Checking the efficiency of the coupling relay

Checking the efficiency of the coupling relay

• Set the coupling relay on the test bench and power the bench surface negatively (alternatively connect the relay frame to the battery (-) terminal).
• Connect the positive terminal of the test bench or of the battery to the positive terminal of the short circuited relay with the starter pin.
• The prod of the coupling relay that actuates the starter control fork must be triggered; if not, change the electromagnet.

Checking the bush wear

• Check that the two bushes, the first one on the drive side support and the second on the collector side support are not excessively or unevenly worn.
• If necessary change them using special punches.

RE-ASSEMBLY

• Re-assemble the starter reversing the sequence followed for dis-assembly.
• Lubricate the components shown in the following figure with the products described.

1. a. Oil
2. b. Grease
3. c. Silicone grease