Nissan Sentra B18 (2020-2025) Service Manual: Replacement Operations

Precautions for Body Repair

Precautions for Body Repair

Warning:

• The repair information in this section is intended for trained body repair technicians who have attained a high level of skill and experience (e.g. ASE Collision Repair Certification, I-CAR Professional Development Program [PDP] training, etc.) in repairing collision damaged Nissan Sentra vehicles using appropriate tools and equipment. Performing repairs without the proper training, tools or equipment could damage the Nissan Sentra vehicle or cause personal injury or death to you or others.

• The information in this Body Repair Manual is a guideline for repairing collision damaged Nissan Sentra vehicles. However, this information cannot cover all possible ways that a vehicle can be damaged. As such, the body repair technician is responsible for making sure that the repair does not affect the structural integrity or safety of the Nissan Sentra vehicle. Improper repair of a damaged vehicle may result in a collision, property damage, personal injury or death.

• Nissan recommends using only new genuine Nissan replacement body parts. Use of used, salvaged or aftermarket body parts is not recommended by Nissan. Non-genuine Nissan components may affect the Nissan Sentra vehicle's structural integrity and crash safety performance, which could result in serious personal injury or death in an accident.

Description

Description

• Technicians are encouraged to read the Body Repair Manual (Fundamentals) in order to ensure that the original functions and quality of the Nissan Sentra vehicle are maintained. The Body Repair Manual (Fundamentals) contains additional information, including cautions and warnings, that are not included in this manual. Technicians should refer to both manuals to ensure proper repair.

• Please note that this information is prepared for worldwide usage, and as such, certain procedures might not apply in some regions or countries.

The symbols used in this section for welding operations are shown below.

Symbol marks	Description
"Number"	"Number" after symbol mark is the total number of welds to apply. Example 1: â– "4"A = 4 MAG plug welds for 3-panel plug weld method. Example 2: "1" x20 (0.79) = 1 MAG seam weld by length 20 mm (0.79 in).
	2-panel spot weld
	3-panel spot weld
	MAG plug weld
		For 3-panel plug weld method
	MAG seam weld / Point weld
	Rivet

• Front pillar butt joint can be determined anywhere within shaded area as shown in the figure. The best location for the butt joint is at position A due to the construction of the Nissan Sentra vehicle.

  

• Determine cutting position and record distance from the locating indent. Use this distance when cutting the service part. Cut outer front pillar over 60 mm (2.36 in) above the inner front pillar cut position.

  

• Prepare a cutting jig to make outer pillar easier to cut. Also, this will permit the service part to be accurately cut at the joint position.

  

• An example of cutting operation using a cutting jig is as per the following.

  

1. Mark cutting lines.

   A: Cut position of outer pillar

   B: Cut position of inner pillar

2. Align cutting line with notch on jig. Clamp jig to pillar.

3. Cut outer pillar along groove of jig (at position A).

4. Remove jig and cut remaining portions.

5. Cut inner pillar at position B in same manner.

Radiator Side Support

Radiator Side Support

Replacement parts:
•	Radiator side support
	Front

Hoodledge

Hoodledge

• Work after radiator side support has been removed.

Replacement parts:
•	Hoodledge		Front

Hoodledge reinforcement

• Work after radiator side support and hoodledge have been removed.

Replacement parts:
•	Hoodledge reinforcement		Front

Strut Housing

Strut Housing

• Work after Radiator side support and hoodledge assembly have been removed.

Replacement parts:
•	Strut Housing
	Front

Strut Housing Extension

Replacement parts:
•	Strut housing extension
	Front

Front Side Member (partial Replacement)

Front Side Member (Partial Replacement)

Work after Radiator side support, hoodledge assembly and front strut housing assembly have been removed.

Replacement part:
•	Front side member outer		Front

FRONT SIDE MEMBER INNER

Replacement part:
•	Front side member inner		Front

FRONT SIDE MEMBER EXTENSION

Replacement parts:
•	Front side member extension		Front

Front Side Member

Front Side Member

Work after Radiator side support, hoodledge assembly and front strut housing assembly have been removed.

Replacement parts:
•	Front side member reinforcements		Front

FRONT SIDE MEMBER (AFTER REINFORCEMENT REMOVAL)

Replacement parts:
•	Front side member		Front

Front Pillar

Front Pillar

FRONT PILLAR OUTER

• Work after the hoodledge has been removed.

Replacement parts:
•	Front pillar section of front body side outer	A.	Sectioning area		Front

Work after rear body side outer has been removed. For spot welding of steel plate of strength 980 MPa, observe the indicated welding conditions. Refer to Welding of Ultra High Strength Steel.

HINGE PILLAR BRACE

• Work after front pillar outer has been removed.

Replacement parts:
•	Front pillar brace		Front

Dash Side

Dash Side

Work after the front pillar portion of body side inner reinforcement and the front pillar lower hinge brace have been removed.

Replacement parts:
•	Dash side	A.	MAG welds		Front

Center Pillar

Center Pillar

CENTER PILLAR OUTER

Replacement parts:
•	Center pillar outer
Note: Measurements from center line.
A.	Sectioning location	B.	140.0 mm (5.50 in)	C.	125.0 mm (4.92 in)	D.	51.0 (2.50 in)
	Front

CENTER PILLAR REINFORCEMENT

Work after center pillar outer portion of front body side has been removed.

Replacement parts:
•	Center pillar reinforcement		Front

CENTER PILLAR INNER

Work after center pillar outer portion and center pillar reinforcement have been removed.

Replacement parts:
•	Center pillar inner	A.	MAG welds		Front

Roof

Roof

STANDARD ROOF PANEL

Note:

Roof panel bows will be removed with roof panel.

Replacement parts:
•	Standard roof panel
	Front

MOONROOF PANEL

Note:

Moonroof panel bows will be removed with roof panel.

Replacement parts:
•	Moonroof panel
	Front

ROOF FRONT AND REAR HEADERS

Replacement parts:
•	Roof front and rear headers
	Front

Roof Side Rail Reinforcement

Roof Side Rail Reinforcement

Replacement parts:
•	Roof side rail reinforcement
	Front

Sill Outer (partial Replacement)

Sill Outer (Partial Replacement)

Replacement parts:
•	Sill outer	A.	Sectioning location		Front

Sill Outer Reinforcement

Sill Outer Reinforcement

Work after the front pillar lower hinge brace and the center pillar reinforcement have been removed.

Replacement parts:
•	Sill outer reinforcement				Front

Sill Inner

Sill Inner

Work after the sill reinforcement, front pillar lower hinge brace and the center pillar and center pillar reinforcement have been removed.

Replacement parts:
•	Sill inner		Front

SILL INNER EXTENSION

Replacement parts:
•	Inner sill extension				Front

Rear Fender

Rear Fender

Replacement parts:
•	Rear fender	A.	Sectioning location	B.	Hem flange		Front

REAR LAMP POCKET

• Work after rear fender portion of the body side outer has been removed.

Replacement parts:
•	Rear lamp pocket		Front

Rear Wheelhouse Outer

Rear Wheelhouse Outer

REAR WHEELHOUSE REINFORCEMENT

• Work after rear fender portion of the body side outer has been removed.

Replacement parts:
•	Rear Outer Wheelhouse Reinforcement		Front

REAR WHEELHOUSE OUTER

Replacement parts:
•	Rear outer wheelhouse		Front

Rear Wheelhouse Inner

Rear Wheelhouse Inner

• Work after rear fender and rear outer wheelhouse have been removed.

Replacement parts:
•	Rear inner wheelhouse assembly	A.	MAG weld		Front

Rear Floor Rear

Rear Floor Rear

REAR FLOOR REAR

Work after rear panel has been removed.

Replacement parts:
•	Rear floor rear		Front

Rear Panel Assembly

Rear Panel Assembly

Replacement parts:
•	Rear panel assembly		Front

Rear Side Member

Rear Side Member

• Work after rear body side outer, sill reinforcement extension, inner and outer wheel house and rear floor rear and have been removed.

Replacement parts:
•	Rear side member		Front	A.	MAG welds

REAR SIDE MEMBER EXTENSION

Replacement parts:
•	Rear side member extension		Front