Help me bench test a wiper motor

[jaahmez@hotmail.com]

Hi all,

If I use a jump pack (12V)to bench test my wiper motors, which are 1984 vintage and have a single power connection, am I supposed to go positive to the connection and ground to anywhere on the motor's steel casing?

I've got a three motor set up, with three separate toggles, and none work. The fuse(s) and line(s) in are ok so I took them down to bench test them.

Thanks

James

[jefflaw35]

go striaght to the motor wire. If it works then you know the issue is inline somewhere and not the motor. If its in the wiring then a multimeter should help you find where the problem is.

[Big D]

If it is a one wire connection then positive to the terminal and negative to the body. In such a case the windshield frame would act as ground so look for the ground connection to the windshield frame and ensure there is continuity.

[kevin babineau]

most times you can take those apart and sand the armature put some greese on the bushing and they will live again.. i usuaul ground the mounting ear to test but i usually clean them up first then test them. it only takes a minute or two to lightly sand the armature and fight with the brushes

[kevin babineau]

opps but i agree test for power at the motor.

[jaahmez@hotmail.com]

Thanks for the help to all. Corroded ground(s), a little clean and sand and all three work great.

Boat's been on land for 2 seasons while I restored it in my spare time. Trying to knock out a few more items before the tractor trailer trip to the travel lift next Thursday the 16th. This forum's been a big help.

James

[jefflaw35]

sweet

[larryeddington]

+++ on cleaning the armature, most motors respond to what I call TLC (tender loving care)

[jefflaw35]

just dont stoke to hard