L3400 will not start, question

From scratch farms

New member

Equipment
L3400
Sep 5, 2014
1
0
0
Sulphur, louisiana, calcasieu
When I try to start the tractor, I just get an electrical buzz, this has been an intermittent problem, when it happens, in the past I have opened the hood, and tapped on the wires and box mounted just above the battery, the box appears to me to house a series of relays, anyway, after tapping on the box, at least until now, this seemed to cure the problem and the tractor would start. My guess is that I need to replace one of the relays, help, thanks
 

Jim L.

Active member
Jun 18, 2014
811
86
28
Texas
Calcasieu, "eagle cry".

Sounds like a relay or a bad connection.

Be nice to have a wiring diagram. And a Volt-Ohm Meter. Maybe a helper too.

Diagnose by metering one connection at a time. Move the wires around to find the loose connection.

Check relay sockets for proper connections.

Test the relays by themselves, or replace (expensive way).

plan on taking awhile since the problem will come and go.

Sorry it ain't easy.
 

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
28,286
4,851
113
Sandpoint, ID
Doesn't look like you have a starter relay but you do have an OPC timer and that is most likely your problem spot.

 

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