Skip to main content ↑ ↓
Topic: 39MT Starter installation  (Read 722 times) previous topic - next topic

39MT Starter installation

Well after two years of checking this and checking that I went ahead and installed a new Delco Remy 39MT starter.  I checked all the usual things, cleaned cables, removed ground post frame connection, added additional ground cables, and finally swapped the old 41MT for the new gear reduction unit.  Completely different operation.  Very pleased with how the new one works.  I was never convinced that I should have to turn on the boost to start the engine and it always had to be done to get it going in most instances.
2003 U320 4220 42' Tag Axle
"Babe The Big Blue Ox"
Motorcade #18069
🤔Mark and Angela Bumgarner 😎

Re: 39MT Starter installation

Reply #1 –
I'm contemplating doing the same. Should probably have the current starter checked out first.
Bill & Jan Velting
1998 U320 36'    2014 Xtreme facelift
build #5339  MC#17207
current toad: 2014 Cadillac SRX

Re: 39MT Starter installation

Reply #2 –
For those with Cummins engines, have you heard of the prelube starter?

Cummins QuickServe Online
1992 Foretravel Grand Villa
U225 SBID Build No. 4134
1986 Rockwood Driftwood
1968 S.I.A.T.A. Spring
1962 Studebaker Lark
1986 Honda VF700C
1983 Honda VF750C
Charlie, the Dog was broken out of jail 24 Oct 2023
N1RPN
AA1OH (H)e who must be obeyed.

Re: 39MT Starter installation

Reply #3 –
This may be the Prelube Oldtoolmaker was trying to link to:
Cummins QuickServe Online
97 U295 40, Build #5040, 6C8.3 325 HP
Oregon Continuous Traveler
Samsung Residential #RF20HFENBSR,
Xantrex SW2012, (3)AGM8D Hse, (2)AGM Grp24 Eng, Victron BMV-712, 1800w Solar 4 LG & 2 Sunpower
Extreme Full Body Pt w/hdlmps, new furn/floor, 4 down Lexus 2004 GX470 AWD curb weight 4,740 lbs
Prev: 1990 Barth, 10L 300 2 yrs; 91&92 Monaco Signature, 10 yrs, 10L C 300 &  6C8.3 300; 1997 ForeT 6C8.3 325 since May 2017.  Employed by Guaranty RV 14+ yrs.  Former VW New Car Dlr/Service Dlr, Sales Mgr, Rv Sales, and Service Adviser from 1968-2017
"Don't criticize what you can't understand" Bob Dylan

Re: 39MT Starter installation

Reply #4 –
Most big stationary engines have a prelube system installed,many have a post lube system.It works before starting but has nothing
to do with the actual starter.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: 39MT Starter installation

Reply #5 –
One of the first things I did on my coach was put a prelube system on. The  pump I bought is smaller than I like and have been looking for a pump with more gallon per minute.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: 39MT Starter installation

Reply #6 –
Please stick with the original topic:  39MT Starter installation

Feel free to start a new thread on Prelubers in the Tech Talk section.

This will make it much easier for anyone searching for that topic in the future.

Thanks.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: 39MT Starter installation

Reply #7 –
Quote from: wolfe10 –
Please stick with the original topic:  39MT Starter installation

Feel free to start a new thread on Prelubers in the Tech Talk section.

This will make it much easier for anyone searching for that topic in the future.

Thanks.
Sorry Brett.  I was only trying to point out that if you were changing out your starter there is a factory supplied factory engineered upgrade starter that seamlessly adds the benefit of engine oil pressure before you begin turning your engine.
1992 Foretravel Grand Villa
U225 SBID Build No. 4134
1986 Rockwood Driftwood
1968 S.I.A.T.A. Spring
1962 Studebaker Lark
1986 Honda VF700C
1983 Honda VF750C
Charlie, the Dog was broken out of jail 24 Oct 2023
N1RPN
AA1OH (H)e who must be obeyed.

Re: 39MT Starter installation

Reply #8 –
Art,

No problem. Kind of a tough one, as you say, this IS a replacement for a starter so good to mention here.

But, suspect the topic, as happened before, will blossom into a wide-ranging discussion of pre-lubers for a variety of engines.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: 39MT Starter installation

Reply #9 –
To add to the hijack I understand that an m11 does not start until the oil pressure comes up?  Does Cummins offer a preluber for a m11?  I replaced my starter with the Delco as preventative maintenance but was not aware of a preluber or its need?
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: 39MT Starter installation

Reply #10 –
Will do some research but I have a hunch the prelube is seperate from the starter,there are some aftermarket ones out there.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: 39MT Starter installation

Reply #11 –
Quote from: John44 –
Will do some research but I have a hunch the prelube is separate from the starter,there are some aftermarket ones out there.

Cummins advertises the starter for equipment that sits the better part of a year before being used again.  There's a couple of additional oil lines to be run to make it all work.

From the Cummins page:

"Simple Installation. Installing the Cummins Prelub system is as easy as changing a starter. Simply remove your customer's conventional starter and install the Prelub starter. Attach two hoses, a pressure switch, a switch/timer assembly, a simple wiring harness and you're done. Only three basic Prelub models fit virtually all Cummins, Caterpillar, Detroit Diesel and other heavy duty diesel applications. Air start applications can also be accommodated."
1992 Foretravel Grand Villa
U225 SBID Build No. 4134
1986 Rockwood Driftwood
1968 S.I.A.T.A. Spring
1962 Studebaker Lark
1986 Honda VF700C
1983 Honda VF750C
Charlie, the Dog was broken out of jail 24 Oct 2023
N1RPN
AA1OH (H)e who must be obeyed.