|
03-06-2020, 04:01
|
#1
|
Registered User
Join Date: Sep 2019
Location: Hawkesbury River, NSW, Australia
Boat: 1912 Huon Pine Timber Boat
Posts: 44
|
Perkins 4.107
Hi all,
I have taken a photo of the part of the engine, that I do not know anything about. I am hoping that with your guidance, it may lead me to making an informed decision on the repair or replacement.
The +ve Cable from the 12v Battery connects directly to it.
The reason for highlighting this, is that when the motor starts within 2-3 secs, everything seems fine. However, beyond the 3 secs of cranking the engine, I see smoke rising from it.
I can't quite make out precisely where the smoke is coming from because the ignition key is about 4.0' away. It has happened less than 6 times already and it hasn't affected anything else on the operation of the engine (so far).
Any words of wisdom highly appreciated.
|
|
|
03-06-2020, 04:18
|
#2
|
Moderator and Certifiable Refitter
Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 20,242
|
Re: Perkins 4.107
It looks like the starter motor solenoid. It switches the battery power to the starter motor when you hit the key start. The terminals and the contacts inside carry the full starter motor current.
There is a lot of corrosion on these terminals and they really need to be cleaned up. The smoke might be coming from the terminals.
The contacts inside might also be burnt / corroded and the smoke could be doing from them.
The corrosion causes an increased resistance which in turn creates heat when a large current is passed though the terminals and internal contacts.
A new one might in order .
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
|
|
|
03-06-2020, 04:45
|
#3
|
Registered User
Join Date: Jun 2019
Posts: 2,604
|
Re: Perkins 4.107
Pickup a Cole Hersee starter solenoid (Intermittent duty is fine). Simple DIY replacement. Just make sure to disconnect negative battery cable as Step 1. Here's one from Amazon for about $21. Any decent chandlery will have it too for about the same, maybe less. Or any auto parts store will have one, though they will annoy you with questions about year/model/make of your car.
https://www.amazon.com/Cole-Hersee-2...1184419&sr=8-9
|
|
|
03-06-2020, 05:11
|
#4
|
Moderator and Certifiable Refitter
Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 20,242
|
Re: Perkins 4.107
Or for the Aussie based OP
https://www.ebay.com.au/itm/CONTINUO...4383.l4275.c10
This would be a good time to check the quality and size of the existing battery cables / terminals as well!
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
|
|
|
03-06-2020, 15:44
|
#5
|
Registered User
Join Date: Sep 2019
Location: Hawkesbury River, NSW, Australia
Boat: 1912 Huon Pine Timber Boat
Posts: 44
|
Re: Perkins 4.107
Thank you EVERYONE, it is so refreshing to find helpful guru's out there prepared to impart their knowledge.
So the action plan is to 1) replace the Starter Motor Solenoid and 2) check the wires leading to the Solenoid leading from the battery.
I'm assuming that checking the wires involves making sure the wires are not frayed, and the correct size?
And checking for the quality of the wire would be best achieved with a multimeter checking for resistance?
As for the size, I guess delving into google and/or the solenoid manual if the right wire size is mentioned for the desired amps. The batteries and engine are only about 2' apart.
|
|
|
03-06-2020, 16:26
|
#6
|
Registered User
Join Date: Feb 2016
Location: Canada
Boat: T37
Posts: 2,336
|
Re: Perkins 4.107
I would just plan on replacing that cable. Open ended terminals, chances are that corrosion goes 6” plus down inside the cable sheath. Get some quality marine cable, closed terminals and waterproof shrink tube, it’ll last forever.
|
|
|
03-06-2020, 16:47
|
#7
|
Senior Cruiser
Join Date: May 2013
Location: Oregon to Alaska
Boat: Wheeler Shipyard 83' ex USCG
Posts: 3,494
|
Re: Perkins 4.107
When you buy your solenoid, there's a similar model the has a button where the bump is in the middle of the top. It allows you the option of starting or jogging the engine from the engineroom. Nice for adjusting the valves.
|
|
|
03-06-2020, 17:22
|
#8
|
Registered User
Join Date: Jun 2019
Posts: 2,604
|
Re: Perkins 4.107
Quote:
Originally Posted by Lepke
When you buy your solenoid, there's a similar model the has a button where the bump is in the middle of the top. It allows you the option of starting or jogging the engine from the engineroom. Nice for adjusting the valves.
|
I did not know this! Thanks Lepke -
Peter
|
|
|
04-06-2020, 02:29
|
#9
|
Moderator and Certifiable Refitter
Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 20,242
|
Re: Perkins 4.107
Quote:
Originally Posted by Kokonut
..............
And checking for the quality of the wire would be best achieved with a multimeter checking for resistance?
As for the size, I guess delving into google and/or the solenoid manual if the right wire size is mentioned for the desired amps. The batteries and engine are only about 2' apart.
|
No, you can't use multimeter to measure the resistance of these heavy cables; the meter is simply not accurate enough to measure battery cables where the resistance will be in the order of milliohms. Your multimeter will only be accurate to a few ohms (on a good day). You can use a special low ohm (conductance) meter but I sure you don't have access to one of these.
Given the age of the old cables and going by the picture you posted, I agree with rbk, get new ones. As you probably don't have the tooling to make them, simply buy pre-made ones from your local chandlery. I suggest a wire size 50mm2 but if this is unavailable locally, try for 70mm2 which will be overkill but bigger is better
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
|
|
|
04-06-2020, 04:20
|
#10
|
Registered User
Join Date: Jan 2020
Posts: 2
|
Re: Perkins 4.107
Anyone know a source/part number for the solenoid with the button??
Thanks
|
|
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Rate This Thread |
Linear Mode
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
Similar Threads
|
Thread |
Thread Starter |
Forum |
Replies |
Last Post |
Perkins 4-107 - Loud Knocking
|
seafarer74 |
Engines and Propulsion Systems |
5 |
01-06-2021 16:26 |
Perkins 4-107 ?
|
Buddy_Y |
Engines and Propulsion Systems |
21 |
10-03-2011 04:56 |
Perkins 4-107
|
BluesTraveler |
Engines and Propulsion Systems |
5 |
23-09-2008 09:07 |
|
Advertise Here
Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
Vendor Spotlight |
|
|
|