Cat 3128 Injector setting

bighh7

Seaman
Joined
Sep 13, 2011
Messages
53
Ive got twin 3128 in a boat and Ive been told the injectors need setting .How difficult is it to do this and what tools are required ?
 

QC

Supreme Mariner
Joined
Mar 22, 2005
Messages
22,783
Re: Cat 3128 Injector setting

Can you confirm the model number? CAT never had a 3128. There are 3208s, and 3126's, and they are VERY different.
 

QC

Supreme Mariner
Joined
Mar 22, 2005
Messages
22,783
Re: Cat 3128 Injector setting

Roger, I thought so, but was too close to the others.

Well . . . here's the deal. I believe all 3126s have Hydraulic Electronic Unit Injectors (HEUI). Here is a good link if you really want to understand them: http://dieselclass.com/Fuels Files/HEUI 1-08.pdf

They really do not have any user capable adjustments or "setting". What is it that is causing your concern? Is there anything bad happening? Or are you simply concerned about maintenance?
 

Howard Sterndrive

Rear Admiral
Joined
Nov 5, 2008
Messages
4,603
Re: Cat 3128 Injector setting

there was a 3126 mechanical marine engine - basically a bored out 3116
and it was all mechanical linkage - need a dealer to do the snychronization and timing and fuel setting.. nothing DIY about it. Tools would run you about $4000 and best to get some professional hands-on training on their use.
Fly me to the Cayman Islands around December...and I'll bring the tooling. :)
need the serial number prefix to say for sure what version of 3126 it is
 
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