My wiper use to park in the same spot (left) we've been out and have gotten our butts kicked a few times and heave taken a few sheets of water over the bow :shock: Now the wiper parks as soon as the power is killed which could be in the middle of the windshield.
I think Pacific uses a run of the mill AFI marine style wiper. Anyone happen to know what would cause that??? or how to attempt checking/repairing it???
Wiper
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JETTYWOLF
- Contributor/donator/Location Nazi
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- Location: Tree-hugger, USA...they call it FLA.
Re: Wiper
Alloy,
Maybe it "skipped" on the spline,if ya know what I mean. And now the wiper blade arm needs to be taken off and re-positioned a tad.
I can just image what a good azz handing can do to a fragile wiper arm.
Heck just going down the road and at the washboard boat ramp, both of the nuts holding on my trailer lights backed off and I saw the lights hanging loose on the two bolt/nuts each. Saw it just in time.
Maybe it "skipped" on the spline,if ya know what I mean. And now the wiper blade arm needs to be taken off and re-positioned a tad.
I can just image what a good azz handing can do to a fragile wiper arm.
Heck just going down the road and at the washboard boat ramp, both of the nuts holding on my trailer lights backed off and I saw the lights hanging loose on the two bolt/nuts each. Saw it just in time.
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Chaps
- Donator '09
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- Joined: Sun Jan 13, 2008 12:19 am
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- Your location: Seattle, WA
- Location: Seattle, WA
Re: Wiper
Likely one of the wires has come loose on the unit or the internal switch contact is buggered up. There is supposed to be an "always hot" wire running to the internal switch on the motor.
1987 24' LaConner pilothouse workboat, 225 Suzuki
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Re: Wiper
Alloy, Check the wiring
"...The motor shaft drives a worm reduction gear. The worm wheel is connected to the wiper arms thru linkages. A set of sliding contacts is embedded in the worm wheel inside the wiper gearbox housing. (The sliding wiper contacts have been shown pictorially in the diagram as a cam-operated contact.)
The steering column-mounted wiper switch has two sets of contacts.The first selects Low or Hi speed by feeding power to either 53 (the Low speed brush) or 53b (the Hi speed brush).
The second set of switch contacts controls the "parking" function. The drawing shows the wipers already in the "park" position. The cam contact (53a to 31b) is open. No current flows to the motor.
Now, imagine that the wipers had been running and the driver turned the switch to the OFF or PARK position while the wipers were midway across the windshield. The cam contacts 53a to 31b would now be closed, permitting power to flow from the fuse to the Low speed motor connection (53).
The cam contact thus keeps the motor running (at Low speed) even after the wiper switch is turned OFF. When the wipers are approaching the "park" position, the cam contacts transfer. This action cuts off power to the Low speed terminal and the motor begins to coast. The motor has a lot of inertia and would probably coast right past the "park" position and go round again!
To accurately stop the wipers every time, another contact is used on the cam switch. When the cam switch transfers, 31b is connected to 31 (as shown in the drawing). If you follow the path, you will see that motor terminal 53 is now short-circuited to motor terminal 31.
The motor (which was still spinning) now acts as a generator.
(The permanent magnet keeps field magnetism supplied.)
The short-circuited brushes produce a very high current in the armature which creates a strong counter-torque. The result is that the motor is brought to an almost instantaneous stop, accurately parking the wipers precisely where the cam dictated. The process is called "Dynamic Braking".
The drawing shows only a typical wiring setup. There were several variations by year but the principles remained the same. Wire 31b was renamed 53e on later cars which had the steering column wiper switch. Switch wiring for intermittent wiper action is not shown here.
On all 2-speed wiper motors, the wires which actually go to the brushes internally are colored Green for Low speed and Red for High speed...."
"...The motor shaft drives a worm reduction gear. The worm wheel is connected to the wiper arms thru linkages. A set of sliding contacts is embedded in the worm wheel inside the wiper gearbox housing. (The sliding wiper contacts have been shown pictorially in the diagram as a cam-operated contact.)
The steering column-mounted wiper switch has two sets of contacts.The first selects Low or Hi speed by feeding power to either 53 (the Low speed brush) or 53b (the Hi speed brush).
The second set of switch contacts controls the "parking" function. The drawing shows the wipers already in the "park" position. The cam contact (53a to 31b) is open. No current flows to the motor.
Now, imagine that the wipers had been running and the driver turned the switch to the OFF or PARK position while the wipers were midway across the windshield. The cam contacts 53a to 31b would now be closed, permitting power to flow from the fuse to the Low speed motor connection (53).
The cam contact thus keeps the motor running (at Low speed) even after the wiper switch is turned OFF. When the wipers are approaching the "park" position, the cam contacts transfer. This action cuts off power to the Low speed terminal and the motor begins to coast. The motor has a lot of inertia and would probably coast right past the "park" position and go round again!
To accurately stop the wipers every time, another contact is used on the cam switch. When the cam switch transfers, 31b is connected to 31 (as shown in the drawing). If you follow the path, you will see that motor terminal 53 is now short-circuited to motor terminal 31.
The motor (which was still spinning) now acts as a generator.
(The permanent magnet keeps field magnetism supplied.)
The short-circuited brushes produce a very high current in the armature which creates a strong counter-torque. The result is that the motor is brought to an almost instantaneous stop, accurately parking the wipers precisely where the cam dictated. The process is called "Dynamic Braking".
The drawing shows only a typical wiring setup. There were several variations by year but the principles remained the same. Wire 31b was renamed 53e on later cars which had the steering column wiper switch. Switch wiring for intermittent wiper action is not shown here.
On all 2-speed wiper motors, the wires which actually go to the brushes internally are colored Green for Low speed and Red for High speed...."
