NVH Troubleshooting ChartNJST0006S01Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
Reference pageST-7
ST-8
ST-20
ST-20
ST-20
ST-7
ST-6
ST-8
Refer to EM-16.
Ð
ST-11
ST-6
ST-15
ST-14
ST-16
AX-3
AX-3
SU-4
SU-4
SU-4
BR-7
Possible cause and
SUSPECTED PARTS
Fluid level
Air in hydraulic system
Tie-rod ball joint swinging force
Tie-rod ball joint rotating torque
Tie-rod ball joint end play
Steering gear fluid leakage
Steering wheel play
Steering gear rack sliding force
Drive belt looseness
Improper steering wheel
Improper installation or looseness or tilt lock lever
Mounting rubber deterioration
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
DRIVE SHAFT
AXLE
SUSPENSION
TIRES
ROAD WHEEL
BRAKES
Symptom STEERINGNoise´´´´´´´´´ ´´´´´´
Shake´´´ ´´´´´´
Vibration´´´´´ ´´´´
Shimmy´´´ ´ ´´´´´
Judder´ ´ ´´´´´
´: Applicable
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
ST-5

SST879C
+Install pipe connector.
+Observe specified tightening torque when tightening high-pres-
sure and low-pressure pipe connectors. Excessive tightening
will damage threads of connector or O-ring.
Connector tightening torque:
1 Low-pressure side
27 - 39 N´m (2.8 - 4.0 kg-m, 20 - 29 ft-lb)
2 High-pressure side
15 - 25 N´m (1.5 - 2.5 kg-m, 11 - 18 ft-lb)
+The O-ring in low-pressure pipe connector is larger than that
in high-pressure connector. Take care to install the proper
O-ring.
SST824A
+Initially, tighten nut on tie-rod outer socket and knuckle arm to
29 to 39 N´m (3 to 4 kg-m, 22 to 29 ft-lb). Then tighten further
to align nut groove with first pin hole so that cotter pin can be
installed.
CAUTION:
Tightening torque must not exceed 49 N´m (5 kg-m, 36 ft-lb).
NOTE:
Only the dust boot, tie-rod inner socket and tie-rod outer socket can
be disassembled on models for Europe.
SST819A
+Before removing lower joint from gear, set gear in neutral
(wheels in straight-ahead position). After removing lower joint,
put matching mark on pinion shaft and pinion housing to record
neutral position.
+To install, set left and right dust boots to equal deflection.
Attach lower joint by aligning matching marks of pinion shaft
and pinion housing.
+Tighten gear housing mounting bracket bolts.
SST862CB
DisassemblyNJST00231. Prior to disassembling, measure pinion rotating torque. Record
the pinion rotating torque as a reference.
+Before measuring, disconnect gear housing tube and
drain fluid.
+Use soft jaws when holding steering gear housing. Handle
gear housing carefully, as it is made of aluminum. Do not
grip cylinder in a vise.
2. Remove gear sub-assembly, O-ring and shim.
Gear sub-assembly cannot be disassembled. If it is faulty,
replace with a new one.
POWER STEERING GEAR AND LINKAGE
Removal and Installation (Cont'd)
ST-18

SST051C
3. Remove tie-rod outer sockets and boots.
4. Loosen tie-rod inner socket by prying up staked portion, and
remove socket and spacer.
5. Remove retainer.
6. Usea2to2.5mm(0.079 to 0.098 in) diameter drill to com-
pletely remove staked portion of gear housing end.
SST052C
7. Remove end cover assembly with a suitable tool.
8. Draw out rack assembly.
9. Remove rack seal ring.
+Using a heat gun, heat rack seal to approximately 40ÉC
(104ÉF).
+Remove rack seal ring.
Be careful not to damage rack.
SST472A
10. Remove center bushing and rack oil seal using tape wrapped
socket and extension bar.
Do not scratch inner surfaces of pinion housing.
InspectionNJST0024Thoroughly clean all parts in cleaning solvent or DEXRONTMIII or
equivalent. Blow dry with compressed air, if available.
BOOTNJST0024S01+Check condition of boot. If cracked excessively, replace it.
+Check boots for accumulation of power steering fluid.
RACKNJST0024S02Thoroughly examine rack gear. If damaged, cracked or worn,
replace it.
GEAR SUB-ASSEMBLYNJST0024S03+Check pinion gear. If it is worn or damaged, replace as a gear
sub-assembly.
+Manually spin bearing. If torque variations or free play are
noted, replace as a gear sub-assembly.
GEAR HOUSING CYLINDERNJST0024S04Check gear housing cylinder bore for scratches or other damage.
Replace if necessary.
POWER STEERING GEAR AND LINKAGE
Disassembly (Cont'd)
ST-19

SST468C
TIE-ROD OUTER AND INNER SOCKETSNJST0024S05+Check ball joints for swinging force.
Tie-rod outer and inner ball joints swinging force ªAº:
Refer to SDS, ST-34.
+Check ball joint for rotating torque.
Tie-rod outer ball joint rotating torque ªBº:
Refer to SDS, ST-34.
+Check ball joints for axial end play.
Tie-rod outer and inner ball joints axial end play ªCº:
Refer to SDS, ST-34.
+Check condition of dust cover. If cracked excessively, replace
outer tie-rod.
SST083B
AssemblyNJST00251. Using a heat gun, heat new teflon rack seal ring to approxi-
mately 40ÉC (104ÉF). Then place it onto rack.
SST885BA
2. Using Tool, compress rack seal ring securely onto rack.
Always insert Tool from the rack gear side.
SST201A
3. Insert new rack oil seal.
+Place plastic film into rack oil seal to prevent damage by
rack teeth.
+Do not forget to remove plastic film after rack oil seal is
positioned properly.
+Make sure lips of rack oil seal face each other.
POWER STEERING GEAR AND LINKAGE
Inspection (Cont'd)
ST-20

SST863C
4. Install center bushing and rack oil seal with rack assembly.
SST321B
5. Insert rack oil seal and end cover assembly to rack. Then
tighten end cover assembly.
SST073B
6. Fasten end cover assembly to gear housing by staking.
SST086BA
7. Set rack gear in neutral position.
Rack stroke ªSº:
Refer to SDS, ST-34.
SST880C
8. Install adjustment shims and O-rings to gear sub-assembly.
+Install the same number of adjustment shims as before,
regardless of whether or not gear sub-assembly is replaced.
+Discard old O-rings; replace with new ones.
9. Tighten gear subassembly securing bolts to specified tighten-
ing torque.
POWER STEERING GEAR AND LINKAGE
Assembly (Cont'd)
ST-21

SST865C
10. Ensure that the rack is centered. Install rear cover cap so that
its protrusion is positioned as shown in figure.
SST087B
11. Install diaphragm spring into gear housing.
+Always install retainer, spring washer and diaphragm spring in
that order.
+Make sure convex end (painted white) of diaphragm spring
faces outward when installing.
12. Install spring seat retainer spring and adjusting screw tempo-
rarily.
SST866C
13. Install lock plate to rack.
a. Temporarily install spacer ring to rack.
Discard old spacer ring; replace with a new one.
b. Install lock plate to inner socket.
Discard old lock plate; replace with a new one.
c. Apply a coat of locking sealant to inner socket threads. Screw
inner socket into rack and tighten to specified torque.
d. Clinch lock plate at rack groove location (at two points).
e. Install spacer ring to lock plate as shown in the Figure at left.
Be careful not to damage spacer ring during installation
SST867C
14. Tighten outer socket lock nut.
Tie-rod length ªLº:
Refer to SDS, ST-34.
SST086BA
15. Measure rack stroke.
Rack stroke ªSº:
Refer to SDS, ST-34.
POWER STEERING GEAR AND LINKAGE
Assembly (Cont'd)
ST-22

SST967A
16. Before installing boot, coat the contact surfaces between boot
and tie-rod with grease.
SST868C
17. Install boot bands.
+Securely install boot band to boot groove and clinch the root
section of the trapezoidal area.
+Make sure that there is a clearance of 3.5 mm (0.138 in) or less
at the clinched section of the boot band. Refer to the Figure at
left.
SST869C
+After installing gear in vehicle, make sure that the clinched
section of boot band is positioned toward the rear of vehicle (to
prevent interference with adjacent parts).
SST719C
AdjustmentNJST0026Adjust pinion rotating torque as follows:
1. Set rack to the neutral position without fluid in the gear.
2. Coat the adjusting screw with locking sealant and screw it in.
3. Lightly tighten lock nut.
4. Tighten adjusting screw to a torque of 4.9 to 5.9 N´m (50 to 60
kg-cm, 43 to 52 in-lb).
5. Loosen adjusting screw, then retighten it to 0.2 N´m (2 kg-cm,
1.7 in-lb).
SST862CB
6. Move rack over its entire stroke several times.
7. Measure pinion rotating torque within the range of 180É from
neutral position.
Stop the gear at the point of maximum torque.
8. Loosen adjusting screw, then retighten it to 4.9 N´m (50 kg-cm,
43 in-lb).
9. Loosen adjusting screw by 50É to 70É.
POWER STEERING GEAR AND LINKAGE
Assembly (Cont'd)
ST-23

SST713C
10. Prevent adjusting screw from turning, and tighten lock nut to
specified torque.
SST090B
11. Check rack sliding force on vehicle as follows:
a. Install steering gear onto vehicle, but do not connect tie-rod to
knuckle arm.
b. Connect all piping and fill with steering fluid.
c. Start engine and bleed air completely.
d. Disconnect steering column lower joint from the gear.
e. Keep engine at idle and make sure steering fluid has reached
normal operating temperature.
f. Pull tie-rod slowly to move it from neutral position to±11.5 mm
(±0.453 in) at speed of 3.5 mm (0.138 in)/s. Check that rack
sliding force is within specification.
Average rack sliding force:
Sedan
152 - 240 N (15.5 - 24.5 kg, 34.2 - 54.0 lb)
Hatchback
132 - 308 N (13.5 - 31.4 kg, 30 - 69 lb)
Maximum force deviation:
Sedan
98 N (10 kg, 22 lb)
Hatchback
176 N (17.9 kg, 39 lb)
g. Check sliding force outside above range at rack speed of 40
mm (1.57 in)/s.
Maximum rack sliding force (Sedan only):
294 N (30 kg, 66 lb)
Maximum force deviation (Sedan only):
147 N (15 kg, 33 lb)
+If rack sliding force is not within specification, readjust by
repeating adjustment procedure from the beginning.
+If rack sliding force is still out of specification after
readjustment, gear assembly needs to be replaced.
POWER STEERING GEAR AND LINKAGE
Adjustment (Cont'd)
ST-24

Steering Gear and LinkageNJST0035
Applied modelSedan Hatchback
QG engine YD engine QG engine YD engine
Steering gear type PR24AD PR25T
Tie-rod outer ball
jointSwinging force at cotter pin hole:
ªAº N (kg, lb)64.6 - 65.0 (6.59 - 6.63, 14.52 - 14.61)
Rotating torque: ªBº N´m (kg-cm,
in-lb)0.29 - 2.94 (3.0 - 30.0, 2.6 - 26.0)
Axial end play: ªCº mm (in) 0 (0)
Tie-rod inner ball
jointSwinging force*: ªAº N (kg, lb) 1.61 - 12.9 (0.164 - 1.32, 0.36 - 2.90)
Axial end play: ªCº mm (in) 0 (0)
Tie-rod standard length ªLº mm (in) 160.0 (6.299) 164.0 (6.457) 132 (5.20) 136 (5.35)
*: Measuring point [!: 62 mm (2.44 in)]
SST488C
Retainer adjustment
Adjusting screwInitial tightening torque N´m (kg-
cm, in-lb)3.9 - 5.9 (40 - 60, 35 - 52) Ð
Retightening torque after
loosening N´m (kg-cm, in-lb)0.2 (2, 1.7) Ð
Tightening torque after gear has
settled N´m (kg-cm, in-lb)3.9 - 5.9 (40 - 60, 35 - 52) Ð
Returning angle degree 50É - 70É Ð
Rack stroke ªSº mm (in)65.0 (2.559)
SST086BA
SERVICE DATA AND SPECIFICATIONS (SDS)
Steering Gear and Linkage
ST-34