Alsn is the worlds largest manufacturer of fully automatic transmissions for medium and heavyduty commercial vehicles and is a leader in hybridpropulsion systems for city buses. Genuine allison transmission 29540491 replacement front bell housing. View photos, details, and other transmission cores for sale on. It could be cause by the absence of a vent hole in the dipstick. Im looking for the best option for the budget, however been seeing some advantages to a 6 speed trans. I got the transmission out the rear housing seems like its in great shape. At the same time, the return spring, which is anchored in the rear of the case, will try to.
Allison transmission is the worlds largest manufacturer of fully automatic commercialduty transmissions, and is a leader in hybridpropulsion systems. I would take that cover off and turn the flywheel by hand to see if you can see a. Allison cracked bellhousing chevy and gmc duramax diesel forum. It is very easy to damage this oring when doing this job. Utilizing these fittings will allow the use of this updated housing in your. This was so named because it began with chevrolets v8 engines.
Transtar carries a full line of oe new, aftermarket new and remanufactured parts and accessories for allison type transmissions. If no problems, i dont see a problem with leaving it alone. Allison transmission gm diesel trucks diesel power. Apr 26, 2014 i got the transmission out the rear housing seems like its in great shape. Transmission make allison transmission model at545 truck make. I dont know how badly it is cracked i have not seen the truck yet. Its possible to do it yes but when you have a big bad allison in limp mode because it cant hold up to power you were better off putting a converter and valve body in your 47re. Allison transmission auto isuzu npr nrr truck parts busbee. Will the 5spds bell housing bolt onto my 6spd no problem. Allison cracked bellhousing chevy and gmc duramax diesel. The bypass pipe bolts to the front of each cylinder head. Dec 11, 2009 depending on what he means when he says broken, you might not even have to fix it. I talked to a friend and they said the bell housing can be replaced without rebuilding the transmission. I own a 04 2500hd duramax with the allison 5 speed.
I cannot remember if the 1995 nv4500 had the internal slave cylinderrelease combo or if it was mounted on the bell like the earlier units. Gm iron duke rwd inline 4 early rwd variants, later versions may use a fwd pattern, and have two possible starter locations. Allison transmission assy parts truck component services. A cracked flex plate is almost always a sign of other problems. Depending on what he means when he says broken, you might not even have to fix it.
Cracked bell housing and adapter archive duramax diesels. Find an allison authorized service facility near you. Furthermore, if not properly diagnosed it will occur again and often damage to the transmission may follow. These use a chrysler custom torqueflite 904 automatic transmission with an integral chevrolet bellhousing. Allison transmission is the worlds largest manufacturer of fully automatic transmissions for medium and heavyduty commercial vehicles and medium and heavytactical u. In this episode we take a look at the cause of a cracked bell housing on a customers truck. It came out from behind a 6hk1 isuzu engine but has many other applications, foriegn and domestic, in the medium truck line. Well with the little bit of information given, the only thing that would cause a bell housing to crack would be brokenmisaligned engine or transmission mount. Jul 05, 2010 binderman i havent cracked my zfs housingyet. Check out 287 allison md3060 transmission assy parts for sale. If its just a cracked bellhousing, there is no problem because the bellhousing is just a shroud for the torque converter. Cummins car and truck flywheels, flexplates and parts for.
I do have another whole transmission i could put in if the trans is bad and i have another flywheel housing for that particular engine if it needs one. Where would a fuel leak originate on a 04 lb7 that leaks a large amount of fuel from a standard transmission weep hole after the engine is turned off. It would be safe to drive it home or to a repair shop, but i would have it replaced asap. Nov 01, 2010 does anyone know of a memorecall on problems with the bellhousing on the allison transmission. Broke tail housing in a duramax diesel with a allison transmission, this is a lly duramax we are replacing it with a oem part. The bellhousing on my 04 silverado is cracked and someone told me that someone at a dealership said that they have seen some kind. Get the best deals on cummins car and truck flywheels, flexplates and parts when you shop the largest online selection at. This is a used transmission out of an 03 isuzu frr that was wrecked with 70k. Allison transmission 29540491 front bellhousing 20012007 lb7. It had a trans fluid leak from one of the bolt holes in the bell housing. A cracked bell housing is caused by worn transmission andor engine mounts causing excessive vibration or movement which eventually will cause the bell housing to crack. Therefore when changing a cylinder head this part must be removed. Mar 01, 2010 read about the history of gms iconic allison transmission, along with its strengths and weaknesses, only on, the official website of diesel power magazine. Nov 19, 2014 in this episode we take a look at the cause of a cracked bell housing on a customers truck.
Transtar carries a full line of oe new, aftermarket new and remanufactured parts and accessories for allisontype transmissions. Allison transmission 29540491 front bellhousing 20012007. I also have bellhousings that would fit that particular transmission. Transmission make allison transmission model at545 truck make chevrolet at545 allison take out clark reman. Includes transmission mounting bolts and starter mounting bolts. I had covered the original belly pan with sheet metal long ago so the good news is the oil pan was not damaged. Cracked fly wheel usually gets louder as it gets hotter, or under heavier load.
The same things that cause the flexplate to crack can also cause transmission problems. This would cause excessive stress on the bell housing under torque and could cause it to crack. Defeo has a comprehensive product line consisting of new stock and performance aftermarket parts, genuine allison parts, surplus,good used and refurbished parts for allison. Make transtar your single source for all of your allison transmission parts and accessory needs. Learn how you can ensure the performance and durability of your allison transmission. Episode 1 of merchant automotives mechanics minute. I had my truck at the shop today 1987 ford f350 fwd 4spd. This housing has the speed sensor boss on the casting. They dont hold up well to anything over stock just like a stock 47re. Due to the thickness of the aluminum, we recommend using oxyacetylene and a size 3 or 4 tip. The park pawl may try to come off with extension housing. The g force cummins to allison adapter plate and flexplate kit accommodates 1989 thru 2002 cummins 6bt engines, bolting to an gm allison automatic transmission, model years 2001 thru 2007, or with the lt duramax bellhousing pattern. I cracked the bell housing on my built allison 6spd and took a chunk out of the adapter plate on the back of the lbz so i picked up a 5spd allison and lly cheap and now am just wondering a couple things. Does anyone know of a memorecall on problems with the bellhousing on the allison transmission.
The gm 4l80e transmission is found in chevrolet and gmc pick ups, g vans and commercial chassis with gvw of 8600 or greater from 1991 and up thru 2006, isuzu npr and nqr trucks as well as gmcchevrolet w3500 and w4500 trucks with either the 5. Unfollow allison transmission \ to stop getting updates on your ebay feed. Allison md3060 cracked bellhousing view full part details. Noise in my chevrolet silverado sounds like flywheel.
Where is the best place to drain the coolant on these trucks i imagine i have to drain it to get the rear plate of the motor. I used an aftermarket kit to replace all three hoses on my 2006 truck. The bellhousing on my 04 silverado is cracked and someone told me that someone at a dealership said that they have seen some kind of memo regarding something with the housing. For more than 100 years, allison transmission has continuously discovered new ways to make work easier and more efficient. The transmission is ok but the bell housing is cracked. A fast fix for the allison lct caution be careful with the park pawl while removing the extension housing.
Nov 06, 2008 well with the little bit of information given, the only thing that would cause a bell housing to crack would be brokenmisaligned engine or transmission mount. The g force adapters position the transmission straight, not angle rotated as some oem. Check out our newest addition to technical information. Jun 26, 2009 i cant figure out why, but two times already the bellhousing on my tuck has cracked.
The destroked adapter plate must be used with our hybrid billet flexplate. Allison 2000 series 1 no part of any atsg publication may be reproduced, stored in any retrieval system or transmitted in any form or by any means, including but not limited to electronic, mechanical, photocopying, recording or otherwise, without written permission of automatic transmission service group. Allison autos are real common in readymix trucks too. You just need a nv4500 bellhousing from either gas or diesel. I talked to a friend and they said the bell housing can be. It would be rare for this sensor to leak,although it is easily removed,the only seal is an oring. Read about the history of gms iconic allison transmission, along with its strengths and weaknesses, only on, the official. Once you get the cast to the proper working temperature, the aluminum filler rod flows in wonderfully. All content is posted anonymously by employees working at allison transmission. Cracked transmission housing so, our 01 jetta tdi manual had an unfortunate meeting with a curb this morning. I figured it was the firewall cracked and flexing like.
A cracked cast aluminum transmission case is repaired with super alloy 5 and an oxyacetylene torch. Transmission cooler line adapter fittings 88996640 listed above. I got the flex plate and fly wheel of to they are not cracked at all. Once you get the cast to the proper working temperature, the. We help you find the heavy duty truck parts that you need. Im saying an allison isnt what its cracked up to be. A fast fix for the allison lct a fast fix for the. Unfollow allison transmission\ to stop getting updates on your ebay feed. The likely source would be the breather located at the top rear of the trans main case. This is why one should perform a coolant system pressure test. Jun 09, 2015 broke tail housing in a duramax diesel with a allison transmission, this is a lly duramax we are replacing it with a oem part.