Mitsubishi 380. Manual — part 302

If the parking brake is faulty, parking brake effort will
become insufficient. The cause may be a malfunc-
tion of parking brake parts or the parking brake pedal
being out of adjustment.

TROUBLESHOOTING STRATEGY

M1361003800290

Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will be sure that you
have exhausted most of the possible ways to find a
parking brakes fault.
1. Gather Information from the customer.

2. Verify that the condition described by the

customer exists.

3. Find the malfunction by following the Symptom

Chart.

4. Verify malfunction is eliminated.

SYMPTOM CHART

M1361004100302

AC306017

AC206222

PARKING BRAKE LEVER

REAR PARKING BRAKE CABLE

FRONT PARKING BRAKE CABLE

SYMPTOM

INSPECTION PROCEDURE

REFERENCE PAGE

Brake drag

−

Refer to GROUP 35A, Basic Brake
System Diagnosis

− Symptom

Chart

P.35A-6

Insufficient parking brake function

P.36-3

ON-VEHICLE SERVICE

PARKING BRAKES

36-3

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Insufficient Parking Brake Function

DIAGNOSIS

STEP 1. Check the excessive parking brake lever
stroke.
Refer to

P.36-3

Q: Is the parking brake lever stroke adjusted

properly?
YES :

Go to Step 2.

NO :

Adjust the parking brake lever stroke or
check the parking brake cable routing. Then
go to Step 5.

STEP 2. Check the parking brake cable for
sticking.

Q: Is the parking brake cable stuck?

YES :

Replace the cable. Then go to Step 5.

NO :

Go to Step 3.

STEP 3. Check the brake lining and brake drum
for wear.
Refer to

P.36-11

Q: Is the brake lining thickness or brake drum inside

diameter outside of specification?
YES :

Replace the rear brake shoe assembly or

rear brake disc (Refer to

P.36-8

). Then go to

Step 5.

NO :

Go to Step 4.

STEP 4. Check for oil, water, etc., on the lining
contact surfaces.

Q: Is oil, water, etc., on the lining contact surface?

YES :

Replace the part and determine and repair

source/cause of foreign material. Then go to
Step 5.

NO :

Carry out the parking brake lining seating
(Refer to

P.36-5

) and then go to Step 5.

STEP 5. Retest the system.

Q: Is the malfunction eliminated?

YES :

The procedure is complete.

NO :

Recheck from Step 1.

ON-VEHICLE SERVICE

PARKING BRAKE LEVER STROKE CHECK AND
ADJUSTMENT

M1361000900362

1. Pull the parking brake lever with a force of approximately

200 N (45 pounds) and count the number of notches.

Standard value: 5

− 7 notches

2. If the parking brake lever stroke is not within the standard

value, adjust as described below.

(1) Release the parking brake.

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Mitsubishi 380. Manual — part 302

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