Nissan Leaf. Manual - part 477

 

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Nissan Leaf. Manual - part 477

 

 

LI-ION BATTERY

EVB-191

< UNIT DISASSEMBLY AND ASSEMBLY >

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BATTERY PACK UPPER CASE : Removal and Installation

INFOID:0000000010121175

DANGER:

Since hybrid vehicles and electric vehicles contain a high voltage battery, there is the risk of

electric shock, electric leakage, or similar accidents if the high voltage component and vehicle are

handled incorrectly. Be sure to follow the correct work procedures when performing inspection and

maintenance.

WARNING:

• Be sure to remove the service plug in order to shut off the high voltage circuits before performing

inspection or maintenance of high voltage system harnesses and parts.

• Be sure to put the removed service plug in pocket and carry it or store it in a tool box or other con-

tainer so that another person does not accidentally connect it while work is in progress.

• Be sure to put on insulating protective gear before beginning work on the high voltage system.

• Clearly identify the persons responsible for high voltage work and ensure that other persons do not

touch the vehicle. When not working, cover high voltage components with an anti-static cover sheet

or similar item to prevent contact with other persons. 

• Refer to 

EVB-7, "High Voltage Precautions"

.

• If the battery pack is to be disassembled, be sure to remove the Li-ion battery controller for prevent-

ing electric shock, fire, and damage to parts.

CAUTION:

There is the possibility of a malfunction occurring if the vehicle is changed to READY status while the

service plug is removed. Therefore do not change the vehicle to READY status unless instructed to do

so in the Service Manual.

ENVIRONMENT FOR LI-ION BATTERY DISASSEMBLY WORK

1. Must be an indoor environment.

• The environment must utilize a shutter or other means to shut out the outside environment and prevent

rain, snow, dust, or other substances from entering.

• The environment must not cause the intrusion of sweat during work, or cause condensation to occur

due to high temperature or humidity.

2. Metal powder, grease, and other foreign substances must not enter.

• The indoor environment must also prevent metal powder, grease, and other foreign substances from

entering due to maintenance performed on other vehicles and other sources during disassembly work.

• If there is a risk of the above substances entering, take appropriate countermeasures, such as use of a

vinyl curtain or an equivalent to shut out the outside environment. 

3. The floor must be dry.

• The floor must not be wet as a result of factors such as vehicle entry during rain or snow.

4. Work space

• The work space must be approximately the size of one entire vehicle.

• Take appropriate countermeasures so that persons other than the operator do not enter the work space,

such as by placing signs indicating that disassembly work is in progress.

5. Standard fire fighting equipment

• Always place a standard fire fighting equipment in the disassembly work area.

• Depending on type of fire (vehicle or battery) use standard fire fighting equipment (water or extin-

guisher).

REMOVAL

Service plug

Service plug retainer

Battery pack upper case

Seal

Plug

Plug washer

Breather

Battery pack case side

: Always replace after every disas-
sembly.

: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

EVB-192

< UNIT DISASSEMBLY AND ASSEMBLY >

LI-ION BATTERY

1. Clean any dust or dirt adhered to the battery pack.
2. Remove the service plug retainer  .

WARNING:

To prevent electric shock, wear insulated protective

gear and use insulated tools.

3. Remove the battery pack upper case mounting bolts   and ground bolts  .

WARNING:

To prevent electric shock, wear insulated protective gear and use insulated tools.

4. Cut the battery pack upper case adhesive according to the following procedure.

WARNING:

To prevent electric shock, wear insulated protective gear.

a. Prepare a windshield cutter.

NOTE:
• Sharpen the blade of the windshield cutter  .
• Apply a tape   for preventing damage to the battery pack.

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: 38 mm (1.50 in) 

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LI-ION BATTERY

EVB-193

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b. Use the windshield cutter and cut the adhesive in the order from 1 to 4 as shown in the figure.

CAUTION:

• When cutting the adhesive, be careful to avoid scratching the battery pack coating to the maxi-

mum extent possible.

• The paint sealant is set between the paint sealant marks stamped on the battery pack upper case

(between   to  ). Therefore be careful not to damage the paint sealant when cutting the adhe-

sive.

• Because the paint sealant functions to release pressure from inside the battery pack, if the paint

sealant is damaged beyond the limit, the battery pack lower case must be replaced. If the paint

sealant damage is less than the limit, repair by applying primer (adhesive primer: 999MP-

43533PP).

NOTE:

• Because there is no clearance at the embossed part, cut the adhesive there last.

Battery pack upper case

Battery pack lower case

Paint sealant

Adhesive

: Paint sealant mark

: Battery front

Paint sealant damage limit:

Continuous length of undamaged section: : 210 mm (8.27 in) or more

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EVB-194

< UNIT DISASSEMBLY AND ASSEMBLY >

LI-ION BATTERY

• Set the windshield cutter (A) at an angle of 90

° to the surface of the battery case.

• Hold the windshield cutter facing toward the grip, and cut the adhesive while holding the blade level.

c.

Use piano wire (A) to cut the adhesive at the battery pack cor-

ners.

CAUTION:

When cutting the adhesive, be careful to avoid scratching

the battery pack coating and paint sealant to the maximum

extent possible.

NOTE:

Press the piano wire against the adhesive at the battery pack

corner, and pull it in alternate directions for cutting of adhesive.

d. Use the windshield cutter (A) for cutting adhesive at the embossed locations.

i.

Insert a plastic remover tool (B) into the embossed locations to open a clearance.

CAUTION:

Do not press the remover tool farther in than necessary. Doing so may deform the battery pack

upper case.

ii.

Tilt the windshield cutter blade at an angle and cut the adhesive at the embossed locations.

CAUTION:

When cutting the adhesive, be careful to avoid scratching the battery pack coating to the maxi-

mum extent possible.

5. Remove the battery pack upper case.

WARNING:

To prevent electric shock, wear insulated protective gear.

CAUTION:

• Check that the adhesive is fully cut before removing. Use of excessive force during removal may

deform the battery pack upper case.

• When removing the battery pack upper case, be careful that cutting particles do not enter the

battery pack.

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