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11-20-2009, 12:18 PM
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#1 | |
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Registered User
1984 CJ7
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Front axle howling bad..
Picked up my sons 98 cherokee from base the other day to drive it home and noticed something in the front that was roaring and got louder around 30-35 mph... Noise stayed there even with foot off the accelerator and even in neutral coastin with the motor turned off. Does this sound like a pinion bearing, carrier bearings, or wheel bearings? Only has 96k on it....
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It only hurts while you're breathing.. |
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11-20-2009, 12:55 PM
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#2 |
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Go Jeepin
 
2000 XJ Cherokee
Join Date: Apr 2002
Location: out in the garage - Minneapolis, Minnesota
Posts: 15,305
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Hub bearings and pinion bearings are common problems for the D30. Hubs should be considered routine maintenance. Pinion bearing failure is often, but not always, accompanied by pinion seal failure. The pinion should have no play in the bearings when moved by hand.
If the carrier bearings are out, consider swapping in a junkyard axle. The junkyards are full to the fences with Cash 4 Clunkers and many of them were well cared for before they were scrapped. Remove the front drive shaft and go for a drive. This may help eliminate the front drive shaft as the source of the noise. If you cannot determine the cause of the noise, stop by your local 4x4 shop and go for a test drive with a technician.
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. FOR SALE: Wide Track CJ-7 Dana 44 rear axle. PM me for details A Government big enough to give you everything you want, is a Government big enough to take from you
everything you have. The course of history shows that as a Government grows, Liberty decreases. |
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11-20-2009, 01:13 PM
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#3 |
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Registered User
1999 XJ Cherokee
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i got the same hollow sound issue from the front axle. I had the front drive shaft removed and it was still there. Still drives great and gettin 19mpg so im not upset. i do have a slight drip from the axle seal bead bad on one side but its shockingly dripping less now (its full i check often). good to know what might be casueing it regardless if i want to know how much its gunna cost me
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PoopJeep the IV'th - 2000 XJ AW4 & NP231 Lifted, BFG A/T, ORFab PoopJeep the III'rd - Miss you some dude on here bought it... treat it well it was the best PoopJeep the II'nd - R.I.P. you expensive explosive POS PoopJeep the I'st - Saga Starter Rusted to Funk... R.I.P. |
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11-20-2009, 01:58 PM
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#4 |
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Registered User
1984 CJ7
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I just pulled my front driveshaft so it is still there... I have a feeling it is either the carrier bearings or one of the unit/wheel bearings. What is the best way to isolate one from the other??
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It only hurts while you're breathing.. |
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11-20-2009, 02:04 PM
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#5 |
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Registered User
2001 XJ Cherokee
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does the DS yoke have any play in it by hand?
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WTB: HP Dana 30, Long Island/New York Area detours backbone system for sale |
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11-20-2009, 03:16 PM
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#6 |
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Registered User
1984 CJ7
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On the front driveshaft or rear? I have the front one off right now and the yoke sticking out of the front diff has a tiny bit of play turning back and forth but no play up and down or side to side. The front driveshaft parts seem tight. I just took it for another drive and it sounds like I have Mud Terrain tires on the front when in fact they are plain street tires. I even rotated them to the back but no change in the howling.....
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It only hurts while you're breathing.. |
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11-20-2009, 03:25 PM
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#7 |
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Registered User
1989 XJ Cherokee
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jack up the front end and grab each wheel for play in the wheel bearings, grab top and bottom of tire and push the top in while pulling the bottom out of vice versa, if their is noticeable play the hub unit should be replaced.
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11-20-2009, 10:49 PM
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#8 | |
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Registered User
2001 XJ Cherokee
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Quote:
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WTB: HP Dana 30, Long Island/New York Area detours backbone system for sale |
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11-20-2009, 11:01 PM
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#9 |
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Registered User
1993 XJ Cherokee
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for any bearing, regaurdless of application, i fit spins rough, or notchy, then replace it, it is bad. the wheel bearings will likely roar or be quiet on a right or left turn, depending on the hub. if it is constant, it is most likely the carrier and or pinion bearings. on my d44 both the carrier and pinion bearings were bad and no signs of leakage or play. they were tight, relatively smooth, but when i pullet them, they were pitted badly and obviously trash.
the hubs are what i would chech first. 
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'93 4X4 AX-15 NP-231 2" LIFT BFG A/T'S |
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11-21-2009, 12:36 AM
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#10 |
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Registered User
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I Just had same prob.....2 new wheel hub assembly's problem solved....ordered Tinken hubs online did it myself bout $179.00
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11-21-2009, 02:16 AM
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#11 | ||
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Registered User
1990 XJ Cherokee
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Quote:
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Twin 242's The 'build' thread Quote:
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