Rear brake DAEWOO LACETTI 2004 Service Repair Manual

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TABLE OF CONTENTS
Section 0B General Information
Section 1 Engine
Section 1A General Engine Information
Section 1C1 1.4L/1.6L DOHC Engine Mechanical
Section 1C2 1.8L DOHC Engine Mechanical
Section 1D Engine Cooling
Section 1E Engine Electrical
Section 1F Engine Controls
Section 1G Engine Exhaust
Section 2 Suspension
Section 2A Suspension Diagnosis
Section 2B Wheel Alignment
Section 2C Front Suspension
Section 2D Rear Suspension
Section 2E Tires and Wheels
Section 3 Driveline/Axle
Section 3A Automatic Transaxle Drive Axle
Section 3B Manual Transaxle Drive Axle
Section 4 Brakes
Section 4A Hydraulic Brakes
Section 4B Master Cylinder
Section 4C Power Booster
Section 4D Front Disc Brakes
Section 4E1 Rear Disc Brakes
Section 4E2 Rear Drum Brakes
Section 4F Antilock Brake System
Section 4G Parking Brake
Section 5 Transmission/Transaxle
Section 5A1 ZF 4HP16 Automatic Transaxle
Section 5A2 AISIN Automatic Transaxle
Section 5B Five-Speed Manual Transaxle
Section 5C Clutch
Section 6 Steering
Section 6A Power Steering System
Section 6B Power Steering PumpSection 6C Power Steering Gear
Section 6E Steering Wheel and Column
Section 7 Heating, Ventilation, and Air
Conditioning (HVAC)
Section 7A Heating and Ventilation System
Section 7B Manual Control Heating, Ventilation,
and Air Conditioning System
Section 7D Automatic Temperature Control HVAC
Section 8 Restraints
Section 8A Seat Belts
Section 8B Supplemental Inflatable Restraints
(SIR)
Section 9 Body and Accessories
Section 9A Body Wiring System
Section 9B Lighting Systems
Section 9C Horns
Section 9D Wipers/Washer Systems
Section 9E Instrumentation/Driver Information
Section 9F Audio Systems
Section 9G Interior Trim
Section 9H Seats
Section 9I Waterleaks
Section 9J Windnoise
Section 9K Squeaks and Rattles
Section 9L Glass and Mirrors
Section 9M Exterior Trim
Section 9N Frame and Underbody
Section 9O Bumpers and Fascias
Section 9P Doors
Section 9Q Roof
Section 9R Body Front End
Section 9S Body Rear End
Section 9T1 Remote Keyless Entry and Anti–Theft
System
Section 9T2 Immobilizer Anti–Theft System

GENERAL INFORMATION 0B – 3
DAEWOO V–121 BL4
Automatic Transaxle
Application1.4L DOHC1.6L DOHC1.8L DOHC
Maker–AISINZF
Type or Model–81–40LE4HP16
Gear Ratio :
1st
2nd
3rd
4th
Reverse–
–
–
–
–2.875:1
1.568:1
1.000:1
0.697:1
2.300:12.719:1
1.487:1
1.000:1
0.717:1
2.529:1
Final Drive Ratio–3.750:13.945:1
Oil Capacity–5.77±0.2L (6.1±0.2 qts)6.9±0.2L (7.3±0.2 qts)
Brake
Application1.4L DOHC1.6L DOHC1.8L DOHC
Booster Size :
Single
Dual241.3 mm (9.5 in.)
177.8 and 203.2 mm
(7 and 8 in.)






Master Cylinder Diameter22.22 mm (0.875 in.)


Booster Ratio5.5 : 1


Front Brake :
Disc Type
Disc SizeVentilated
256 mm (10 in.)






Rear Brake (Drum) :
Drum Inside Diameter
Wheel Cylinder Diame-
ter200 mm (7.9 in.)
20.64 mm (0.813 in.)






Rear Brake (Disc) :
Disc Type
Disc SizeSolid
258 mm (10.2 in.)






Fluid Capacity0.5L (0.5 qts)


Tire and Wheel
Application1.4L DOHC1.6L DOHC1.8L DOHC
Tire Size195/55R15


Standard Wheel Size6Jx15 (Steel)


Optional Wheel Size6Jx15 (Alloy)


Inflation Pressure at Full
Load30 psi (207 kPa)

GENERAL INFORMATION 0B – 11
DAEWOO V–121 BL4
Chassis and Body
Maintenance ItemMaintenance Interval
Kilometers or time in months, whichever comes first
x 1,000 km1153045607590105120
x 1,000 miles0.6918273645546372
Months–1224364860728496
Interior air filter (A/C)RRRRRRRR
Exhaust pipes & mountingsIIIIIIII
Brake/Clutch fluid (1) (4)IIRIRIRIR
Front brake pads and discs(3)IIIIIIII
Rear brake pads & discs or drums and
linings (3)IIIIIIII
Parking brakeIIIIIIIII
Brake line and connections (Including
booster)IIIIIIII
Manual Transaxle Oil *(1)IIIIIIII
Automatic transaxle fluid *(1) (5)IIIIIIII
Tighten chassis and underbody bolts
and nutsIIIIIIII
Tire condition and inflation pressureIIIIIIIII
Wheel alignment (2)Inspect when abnormal condition is noted
Steering wheel and linkageIIIIIIII
Power steering fluid & lines* (1)IIIIIIIII
Drive shaft bootsIIIIIIII
Seat belts, buckles and anchorsIIIIIIII
Lubricate locks, hinges and hood
latchIIIIIIII
Chart Symbols:
I – Inspect and if necessary correct, clean, replenish, or adjust.
R – Replace or change:
(1) Refer to Recommended Fluids And Lubricants.
(2) And if necessary, rotate and balance wheels.
(3) More frequent if operated under severe conditions: short distance driving, extensive idling, frequent low–speed oper-
aion in stop and go traffic, or driving in dusty conditions.
(4) Change the brake/clutch fluid every 15,000 km (9,000 miles), if the vehicle is mainly driven under the following severe
conditions: driving in hilly or mountainous terrain, or towing a trailer/caravan frequently.
(5) 1.8 DOHC model (ZF 4HP16 Automatic Transaxle): Change automatic transaxle fluid every 60,000 Km (36,000 miles)
if the vehicle is mainly driven under any of the following severe conditions:
S In heavy city traffic where the outside temperature regularly reaches 32°C (90°F) or higher, or
S In hilly or mountainous terrain, or
S When doing frequent trailer towing, or
S Uses such as taxi, police or delivery service.

GENERAL INFORMATION 0B – 13
DAEWOO V–121 BL4
EACH TIME THE OIL IS CHANGED
Automatic Transaxle Fluid
Refer to fluid level service procedure of Section 5A, ZF
4HP16 Automatic Transaxle.
Manual Transaxle
Check the fluid level and add fluid as required. Refer to
Section 5B, Five–Speed Manual Transaxle.
Brake System Inspection
This inspection should be done when the wheels are re-
moved for rotation. Inspect the lines and the hoses for
proper hookup, binding, leaks, cracks, chafing, etc. In-
spect the disc brake pads for wear. Inspect the rotors for
surface condition. Also inspect the drum brake linings for
wear and cracks. Inspect other brake parts, including the
drums, the wheels cylinders, the parking brake, etc., at the
same time. Check the parking brake adjustment. Inspect
the brakes more often if habit or conditions result in fre-
quent braking.
Steering, Suspension and Front Drive Axle
Boot And Seal Inspection
Inspect the front and rear suspension and the steering
system for damaged, loose or missing parts, signs of wear
or lack of lubrication. Inspect the power steering lines and
the hoses for proper hookup, binding, leaks, cracks, chaf-
ing, etc. Clean and inspect the drive axle boot and seals
for damage, tears or leakage. Replace the seals if neces-
sary.
Exhaust System Inspection
Inspect the complete system (including the catalytic con-
verter if equipped). Inspect the body near the exhaust sys-
tem. Look for broken, damaged, missing, or out–of–posi-
tion parts as well as open seams, holes, loose
connections, or other conditions which could cause heat
buildup in the floor pan or could let exhaust fumes seep
into the trunk or passenger compartment.
Throttle Linkage Inspection
Inspect the throttle linkage for interference or binding,
damaged, or missing parts. Lubricate all linkage joints and
throttle cable joints, the intermediate throttle shaft bearing,
the return spring at throttle valve assembly, and the accel-
erator pedal sliding face with suitable grease. Check the
throttle cable for free movements.
Engine Drive Belts
Inspect all belts for cracks, fraying, wear and proper ten-
sion. Adjust or replace the belts as needed.
Hood Latch Operation
When opening the hood, note the operation of the secon-
dary latch. It should keep the hood from opening all the
way when the primary latch is released. The hood must
close firmly.
AT LEAST ANNUALLY
Lap and Shoulder Belts Condition and
Operation
Inspect the belt system including: the webbing, the
buckles, the latch plates, the retractor, the guide loops and
the anchors.
Movable Head Restraint Operation
On vehicles with movable head restraints, the restraints
must stay in the desired position.
Spare Tire and Jack Storage
Be alert to rattles in the rear of the vehicle. The spare tire,
all the jacking equipment, and the tools must be securely
stowed at all times. Oil the jack ratchet or the screw mech-
anism after each use.
Key Lock Service
Lubricate the key lock cylinder.
Body Lubrication Service
Lubricate all the body door hinges including the hood, the
fuel door, the rear compartment hinges and the latches,
the glove box and the console doors, and any folding seat
hardware.
Transaxle Neutral Switch Operation on
Automatic Transaxle
CAUTION : Take the following precautions because
the vehicle could move without warning and possibly
cause personal injury or property damage:
S Firmly apply the parking brake and the regular
brakes.
S Do not use the accelerator pedal.
S Be ready to promptly turn off the ignition if the ve-
hicle starts.
On automatic transaxle vehicles, try to start the engine in
each gear. The starter should crank only in P (Park) or N
(Neutral).
Parking Brake and Transaxle P (Park)
Mechanism Operation
CAUTION : In order to reduce the risk of personal in-
jury or property damage, be prepared to apply the reg-
ular brakes promptly if the vehicle begins to move.
Park on a fairly steep hill with enough room for movement
in the downhill direction. To check the parking brake, with
the engine running and the transaxle in N (Neutral), slowly
remove foot pressure from the regular brake pedal (until
only the parking brake is holding the vehicle).
To check the automatic transaxle P (Park) mechanism’s
holding ability, release all brakes after shifting the trans-
axle to P (Park).
Underbody Flushing
Flushing the underbody will remove any corrosive materi-
als used for ice and snow removal and dust control. At
least every spring clean the underbody. First, loosen the
sediment packed in closed areas of the vehicle. Then flush
the underbody with plain water.

0B – 14IGENERAL INFORMATION
DAEWOO V–121 BL4
Engine Cooling System
Inspect the coolant and freeze protection fluid. If the fluid
is dirty or rusty, drain, flush and refill the engine cooling
system with new coolant. Keep the coolant at the proper
mixture in order to ensure proper freeze protection, corro-sion protection and engine operating temperature. Inspect
the hoses. Replace the cracked, swollen, or deteriorated
hoses. Tighten the clamps. Clean the outside of the radia-
tor and the air conditioning condenser. Wash the filler cap
and the neck. Pressure test the cooling system and the
cap in order to help ensure proper operation.
RECOMMENDED FLUIDS AND LUBRICANTS
UsageCapacityFluid/Lubricant
Engine Oil3.75L (4.0 qt) : 1.4L DOHC
3.75L (4.0 qt) : 1.6L DOHC
4.0L (4.2 qt) : 1.8L DOHCAPI SL (ILSAC GF–III) grade or better
SAE 5W–30, SAE10W–30, SAE15W–40
(Cold area : SAE5W–30
Hot area : SAE 15W–40)
Engine Coolant7.0L (7.49 qt) : 1.4L DOHC
7.2L (7.6 qt) : 1.6L DOHC
7.4L (7.8 qt) : 1.8L DOHCMixture of water and good quality ethylene gly-
col base antifreeze (year–round coolant)
Brake Fluid and Clutch Fluid0.5L (0.5 qt)DOT–3 or DOT–4
Power Steering System1.1L (1.2 qt)DEXRON®–III or DEXRON®–IID
Automatic Transaxle5.77 ± 0.2L (6.1 ± 0.2 qts) :
1.6L DOHC (AISIN 81–40LE)ESSO JWS 3309 or ISU DEXRON III
6.9 ± 0.2L (7.3 ± 0.2 qts) :
1.8L DOHC (ZF 4HP16)ESSO LT 71141 or TOTAL ATF H50235
Manual Transaxle1.8L (2.0 qt)Manual Transaxle Fluid
SAE80W (Cold Area : SAE 75W)
Manual Transaxle Shift LinkageAs requiredMultipurpose type grease meeting require-
ments NLGI No. 1 or 2
Key Lock CylindersAs requiredSilicone lubricant
Automatic Transaxle Shift Link-
ageAs requiredEngine oil
Clutch Linkage Pivot PointsAs requiredEngine oil
Floor Shift Linkage PointsAs requiredEngine oil
Hood Latch Assembly
a. Pivots and Spring Anchor
b. Release PawlAs requireda. Engine oil
b. Multipurpose type grease meeting require-
ments NLGI No. 1 or 2
Hood and door hinges
Fuel door hinge
Rear compartment lid hingesAs requiredEngine oil
WeatherstripsAs requiredSilicone grease

GENERAL INFORMATION 0B – 15
DAEWOO V–121 BL4
GENERAL DESCRIPTION
AND SYSTEM OPERATION
GENERAL REPAIR INSTRUCTIONS
S If a floor jack is used, the following precautions are
recommended.
S Park the vehicle on level ground,
block" the front
or rear wheels, set the jack against the frame, raise
the vehicle and support it with chassis stands and
then perform the service operation.
S Before performing the service operation, disconnect
the negative battery cable in order to reduce the
chance of cable damage and burning due to short–
circuiting.
S Use a cover on the body, the seats and the floor to
protect them against damage and contamination.
S Handle brake fluid and antifreeze solution with care
as they can cause paint damage.
S The use of proper tools, and the recommended es-
sential and available tools where specified, are im-
portant for efficient and reliable performance of the
service repairs.S Use genuine DAEWOO parts.
S Discard used cotter pins, gaskets, O–rings, oil
seals, lock washers and self–locking nuts. Prepare
new ones for installation. Normal function of these
parts cannot be maintained if these parts are re-
used.
S Keep the disassembled parts neatly in groups to
facilitate proper and smooth reassembly.
S Keep attaching bolts and nuts separated, as they
vary in hardness and design depending on the posi-
tion of the installation.
S Clean the parts before inspection or reassembly.
S Also clean the oil parts, etc. Use compressed air to
make certain they are free of restrictions.
S Lubricate rotating and sliding faces of parts with oil
or grease before installation.
S When necessary, use a sealer on gaskets to pre-
vent leakage.
S Carefully observe all specifications for bolt and nut
torques.
S When service operation is completed, make a final
check to be sure service was done properly and the
problem was corrected.

GENERAL INFORMATION 0B – 17
DAEWOO V–121 BL4
VIN Plate Location
The vehicle identification number (VIN) plate is attached
to the top of the front panel support.
VIN Plate
1. Manufacturer ’s Name
2. Whole Vehicle Type Approval No.
3. VIN (Vehicle Identification No.)
4. GVW
5. Combination Weight (GVW + Braked Trailer
Weight)
6. Maximum Permissible Axle Weight – Front
7. Maximum Permissible Axle Weight – Rear
Engraved VIN Location
The vehicle identification number (VIN) is engraved in the
top of the bulkhead.
Engine Number Location
The engine number is stamped on the cylinder block under
the No. 4 exhaust manifold of the engine.
1.4L/1.6L DOHC Engine
1.8L DOHC Engine

1C1 – 26I1.4L/1.6L DOHC ENGINE MECHANICAL
DAEWOO V–121 BL4
5. Connect the throttle cable at the throttle body and
the intake manifold.
6. Install the intake manifold support bracket upper
bolts to the intake manifold.
Tighten
Tighten the intake manifold support bracket upper
bolts to the intake manifold to 25 NSm (18 lb–ft).
7. Connect the surge tank coolant hose at the throttle
body.
8. Connect the heater inlet hose to the cylinder head.
9. Install the generator upper retaining bolt.
Tighten
Tighten the generator upper retaining bolt to 20 NSm
(15 lb–ft).
10. Connect the fuel feed line at the fuel rail.
11. Connect all the disconnected vacuum hoses and
the brake booster vacuum hose at the intake man-
ifold.
12. Install the catalytic converter retaining nuts at the
exhaust manifold flange.
Tighten
Tighten the catalytic converter to exhaust manifold
flange nuts to 40 NSm (30 lb–ft).
13. Install the rear timing belt cover.
14. Install the rear timing belt cover bolts.
Tighten
Tighten the rear timing belt cover bolts to 10 NSm (89
lb–in).

SECTION : 2A
SUSPENSION DIAGNOSIS
TABLE OF CONTENTS
DIAGNOSIS2A–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Diagnosis 2A–1. . . . . . . . . . . . . . . . . . . . . . . . . Torque Steer 2A–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tapered Roller Bearing 2A–6. . . . . . . . . . . . . . . . . . . . .
DIAGNOSIS
GENERAL DIAGNOSIS
Problems in the steering, the suspension, the tires, and
the wheels involve several systems. Consider all systems
when diagnosing a complaint. Some problems, such as
abnormal or excessive tire wear and scuffed tires, may be
the result of hard driving. Always road test the vehicle first.If possible, do this road test with the customer.
Proceed with the following preliminary checks. Correct
any substandard conditions.
Preliminary Checks
ChecksAction
Inspect the tires for improper pressure and uneven wear.Inflate the tires to the proper pressure.
Inspect the joint from the steering column to the steering
gear for loose connections or wear.Tighten the intermediate shaft pinch bolts. Replace the in-
termediate shaft as needed.
Inspect the front and the rear suspension, the steering
gear, and the linkage for loose or damaged parts.Tighten the front and the rear suspension. Tighten the
steering gear mounting bracket bolts. Tighten the coupling
flange pinch bolts. Replace the front and the rear suspen-
sion as needed. Replace the steering gear as needed. Re-
place the intermediate shaft as needed.
Inspect for out–of–round tires.Perform a free runout test. Match–mount the tires.
Inspect for out–of–balance tires, bent wheels, and worn or
loose wheel bearings.Balance the wheels. Replace the wheels. Replace the
wheel bearings.
Check the power steering pump serpentine belt tension.Tighten the power steering pump serpentine belt.
Inspect the power steering system for leaks. Check the
power steering fluid level.Repair any leaks. Perform a power steering gear test. Add
power steering fluid.
Car Lead/Pull
ChecksAction
Inspect for mismatched or uneven tires.Replace the tires.
Inspect for a broken or a sagging spring.Replace the spring.
Inspect for a radial tire lateral force.Check the wheel alignment. Switch the wheels. Replace
the tires as needed.
Check the front–wheel alignment.Align the front wheels.
Inspect for an off–center steering gear.Reseat the pinion valve assembly. Replace the pinion
valve assembly as needed.
Inspect for front–brake dragging.Adjust the front brakes.

2A – 2ISUSPENSION DIAGNOSIS
DAEWOO V–121 BL4
Abnormal or Excessive Tire Wear
ChecksAction
Check the front–wheel and the rear–wheel alignment.Align the front and the rear wheels.
Inspect for excessive toe on the front and the rear wheels.Adjust the toe on the front and the rear wheels.
Inspect for a broken or a sagging spring.Replace the spring.
Inspect for out–of–balance tires.Balance the tires.
Inspect for worn strut dampeners.Replace the strut dampeners.
Check for a failure to rotate tires.Rotate the tires. Replace the tires as needed.
Check for an overloaded vehicle.Maintain the proper load weight.
Inspect for low tire inflation.Inflate the tires to the proper pressure.
Scuffed Tires
ChecksAction
Inspect for incorrect toe on the front and the rear wheels.Adjust the toe on the front and the rear wheels.
Inspect for a twisted or a bent suspension arm.Replace the suspension arm.
Wheel Tramp
ChecksAction
Inspect for an out–of–balance tire or wheel.Balance the tire or the wheel.
Inspect for improper strut dampener action.Replace the strut dampeners.
Shimmy, Shake, or Vibration
ChecksAction
Inspect for an out–of–balance tire or wheel.Balance the tire or the wheel.
Inspect for excessive wheel hub runout.Measure the hub flange runout. Replace the hub as need-
ed.
Inspect for excessive brake drum or brake rotor imbal-
ance.Adjust the brakes. Replace the brake rotor or the brake
drum as needed.
Inspect for worn tie rod ends.Replace the outer tie rods.
Inspect for wheel trim imbalance.Balance the wheel.
Inspect for a worn lower ball joint.Replace the lower ball joint.
Inspect for excessive wheel runout.Measure the wheel runout. Replace the wheel as needed.
Inspect for excessive loaded radial runout on the tire and
wheel assembly.Match–mount the tire and wheel assembly.
Hard Steering
ChecksAction
Check the steering gear preload adjustment.Perform a rack bearing preload adjustment.
Check the hydraulic system. Test the power steering sys-
tem pressure with a gauge.Replace the seals and the hoses as needed.
Inspect for binding or catching in the steering gear.Lubricate the steering gear. Repair or replace the steering
gear as needed.
Inspect for a loose steering gear mounting.Tighten the steering gear mounting bracket nuts.