Daewoo Nubira. Manual - part 20

9O – 14

I

BUMPERS AND FASCIAS

DAEWOO V–121 BL4

GENERAL DESCRIPTION

AND SYSTEM OPERATION

BUMPERS

The bumper systems are designed to sustain a collision
into a fixed barrier at either 8 km/h (5 mph) or 4 km/h (2.5
mph) without damage. After absorbing the energy of a col-

lision, these bumper systems restore themselves to their
original position. Both the front and the rear bumpers fea-
ture an internal foam energy absorber and a polymer fas-
cia cover. The rear bumper fascia must be removed before
access can be gained to the energy absorber and the
bumper impact bar. The front bumper assembly can be re-
moved as a whole unit or the fascia cover can be removed
separately.

SECTION : 9N

FRAME AND UNDERBODY

TABLE OF CONTENTS

SPECIFICATIONS 

9N–1

. . . . . . . . . . . . . . . . . . . . . . . . . . 

FASTENER TIGHTENING SPECIFICATIONS

9N–1

. 

MAINTENANCE AND REPAIR

9N–2

. . . . . . . . . . . . . . . 

ON–VEHICLE SERVICE

9N–2

. . . . . . . . . . . . . . . . . . . . . 

ALIGNMENT CHECKING

9N–2

. . . . . . . . . . . . . . . . . . . 

FLOOR PAN INSULATORS

9N–2

. . . . . . . . . . . . . . . . . 

ENGINE UNDER COVER

9N–3

. . . . . . . . . . . . . . . . . . 

GENERAL DESCRIPTION AND SYSTEM

OPERATION

9N–5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

GENERAL BODY CONSTRUCTION

9N–5

. . . . . . . . . 

ENGINE UNDER COVERS

9N–5

. . . . . . . . . . . . . . . . . 

SPECIFICATIONS

FASTENER TIGHTENING SPECIFICATIONS

Application

N

S

m

Lb–Ft

Lb–In

Engine Under Cover Screw

2

–

18

Front Fascia Splash Shield Screw

1.5

–

13

9N – 2

I

FRAME AND UNDERBODY

DAEWOO V–121 BL4

MAINTENANCE AND REPAIR

ON–VEHICLE SERVICE

ALIGNMENT CHECKING

An accurate method of determining the alignment of the
underbody uses a measuring tram gauge. The tram gauge
set used to perform the recommended measuring checks
must include a vertical pointer.

Two types of measurements can be made with a tram
gauge: direct point–to–point measurements and mea-
surements calculated on a horizontal plane (datum line)
parallel to the underbody. Point–to–point measurements
are generally taken on steering and suspension engine
compartment parts and simply require the vertical pointers
to be set equally.

For horizontal plane measurements, the vertical pointers
must be set as specified for each point to bemeasured.

Dimensions–to–gauge holes are measured to the center
of the holes and flush to the adjacent surface metal unless
otherwise specified. It is recommended that the diagonal
dimensions to the cross–body be checked on both sides
in order to verify the dimensional accuracy of the vehicle
underbody.

FLOOR PAN INSULATORS

The floor pan insulators have been designed for the higher
floor pan temperatures that result from the use of the cata-
lytic converter in the exhaust system. Therefore, when
servicing a vehicle, it is essential that any insulators that
may have been disturbed or removed be reinstalled in the
original sequence and location. Also, if an insulator needs
to be replaced, use only the insulation specified for that
location on the floor pan.

When servicing or replacing interior insulators, observe
the following instructions.

S

 

Install the insulators in the original position and se-
quence. Butt the pieces together in order to avoid
gapping or overlapping.

S

 

If it is necessary to replace an insulator, use only
the specified insulation.

S

 

Use the original part to determine the amount of
replacement material required and as a template for
cutting and fitting the new piece to the floor pan.

S

 

When installing the insulator, do not enlarge any
cutouts or holes that are used for the attachment of
interior parts such as the instrument panel or the
floor console.

S

 

Route the cross–body harness for interior parts
over the floor pan insulators. Clip it in the original
location.

S

 

Do not apply spray–on deadeners or trim adhesives
to the top of the floor pan at the area directly over
the catalytic converter or the muffler.

Any insulator service repair or replacement should be the
same thickness, size, and location as the original installa-
tion in the vehicle.

FRAME AND UNDERBODY  9N – 3

DAEWOO V–121 BL4

ENGINE UNDER COVER

Removal Procedure

1.  Raise and suitably support the vehicle.
2.  Remove the screws and the front fascia splash

shield.

3.  Remove the screws, the nuts, and the engine under

cover.

Installation Procedure

1.  Install the engine under cover with the screws and

the nuts.

Tighten

Tighten the engine under cover nuts to 2 N

S

m (18

lbin).

2.  Install the front fascia splash shield with the screws.

Tighten

Tighten the front fascia splash shield screw to 1.5
N

S

m (13 lb–in).

3.  Lower the vehicle.