Alternator Dissassembly, Bearings - L3940

fc1

Active member

Equipment
L3940
Apr 17, 2024
60
122
33
Michigan
Hello friends,
The bearings of the alternator of my L3940 (2013, ~700hr, HST) became prone to squealing on cold starts, so I've removed the alternator from the tractor and partially disassembled it. My plan would be to install new bearings after I measure and order them.

The nose bearing should be pretty simple; I can press it out. The rear bearing has no access; do I press on the shaft and then use a puller to get the bearing off (assuming the bearing stays on the shaft)? Will the brushed surfaces pose a problem?
20260217_174959.jpg

20260217_181449.jpg


Some sources suggest there are three bearings... sure looks like two to me. Am I missing something?

Thanks in advance!
 

ruger1980

Active member

Equipment
L4310 w/La682, L225
Oct 25, 2020
549
230
43
CNY
Download the WSM from the Kubotabooks website. It has all the disassembly/assembly instructions in it.
 
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