original it is a eisseman gv 4
I have what looks in appearance to be a 5f3908 Cat replacement mag on the tractor ,but the breaker assembly 6f5856 , which is no longer available from Cat , looks different in the parts book from what I see in the mag on the tractor . I am wondering if there was a Cat change in the 5f3908 mag or breaker assembly at some point. The end cap is different from what is shown in the parts book with no access cover in the lower part of the cap to get access to the points without removing the entire cap .
The same 5f3908 mag according to the parts books I have was offered as a replacement on tractors 15, 20 and 25 .
Has anyone have a parts source for old Ignition breaker points and condenser
s for old magnetos ????
I have removed the mag and cleaned the points to temporary keep the tractor running .but the fiber pad that contacts the cam is deteriorating ,so this is a temporary solution to replacing the breaker points. no luck finding a replacement with Napa Parts
Old Magnet ,Do you have any information on the 5f3908 mag or possible updates to this mag ?
I don't have the parts books for the 15. Are you sure it has the Eisemann GV-4 magneto? If so there is/are some parts interchange ability with similar mags. Key is to ID what you have.
I don't have the parts books for the 15. Are you sure it has the Eisemann GV-4 magneto? If so there is/are some parts interchange ability with similar mags. Key is to ID what you have.
I don't have the parts books for the 15. Are you sure it has the Eisemann GV-4 magneto? If so there is/are some parts interchange ability with similar mags. Key is to ID what you have.
[attachment=37903]mag2.jpg[/attachment][attachment=37902]magneto info 1.jpg[/attachment]
I can post if you need more info.
Frank
I'm out of my league here but from what I read the 5F3908 was a later replacement for the GV-4 and appears to be an American Bosch # MJB 4A 102 magneto. Maybe that explains the difference.
Don't see him post here much any more but "naylorbros" would probably know.
here is a picture from the Cat 15 parts book showing this replacement magneto 5f3908 never up loaded a pic here before hope it goes through
Our channel highlights machines from the earliest Holt and Best track-type tractors, equipment from the start of Caterpillar in 1925, up to units built in the mid-1960s.
Chapter Nineteen
| 5875 STH GIPPSLAND HWY, NYORAChapter Thirty
| Booleroo Centre, 54 Arthur St, Booleroo Centre SA 5482, AustraliaChapter Fifteen
| Tulare, CaliforniaChapter Nineteen
| 34 Henty Hwy, Warracknabeal
Antique Caterpillar
Machinery Owners Club
1115 Madison St NE # 1117
Salem, OR 97301
Terms & Privacy
Website developed by
AdCo
"I also joined a year ago. had been on here a couple of times as a non-member and found the info very helpful so I got a one year subscription (not very expensive at all) to try it out. I really like all the resources on here so I just got a three year. I think its a very small price for what you can get out of this site."
-Jason N
