Tools and Supplies:

· Flat blade screw driver

· Scotch Bright Pad (or similar)

· Sewing Machine Oil

· Kerosene

· Toothpicks

 

Procedure:

1. Remove the dirt build up from the Upper and Lower Oiling Felts. Clean with kerosene and pad dry.

2. Polish the Commutator with a Scotch Bright Pad. Clean between the gaps with a toothpick.

3. Apply two drops of sewing machine oil to both the Upper and Lower Oiling Felts.

4. Lightly grease the upper and lower tips of the Motor shaft, as well as the bottom of the Ratchet.

 

 

 

Horn Basics

 

Problems and Solutions

Tuning Screw

Adjust with cover on.

Oiling

Oiling Felt

Two drops of           oil on upper felt

Commutator

Clean with Scotch Bright Pad and a toothpick

Motor & Ratchet

Grease Lightly

Grease Lightly

Oiling Felt

Two drops of           oil on lower felt

by Paul R. Modlin

 

Cover Screw

Problem: Reproduction screw allows cover to be over tightened.

Fix: Loosen screw or replace with original.

 

 

Tension Spring

Problem: The spring is too strong. The pressure of the spring will not allow the motor to turn freely.

Fix: Add an extra washer to drop the spring or slightly bend the spring to reduce the pressure.

 

 

Brush Spring

Problem: The spring is too strong. The friction of the brush on the commutator will not allow the motor to turn freely.

Or the opposite: The  spring tension is too light. The brushes are not making a good electrical contact.

Fix: Replace spring.

 

 

Horn Assembly

Horn

Ratchet

Motor Bracket

Cover Screw

Motor Cover

Motor & Motor Bracket

Diaphragm

Diaphragm Gasket

Flange Bolts

Horn Bell

Bracket

Adjustment Screw

Adjustment Bar Spring

Brush Spring Set

Dust Felt

Adjusting Bar

Upper Oiling Felt

Terminal Connectors

Lower Oiling Felt

Motor

Ratchet Nut

Washer

Ratchet

Lock Washer

Horn Screen

Paul R. Modlin

 

Lock Washer

Flange Nut

Diaphragm

Problem: Over restored. The paint is too thick, preventing  proper resonation of horn.

Fix: Remove paint and repaint sparingly.

 

 

Gasket

Problem: The gaskets are missing. There should be one on each side of the diaphragm.

Fix: Replace gaskets.

 

 

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