Cateye EC-3700 service manual 1Unusual Noise Continuous and Increasing, EC-1200 EC-1600 EC-3600

Applicable Models: EC-1200 EC-1600 EC-3600 EC-3700

T-7-1Unusual Noise (Continuous and Increasing)

Check Method of Causes	Repair Method	Explanation Figures
The noise generating source will be different depending on the
cases whether it is of continuous noise or periodical noise (several		Chain
times per rotation of pedal).

[1] Noise is continuous and increasing.

1. Remove the frame cover. (See the Sections D-1 & D-2 "Removing the Frame Covers.")

Apply grease to the following points. (Figs 1 & 2)

· Chain

· Inner surface of the timing belt (mating surface with the plastic pulley)

2.	Check if the derailleur has been worn out. (Fig. 1)	When it has been worn out, replace it with a brand
		new derailleur set. (See the Section MS-6 "Replacing
		the Derailleur Set.")
3.	Check if the idler has been worn out. (Fig. 2)	When it has been worn out, replace it with a brand
		new idler set. (See the Section MS-7 "Replacing the
		Idler Set.")
4.	Check if the plain belt has been deviated in position, thus	When the plain belt is shifted and is going to be
	causing friction.	damaged, replace both the workload unit and the	Derailleur
		flywheel set with new ones.
			Fig. 1
			Idler
			Idler Set
			Plain Belt

Timing Belt

Plastic Pulley

Fig. 2 Fig. 3

Cateye Ergociser Series 1000 Service Manual

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T-7-1Unusual Noise