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post #1 of 7 Old 01-16-2010, 04:48 PM Thread Starter
jefflacy
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need help with grinding noise

have a 85 cj7 with a t156 and a dana 300 and in 1 2 3 there is a grinding comeing from the tranny or t case dont really hear it in 4th but when down shifting it is really loud

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post #2 of 7 Old 01-16-2010, 06:29 PM
semikrazy
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Does it do it while your shifting or with the clutch in? How about in 4wd?
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post #3 of 7 Old 01-16-2010, 07:37 PM
Cutlass327
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Being 4th is direct drive, where input and output shafts are locked together, I would almost have to say it is in the bearings for the cluster shaft. I can't remember the technical name for the shaft...

Rick

1978 CJ5 5.0HO/T177/D300, '86 D30/D44 WT axles, 'glass body, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy

http://www.jeepforum.com/forum/f8/ri...8-cj5-1223197/
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post #4 of 7 Old 01-16-2010, 10:07 PM Thread Starter
jefflacy
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it dosent make it until you let out on the clutch when shifting

if your in on the clutch dose not make it at all

makes it 2wd 4hi and 4 low
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post #5 of 7 Old 01-17-2010, 03:01 AM
80cj
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Quote:
Originally Posted by Cutlass327 View Post
Being 4th is direct drive, where input and output shafts are locked together, I would almost have to say it is in the bearings for the cluster shaft. I can't remember the technical name for the shaft...
Cutlass327 is right. The countershaft cluster gear is used in 1,2,3 and reverse but not in 4th because it's locked directly to the input shaft when in fourth. If it's noisy in all gears besides fourth, it would probably be the cluster gear bearings. Sounds like tranny teardown time.
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post #6 of 7 Old 02-02-2010, 10:19 PM Thread Starter
jefflacy
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So its getting worst and now poping out of 4th so its time i start looking for a rebuild. But donno what im looking for from what i have read i thing the noise is the countershaft cluster gear but not sure what i need.

Is this everything i need to fix the problemMaster Overhaul kit for T176, T177, T178 transmissions BKT170
if not what on this page do i need Jeep CJ Series OEM Style Replacement Parts - T-176 and T-177 4 Speed Transmission Parts for 1981-84 CJ including Transmission Case, Rear Bearing, Rear Oil Seal, Cluster Gears, Countershaft, Reverse Idler Shaft, Reverse Sliding Gear, and more. - Quadr
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post #7 of 7 Old 02-02-2010, 10:28 PM
80cj
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Quote:
Originally Posted by jefflacy View Post
So its getting worst and now poping out of 4th so its time i start looking for a rebuild. But donno what im looking for from what i have read i thing the noise is the countershaft cluster gear but not sure what i need.

Is this everything i need to fix the problemMaster Overhaul kit for T176, T177, T178 transmissions BKT170
if not what on this page do i need Jeep CJ Series OEM Style Replacement Parts - T-176 and T-177 4 Speed Transmission Parts for 1981-84 CJ including Transmission Case, Rear Bearing, Rear Oil Seal, Cluster Gears, Countershaft, Reverse Idler Shaft, Reverse Sliding Gear, and more. - Quadr
Sounds like it's time to tear it down. I have the T-176 repair section of the FSM scanned to PDF file. PM me your email address and I'll gladly email it to you. tThe master overhaul kit should do it. When you tear it down you'll find out if you need anything else (hate those rudes surprises). I understand Novak Enterprises sells a pretty good master overhaul kit also.
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