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INTERMEDIATE GEAR

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gajeepguy View Drop Down
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    Posted: 16 Feb. 2012 at 11:44am
Hello, I have an intermediate gear from a CJ-2A that is marked 18-5-7.  The only one that I can find tp replace it is marked 18-5-9.  Are they interchangeable and what, if anything, is the difference?  Thanks,

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Post Options Post Options   Thanks (0) Thanks(0)   Quote samcj2a Quote  Post ReplyReply Direct Link To This Post Posted: 16 Feb. 2012 at 4:32pm
I am not familiar with the term, "intermediate gear" for the CJ-2A.  Perhaps you can identify which gear you mean by referring to the parts figures, below.  I speculate that you mean second gear, but knowing for sure might help someone answer your question.




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1946 CJ2A   15292 ACM    6678

1947 CJ2A 122031 ACM 111989

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Post Options Post Options   Thanks (0) Thanks(0)   Quote gajeepguy Quote  Post ReplyReply Direct Link To This Post Posted: 16 Feb. 2012 at 8:27pm
Sorry, the intermediate gear is in the transfer case.  It's the big one in the middle with two sets of teeth on it.  I hope this clears it up.  Thanks.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote rocketeer Quote  Post ReplyReply Direct Link To This Post Posted: 16 Feb. 2012 at 8:51pm
They are not interchangeable.

18-5-7 (1946-1954)
----------------------
34 teeth x 20deg x 21 teeth

18-5-9 (1955-1971)
----------------------
39 teeth x 20deg x 18 teeth

Larry
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Post Options Post Options   Thanks (0) Thanks(0)   Quote gajeepguy Quote  Post ReplyReply Direct Link To This Post Posted: 16 Feb. 2012 at 10:02pm
OK, thank you very much.  I'll keep looking for the right one.  Thanks again.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote CW48 Quote  Post ReplyReply Direct Link To This Post Posted: 17 Feb. 2012 at 10:27am
You should also check your intermediate shaft size..is it 3/4 inch, 1 1/8 inch or 1 1/4 inch.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tumbleweed Quote  Post ReplyReply Direct Link To This Post Posted: 17 Feb. 2012 at 11:13am
Go to the Novac web site I think this will help with gear numbers, etc.
 
George
 

The Novak Guide to
Dana 18 & 20 Gears Interchange 1941-1979

A strong attempt has been made to condense a tremendous amount of information into a coherent table, below. This chart's primary purpose is to assist individuals with interchange and compatibility information. All Dana 18 / 20 gears that are not spur cut teeth are cut on a ~30 degree, left-hand helix.

Dana Model Pressure angle, in degrees Drive Gear: Dana & Jeep #'s Gear teeth x Spline count Intermediate Gear: Dana & Jeep #'s Gear teeth counts Front Output Gear Gear teeth count Front Sliding Gear: Dana & Jeep #'s Gear teeth count Rear Sliding Gear: Dana & Jeep #'s Gear teeth count With Transmissions Idler Shaft Diameter Jeeps Years Low Ratio
18 20 18-8-7,
A-1510
27t x 6 18-5-1,
A-999
18-8-2,
A-989
27t 18-8-1,
A-988
n/a T84 3/4" MB, GPW 41-45 1.97
18 20 18-8-19,
937339, (a)
26t x 6 18-5-7,
642189
34t x 21t 18-8-18,
A15044
26t 18-8-17,
A15045
39t n/a T90 1-1/8" All. CJ3B before s/n 541-2506. Military M38 & M38A1 46-54 2.46
18 20 18-8-23,
809297
29t x 6 18-5-9,
809293
39t x 18t 18-8-24,
809291
29t 18-8-22,
809290
33t n/a T90, T86 1-1/4" CJ, Early Style Pickups & Wagons. Four cylinder to '71, V6 to '68. Both new & old body style built between '62-64. CJ3B built after s/n 541-2506. 55-71 2.46
18 20 18-8-50,
947382
29t x 10 18-5-9,
809293
39t x 18t 18-8-24,
809291
29t 18-8-22
809290
33t n/a T14 1-1/4" CJ with Buick V6. 68-71 2.46
20 20 18-8-31,
937339, (a)
26t x 6 18-5-10,
933736
34t x 20t 18-8-18,
A15044
26t 18-8-28,
933735
31t 18-8-26,
933742
31t T98, T18, T90 1-1/4" Late style Kaiser J series Pickups & Wagons. Also '76-'79 CJ's with T18 62-79 2.03
20 17.5 18-8-46,
946574, (b)
26t x 6 18-5-16,
946786
34t x 20t 18-8-28,
933735
26t 18-8-28,
933735
31t 18-8-26,
933742
31t T18, T15, T89, T98 1-1/4" Late style Kaiser J series Pickups & Wagons. Jeepster 66-79 2.03
20 20 18-8-40,
940472
26t x 15 18-5-10,
933736
34t x 20t 18-8-18,
A15044
26t 18-8-28,
933735
31t 18-8-26,
933742
31t TH400 1-1/4" Late style Kaiser J series Pickups & Wagons 64-79 2.03
20 17.5 18-8-43,
946785
26t x 15 18-5-16,
946786
34t x 20t 18-8-44,
946784
26t 18-8-28,
933735
31t 18-8-26,
933742
31t TH400 1-1/4" Jeepster 66-72 2.03
20 17.5 18-8-49,
947339
26t x 10 18-5-16,
946786
34t x 20t 18-8-44,
946784
26t 18-8-28,
933735
31t 18-8-26,
933742
31t T14 1-1/4" Jeepster, CJ 67-74 2.03
20 17.5 18-8-55,
5354506, (b)
26t x 6 18-5-16,
946786
34t x 20t 18-8-44,
946784
26t 18-8-28,
933736
31t 18-8-26,
933742
31t T150 1-1/4" CJ 76-79 2.03
20 17.5 18-8-56 26t x 23 18-5-16,
946787
34t x 20t 18-8-44,
946784
26t 18-8-28,
933737
31t 18-8-26,
933742
31t TF727, 904, 909 1-1/4" IH Scout -79 2.03
20 20 18-8-33 29t x 6 18-5-9,
809293
39t x 18t 18-8-24,
809291
29t 18-8-35 33t 18-8-37 (c)
33t 1-1/4" Bronco 66-72 2.46
20 18-8-24 29t x 6 18-5-21 39t x 18t 18-8-24,
809291
29t 18-8-57 33t 18-8-58 33t 1-1/4" Bronco 73-74 2.46
20 18-8-64 29t x 6 18-5-21 39t x 18t 18-8-24,
809291
29t 18-8-66 33t 18-8-65 33t 1-1/4" Bronco 75-77 2.46
a. Yes
b. Special seal area machined into the front face of gear for T150. Interchanges when not used with T-150.
Intermediate gear bores are identical for 1-1/8" and 1-1/4" applications. c. The Bronco gear used for Jeep Dana 20, 2.46:1 conversions
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tumbleweed Quote  Post ReplyReply Direct Link To This Post Posted: 17 Feb. 2012 at 11:30am
Ooooops - I sent the transfer case info - Sorry - Well, when you do get to the transfer case this will help.
George
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Post Options Post Options   Thanks (0) Thanks(0)   Quote gajeepguy Quote  Post ReplyReply Direct Link To This Post Posted: 17 Feb. 2012 at 12:06pm
Tumbleweed, this is perfect,  Just what I needed. Thanks,

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