LMM: lmm cam gear install

770JOHNNYW

New member
Sep 16, 2009
791
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Gainesville ,Ga
whats the deal with the 2 piece cam gear on the lmm? it has a spring type ring in between the 2 gears. what is the correct way this goes back on?:confused:
 

duratothemax

<--- slippery roads
Aug 28, 2006
7,139
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Wyoming
stick a screwdriver or something through it and "pry" so the two halves have the teeth lining up.

Honestly, I find it annoying. When building engines (if its an LBZ/LMM), I just replace the stupid two-piece cam gear with the normal cam gear from an 01-05 dmax.
 

770JOHNNYW

New member
Sep 16, 2009
791
0
0
Gainesville ,Ga
stick a screwdriver or something through it and "pry" so the two halves have the teeth lining up.

Honestly, I find it annoying. When building engines (if its an LBZ/LMM), I just replace the stupid two-piece cam gear with the normal cam gear from an 01-05 dmax.

ok thanks man...thats what i did it just seems a little loose in there ill see if i cant grab another tooth and get some tension on it.
 

RKTMech

Idiot with a wrench
Aug 18, 2008
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The Norco's
You have to tension it enough to line up the 8x1.25 threaded hole and put a bolt in it to hold the tension till you get it back on the engine. Its more than just a couple teeth of tension to line up those holes.
 

JoshH

Daggum farm truck
Staff member
Vendor/Sponsor
Feb 14, 2007
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Texas!!!
As I recall, if you take off the reluctor wheel first, you can see the bolt hole Robert is talking about. You can put a bolt in it before you remove it from the cam, and it won't fall apart.
 

McRat

Diesel Hotrodder
Aug 2, 2006
11,249
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Norco CA
www.mcratracing.com
Not sure, but I think it's to reduce noise. It takes the backlash out of the gears. It might improve emissions control by keeping the cam timing more fixed. Another thought is it might improve the cam pin life by reducing impact loading.
 

JDPlowboy

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Feb 6, 2011
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72a144097023dd022fedac767a9ba98f.jpg


Looks like this
 

Awenta

Active member
Sep 28, 2014
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CT
I hope you've got it installed since then haha

Sent from my SM-N910V using Tapatalk
 

Harbin_22

Active member
Dec 4, 2010
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Southern Indiana
Not sure if it was a bad idea, but we left the thin piece off my gear and haven't had any trouble for the last 8k or so. I didn't notice any difference in noise