22 · Diagnostics

Handbrake not efficient

Fault diagnosisHandbrake not efficient

HANDBRAKE NOT EFFICIENT

When the handbrake is operated, the rear wheels are not locked.

(A correctly-operating handbrake, when fully applied, prevents the vehicle from starting off from a standstill. )

1	CHECK HANDBRAKE ADJUSTMENT	All OK	Problems met	Operation
		Results of the tests
	Check that the handbrake is adjusted correctly: Op. 3380A04	Continue to Step 2	Incorrect adjustment	Re-adjust the handbrake correctly Op. 3380A04
2	CHECK CONTROL CABLES	All OK	Problems met	Operation
	Check: that the handbrake cables are attached correctly condition of the cables	Continue to Step 3	Cable attachments loose	Re-attach correctly
			Cable damaged or broken	Replace the cable Op. 3380A30
			Linkage damage or broken	Replace the linkage Op. 3380A38
3	REAR DRUM CYLINDERS CHECK	All OK	Problems met	Operation
	Check the condition of the rear brake cylinders	Continue to Step 4	Shoe control cylinders worn or seized	Replace the cylinders Op. 3320B20
4	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Search for the fault starting from another symptom'

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