Ecotec Rear Main Seal Replacement

The rear crankshaft seal is a single-piece seal, which must be installed squarely, and flush to the rear of the block. from your rear main seal. I have a **** GMC terrain and the main seal blow the warranties company is refusing to fix the car because of the problem with the *. 0L w/Extended Crank Flange. Photo by HRAmbo. You will be able to use factory style replacement oil pans, timing cases, oil pumps, cylinder heads, intake manifolds, engine mounts, gasket sets, camshafts, lifters, timing chain sets, distributors, crankshafts with factory style rope rear main seal and knurling. determine which parts to order. Engine is clean internally but starting to leak maybe 1-2 small drops each night. 4l ecotec engine experienced a rear main seal failure. Working diligently to make life a little easier for gearheads and engine shops around the globe, Enginetech is the source for engine rebuilders. The rear main seal was susceptible to leaking and replacement requires the engine, and then the crank, to be removed. Sent from my SM-G930V using Tapatalk. The seal is placed onto the pilot of J-42067, and the assembly is attached to the rear face of the crankshaft, and secured. If you have some information you want to share with us and our visitors, stop by the Forum and leave us a post! Right now we are limiting the listings to Chevy V-8 blocks, cranks and heads. 2L Ecotec engine, the leak was huge. These have additives that can recondition seals to reduce or stop oil leakage. 2 1 Take particular care to fit the siphon cartridge during installation. Stock replacement rear main seal. Im thinkin about going back to ask them to recheck and make sure where the leak is coming from. 231-4701 Chevrolet M10 x 4. 2 X Exhaust. Delivery available Australia wide extra $11 AUTO SALVAGE RECYCLERS 9 Chrysler road Lonsdale S. 470˝ UHL, 2 long, hex Starter Bolt Kit. Read all about the latest Chevy LS1 Engine Building tools now available to help. NAPA is your trusted source for automotive parts, accessories & know how for your car, truck or SUV. Up grade the shifting performance of your ZF S650 with our short throw shifter kit. Note that if the car had a rope type seal in it before, it will have a small pin (like a nail) sticking into the seal cavity in the main cap. My wife's 2003 Ecotec 2. Engine Crankshaft Seal-DOHC, Ecotec, 16 Valves Rear DNJ RM319 (Fits: 2004 Oldsmobile Alero) Dnj Engine Components Rear Main Bearing Seal Set RM310. Dart Machinery Joins as Title Sponsor of LightsOut 10 and 11. Replacement Screws for our MPS. For example, gaskets, one-time use fasteners, and fluids. 0L) for the FWD (front wheel drive) model or 5. Comp Cams has released a new line of performance camshafts for GM EcoTec 2. 4 liter Ecotec engine. VS VT VX VY Commodore Berlina Calais & WH WK statesman $95. Sedan using stop leak. The handle of J-42067 is tightened against the installer cover, until the seal is fully seated. Attractive in design and quiet in operation, this 35kW boiler delivers superb performance using Vaillants innovative AquaComfort system to provide instant hot water at a constant temperature. Chevrolet Equinox Front Crankshaft Seal Replacement costs between $95 and $460 on average. Where is the PCV valve on 2. Sorry for any inconvenience. 168 tooth Chevrolet SFI, Extreme Series (4mm thick) 454 cu in. Weddle Industries now stocks adapter kits to help you mate a VW style bell housing to most of today’s common engine packages (see applications below). This condition may increase crankcase pressure leading to a rear crankshaft seal oil leak. A rear main seal keeps your vehicle's oil inside of the rear of the engine. Saturn Ion Clutch Line Fits F23 and F35 Trans. 2l dohc ecotec engine re-ring rebuild kit $ 197. Not only are the oil-leaks a nuisance, leaking oil sometimes damages the rubber suspension components. $380 sounds cheap. 2009 Chevy Impala 5. Rear main bearing seals keep oil from leaking at the rear of the crankshaft. I have a 2004 Chevy Malibu with a 4 cylinder(2. 0L Turbo LTG, based on a generation of large-displacement four-cylinder engines that are designed for greater efficiency. 2L DOHC L4 Ecotec '03 04 05 quantity. Easy to use parts catalog. 9L 60 degree V6 The rear main seal is shipped on a nylon disc to prevent damage to the inner lip. So, the answer is that you absolutely can get away without the need to buy the expensive tools. But now when I park, there is always a puddle. Before spending the money on the replacement of a rear main seal on an eleven year old car, try one of the higher mileage engine oils such as Valvoline Max Life. Due to the UAW Strike affecting parts distribution centers, ALL GM ORDERS will NOT be processed until the Union reaches a resolution. Search Car Torque Specifications by Engine or Model. 8L ECOTECH Engines. Rear Main Seals. Part Number Description Quantity/Vehicle 12591866 Crankshaft Rear Oil Seal 1 *Repair procedure omitted for space. Replacement Screws for our MPS. We have replacement seals and seal kits for all popular vehicles, but in cases of extreme wear the crankshaft seal contact surface can become grooved, making a replacement seal ineffective. Due to the ongoing problem with the pcv and water getting in the engine the rear main seal blew on the highway destroying the motor. OTC Ford Rear Main Seal Installer - OTC7786. Rear main seal cover plate leaks. Typically the front main seal is pressed into the front timing cover or into the seal housing on timing belt motors. 2L DOHC L4 Ecotec '03 04 05 quantity. com/gp/product/. GMC & Chevy Engines. * ecotec engine I have always had to add oil to this engine but there was never an oil leak. Sorry for any inconvenience. Ensure the proper sealing of the engine with Dorman's Engine Rear Main Seal Cover. BlueDevil Rear Main Sealer restores seals to their original condition while you drive. 0 liters) for the AWD (all wheel drive transmission) model. Doing so will damage/deform the seal. This seal is constructed with a metal outer ring a rubber lip seal using a small circular spring which holds tension on the lip seal as it rides against the sealing surface of the harmonic balancer hub. Find Rear Main Seals and get Free Shipping on Orders Over $99 at Summit Racing! Stock Replacement; More Ways To Save. 4L engine could cause the Check Engine Light with the DTCs P0171, P0300 and P1174. Labor costs are estimated between $44 and $56 while parts are priced at $41. That claim is simply not true. It is a tricky repair though, so unless you’re particularly skilled it’s usually best left to a mechanic. Rear Main Seals. 0 Supercharged Left Main Catalytic For Left Main Xj Made 13-17 Jaguar Supercharged In Usa Converter Catalytic 3. Perfect Seal sealing compound (Buick part #980456) is specified for use on the bolts in some cases. Holden Commodore VS VT VX VY V6 3. 4L engine could cause the Check Engine Light with the DTCs P0171, P0300 and P1174. Regardless, I didn't see it on this forum, so here is a copy/paste of the TSB:. Saturn Ion Clutch Line Fits F23 and F35 Trans. Everyone I interact with at MAPerformance is an enthusiast like me, and they stock all the parts that I want and need for maintenance or modification. If it's a big leak and it seems to be coming from the front (belt end) of the engine, the crankshaft front seal is the major culprit. Molded synthetic rubber is the material most commonly used for rear main seals. Rope seals have proven their worth. 3L with 124k miles was in for a u joint repair, the tech said he noticed the rear main seal was leaking. 50 Years of Service in Crankshaft repair. Also raise the tube up to allow me to route the exhaust anywere under it. 2L Ecotec engine. The 2012 Chevrolet Equinox has 8 problems reported for oil leak. When i pulled the tranny I found that the clutch was covered in oil. However, removal of significant components external to the engine, most notably the transmission, is required. Due to the ongoing problem with the pcv and water getting in the engine the rear main seal blew on the highway destroying the motor. 430-3512 Chevrolet M10 x 4. lb: Engine: Camshaft cover bolts: 9: 7: Camshaft gear bolt 8mm bolt 10mm bolt: 33 65: 24 48: Crankshaft pulley bolt: 205: 151: Cylinder head bolts. the rear main seal has failed causing the engine to lose excessive amount of oil. Everything your need for your Ecotec. The Crankshaft Rear Oil Seal Replacement procedure in SI states what parts are required to complete the repair. A PH (*****0111 credit card & PayPal welcome. Over 6,000 Automotive Torque Specs. 2L powered applications. The dealer will be investigating the clunking in the front end and replacing that as well, I asked them to check the ISS and upper strut mounts to see if either of those are the cause. com FREE DELIVERY possible on eligible purchases. You may have to disconnect the brake lines to obtain enough clearance to remove the torque tube. It works on gasoline or diesel engines that use synthetic or conventional oils. Comp Cams has released a new line of performance camshafts for GM EcoTec 2. Chevy says that although the leak may appear to be emanating from the rear main seal, a more likely source is one or both of the oil galley plugs located just above the seal. I dont want to pay $900 for a rear main seal if its the oil pan seal. 2 liter Sunfire: * 2 1/4 inch in and dual 2 inch out muffler Trans Am muffler. And, when compared to a traditional gasket, the material costs for gasket makers are much less. a front or rear main seal, replacement is the only cure when one. Oddit comes from the right rear area of the motor. Up grade the shifting performance of your ZF S650 with our short throw shifter kit. These have additives that can recondition seals to reduce or stop oil leakage. I have taken it back to the garage three times over water leaks. Commodore Shop Cardiff has new and used spare parts in stock for the most popular makes of Holden Commodore. Bolt/fixing: Nm: ft. One time it felt just like new oil. Savings Central Rear Main Seal Cover. genuine Holden New. This kit includes every gasket, O-ring and seal in the engine from top to bottom. 0 liter GM engines often leak at the rear main seal area. Regardless, I didn't see it on this forum, so here is a copy/paste of the TSB:. I was going to change the rear main seal but it was a one piece type. Looking to buy Rear Main Oil Seal 1954 Plymouth 230 Motor? We feature a huge array of rear main oil seal 1954 plymouth 230 motor and other relevant listings. Designed utilizing the latest technology, this product by Fel-Pro features premium quality and will perform better than advertised. It works on gasoline or diesel engines that use synthetic or conventional oils. 350 Main, 400 Bore Size Bowtie Sportsman Block, 2-Piece Rear Main Seal. I believe it has a "sealed" transmission, and has no dipstick, but has a level plug on the bottom. V6 Genuine suits Holden Kit. ECOTec Rear Main Seal-When rebuilding the ECOTec engine it is important to use new gaskets when needed. One for down here seems similar but with more advanced additives ? Looks like a great product but is twice the price of the Liqui Moly one. lb: Engine: Camshaft cover bolts: 9: 7: Camshaft gear bolt 8mm bolt 10mm bolt: 33 65: 24 48: Crankshaft pulley bolt: 205: 151: Cylinder head bolts. Book Excerpt: 2003-2007 Saturn Ion Repair Manual. However, it has proved during those times that it is, as its marketing line reads, "a different car company. The 2012 Chevrolet Equinox has 8 problems reported for oil leak. CHEVY CASTING NUMBERS. If the crankshaft rear oil seal does NOT require replacement, no further action is required. I was going to fix it myself, but time wasn't something I had an abundance of, and I wasn't sure of where the oil was coming from. 205-5401 Holden V8 12pt Oil Pan Bolt Kit. I would strongly. Find PONTIAC Rear Main Seals and get Free Shipping on Orders Over $99 at Summit Racing!. The Complete 2001 Holden Commodore Ecotec V6 Specifications Genuine Factory Peugeot tool for rear main oil seal removal/replacement. Symptoms of failure are usually a wet area on the rear of the oil pan, an. Kit Instructions (opens in a new window) * The prices listed on this website are for estimating purposes only. The JASPER remanufactured GM 2. 2 with an automatic transmission. 8l V6 Race 5. It is day 5 of this. After replacing the oil sending unit (only cost me 20 bucks) I still have a huge leak. Now, I've never seen a single spot of oil on the driveway, so I assume it only leaks when the engine is running and the pressure pushes it out. Quick View. 99 Oil Pump Shaft Seal Jp Group Fits Opel Vauxhall Saab Hyundai Kia Jeep 638199. GM Service Bulletin 14882 - Blocked PCV valve causing Rear Main Seal failure I have a 2010 NOX that just had this exact problem, but GM says the VIN does not apply. put it as one of your links. $380 sounds cheap. I know the manual says you can remove the sump with the engine in the car, but can you do the rear main seal as well?. 9L 60 degree V6 The rear main seal is shipped on a nylon disc to prevent damage to the inner lip. or replacement within. Besides, it's a hell of a lot cheaper! Tester. After market turbo kits are available to add extra punch. 98 Ultra High Ratio Roller Rocker Kit For Holden Ecotec L36 L67 Sc 3. Since I live in California, I need to upgrade to a variable speed pump. 231-4701 Chevrolet M10 x 4. Find PONTIAC Rear Main Seals and get Free Shipping on Orders Over $99 at Summit Racing!. Choose top quality brands AC Delco, API, Corteco, DNJ Rock, Elring, Ishino Stone, Mahle, National, SKF, Timken. Buy a 2004 Chevrolet Classic Crankshaft Seal at discount prices. Goodluck on this as it's a bugger of job. I would strongly. main oil seal housing or rear main seal installer EN 47623. Removing the seal from this disc and installing on existing seal installer J-34686 can damage the inner seal lip. I've never seen one leak from the thermostat housing. 0 liters) for the AWD (all wheel drive transmission) model. We are always looking for new castings numbers. The water freezes in our climate and pushes the seal and all oil leaks out fast. COMP Cams offers a selection of other performance cams for the ECOtec engine, and 2. This bulletin provides coverage for replacing the crankshaft rear oil seal, performing a positive crankcase ventilation (PCV) pressure test and, if necessary, unplugging the PCV system. Find many great new & used options and get the best deals for Fits 2003-2005 CHEVROLET CAVALIER SUNFIRE 2. com put it as one of your links. He lists under the main cause a leaking gasket. I have a 1966 Bronco that had a steady rear main leak. We have replacement seals and seal kits for all popular vehicles, but in cases of extreme wear the crankshaft seal contact surface can become grooved, making a replacement seal ineffective. The average cost for a Chevrolet Silverado 1500 rear main seal replacement is between $85 and $97. Don't use any sort of seal up. 4L Turbo I4 Engine Air Filter Replacement Guide. The notice instructed dealers to replace the four piston assemblies on the 2011 models at no charge to the customer. well if it is the rear main seal then the trans has to come out the oil pan has to be dropped just to gain access to do the job. I have a 2008 Toyota Highlander with 130K miles and took it in for routine oil change at dealership and was told I have a leak and will need front timing cover reseal completed at the cost of $2,920. When this seal gave way on a 2003 Chevrolet Cavalier with GM's 2. Everyone I interact with at MAPerformance is an enthusiast like me, and they stock all the parts that I want and need for maintenance or modification. In the case of a vehicle with a manual transmission, a faulty or worn seal can allow oil to leak onto the clutch, causing slipping and chattering. Solution: You will need to replace this seal to stop the leak. Titan® Oil Stop-Leak is the safest, strongest and most advanced oil stop-leak on the planet. ECOTec Rear Main Seal-When rebuilding the ECOTec engine it is important to use new gaskets when needed. Problems: A problem with the fuel injectors in the 2. He lists under the main cause a leaking gasket. the rear main seal has failed causing the engine to lose excessive amount of oil. Everything from Cylinder Heads, to Motorcycle Crankshafts to High Performance Crankshafts, we give you that extra mile!. Browse our main site for everything related to Car Engine or try searching for something more specific. Oil leaks at the rear main seal are another common crankshaft malady. Performance from GM's ECOTEC family of engines continues to advance with the 2. Saturn Ion Clutch Line Fits F23 and F35 Trans. com FREE DELIVERY possible on eligible purchases. Rear Main Seal and Plate kit. 350 Main, 400 Bore Size Bowtie Sportsman Block, 2-Piece Rear Main Seal. No such fix, however, was ever offered for the other model years. Shop right now. Presenting Auto 1982 S10 S15 available for purchasing now online!. 2L DOHC L4 Ecotec '03 04 05 quantity. It appears to be an isolated leak on both sides and behind the crankshaft pulley. Find many great new & used options and get the best deals for Perkins Rear Crankshaft Oil Seal 2418F704 at the best online prices at eBay! Free delivery for many products!. GM Service Bulletin 14882 - Blocked PCV valve causing Rear Main Seal failure I have a 2010 NOX that just had this exact problem, but GM says the VIN does not apply. submitted 1 year ago It sucks but replacing a rear main seal to fix a leak at 90k is a lot cheaper than buying a new or. Tinplate Rocker Covers vs Positive Seal Rocker Covers: The first difference is the Rocker Covers which are unlike the earlier tinplate type that used the gasket to achieve a seal. Average repair cost is $1,630 at 92,950 miles. If the consumer asks for the statement in writing, he will not receive it. We turn the engine at 400 RPM with oil pressure lines attached. 4L engine could cause the Check Engine Light with the DTCs P0171, P0300 and P1174. Part Number Description Quantity/Vehicle 12591866 Crankshaft Rear Oil Seal 1 *Repair procedure omitted for space. com/gp/product/. The average cost for a Chevrolet Equinox rear main seal replacement is between $87 and $114. CNC-machined cast-iron competition block +/-0. Dart Machinery Joins as Title Sponsor of LightsOut 10 and 11. The Seal Cover is designed from high-quality materials to stop and prevent engine oil leakage. The crankshaft seal is the primary barrier that keeps oil from leaking around the end of the crankshaft and out of the crankcase. For example, gaskets, one-time use fasteners, and fluids. 15 Crankshaft Seal For Sonata Outlander Lancer Baja Outback Forester Impreza Cd41p3 Oil Pump - $7. The rear main seal in an automobile engine is located directly behind the rearmost main bearing journal of the crankshaft. • The main girdle webbing is opened up on all dry sump racing engines for oil drain back. View online Installation and maintenance instructions manual for Vaillant ecoTEC pro Boiler or simply click Download button to examine the Vaillant ecoTEC pro guidelines offline on your desktop or laptop computer. If you have some information you want to share with us and our visitors, stop by the Forum and leave us a post! Right now we are limiting the listings to Chevy V-8 blocks, cranks and heads. Commodore Shop Cardiff has new and used spare parts in stock for the most popular makes of Holden Commodore. You can now lower the rear suspension. Commodore Parts. • All main girdle stud holes have been reamed to. Gen V & VI 1991-97 Externally Balanced 1 pc Rear Main Seal HP4002X 168 tooth Chevrolet SFI, Extreme Series (4mm thick) LS Series “Dished” Flexplate, Will NOT replace “Flat” Flexplate on 6. 2l auto with 140 000 kms)has developped a small oil leak that seems to be coming from rear main seal or oil galley plugs (as per TSB 06-06-01-013). Due to the ongoing problem with the pcv and water getting in the engine the rear main seal blew on the highway destroying the motor. Browse our main site for everything related to Car Engine or try searching for something more specific. I would strongly. Instead, look at the oil galley plugs just above the rear main seal. Ecotec Rear Main Seal (Gaskets & Filters). How to Replace a Crankshaft Rear Main Seal A rear main seal will lose engine oil while causing a bad oil leak Your car's engine rear main crankshaft seal is designed to give the engine oil leak protection from between the crankshaft output flange and the engine block. The Vaillant ecoTEC Plus 835 combination boiler is suitable for medium to large sized homes with up to 2 bathrooms and an en-suite. Commodore Parts. Chevy says that although the leak may appear to be emanating from the rear main seal, a more likely source is one or both of the oil galley plugs located just above the seal. 8l for - Compare prices of 222907 products in Auto Parts from 250 Online Stores in Australia. Read all about the latest Chevy LS1 Engine Building tools now available to help. Price: Engine (58) Fuel (2) Rebuild includes replacement of all broken or out of sp. GM Ecotec 1. This is a two hour job for a home. V6 Genuine suits Holden Kit. Been running 5w30 full synthetic oil since new and now thinking of going to high mileage oil hoping to get rid of this leak ( a few drops on the garage floor overnight ). 2L ECOTEC ENGINE RE-RING REBUILD KIT at the best online prices at eBay!. It runs a treat still so haven't bothered to upgrade ill drive her till she finally says no more, sure its a bit down on power to back then but still pulls fairly well and i service it every 7,500kms only issue ive had is a weep from the timing cover seal and inlet manifold gasket vacuum leak! so those 2 issues since 2008 is fairly good!. (Reason behind it running a 2. Designed utilizing the latest technology, this product by Fel-Pro features premium quality and will perform better than advertised. I like your style. The JASPER remanufactured GM 2. Fit Gm Lsj Lnf Le5 Ecotec Gen Ii Engine Cooling Water Pump Lat Le9 Laf Lea Motor. 2L powered applications. the failure caused a majority of the engine oil to be pushed out through the rear main seal destroying the engine. The oil capacity specification in the owner's manual for the Ecotec 1. Dart Machinery Joins as Title Sponsor of LightsOut 10 and 11. Rear Main Seal Replacement - corvettehacks. The Ten Most Common Gasketing Mistakes: Gasket makers and flange sealants are great time savers to have on hand in the shop. Working diligently to make life a little easier for gearheads and engine shops around the globe, Enginetech is the source for engine rebuilders. Find Chevy In Stock Now. “You have a leak from your rear main seal” is one of those phrases that we all hope to never hear from your mechanic. 2009 Chevy Impala 5. Shop 9 5 available to buy now online. CHEVY CASTING NUMBERS. I have a 2004 Chevy Malibu with a 4 cylinder(2. These kits contain an adapter plate and all necessary hardware to help fit the bare engine to the transaxle. Now, I've never seen a single spot of oil on the driveway, so I assume it only leaks when the engine is running and the pressure pushes it out. 1 X Rear main cover gasket. You will be able to use factory style replacement oil pans, timing cases, oil pumps, cylinder heads, intake manifolds, engine mounts, gasket sets, camshafts, lifters, timing chain sets, distributors, crankshafts with factory style rope rear main seal and knurling. Engine Crankshaft Seal-DOHC, Ecotec, 16 Valves Rear DNJ RM319 (Fits: 2004 Oldsmobile Alero) Dnj Engine Components Rear Main Bearing Seal Set RM310. • The main girdle webbing is opened up on all dry sump racing engines for oil drain back. Doing so will damage/deform the seal. This part is engineered very poorly and GM has continued to use it anyway. Browse our main site for everything related to Car Engine or try searching for something more specific. 8 ECOTEC LEXCEN Brand New 5 Year Full. If the threads are stripped or worn, replace them with ones that have sealant preapplied and again tighten to 44 ft. The seal is placed onto the pilot of J-42067, and the assembly is attached to the rear face of the crankshaft, and secured. Regardless, I didn't see it on this forum, so here is a copy/paste of the TSB:. Replacement Engine Part Shop New Ford Rear Main Seal Nos Oem F1tz6701a F1tz6701a Nos Ford Rear New Main. Price Highest Best Match Ending Soonest Price. Commodore Parts. Once its all clean drive it for a day or so and then try to trace the oil back to it's. I bought a Vauxhall Astra from my local dealer 12 months ago. Includes valve covers, front timing cover, oil pan, new oil pump. He lists under the main cause a leaking gasket. If you have a question or don't see the engine you are looking for, email us or call us at 1-800-275-7371 and we will be happy to answer your questions. The chance of you needing to change a water pump on one of these engines is increasing daily, with the number of the cars on the road today. Up grade the shifting performance of your ZF S650 with our short throw shifter kit. Comp Cams EcoTec Cams improve horsepower and overall performance for this increasingly popular sport compact application without compromising engine durability. If its the front, then the harmonic balancer will be removed. This means the transmission has to come out to replace the rear main. 1 X Oil filter adapter gasket. 2L powered applications. It happens and can be a pain to replace if you're a DYI kinda person without the nec. The Rear main seal should be replaced when doing the engine build to make sure there are no leaks at the back of the engine. 470˝ UHL, 2 long, hex Starter Bolt Kit. Bolt/fixing: Nm: ft. Price Highest Best Match Ending Soonest Price. That's what I'd do. Once its all clean drive it for a day or so and then try to trace the oil back to it's. Engine Crankshaft Seal-DOHC, Ecotec, 16 Valves Rear DNJ RM319 (Fits: 2004 Oldsmobile Alero) Dnj Engine Components Rear Main Bearing Seal Set RM310. 2L ECOTEC Head Stud Kit. Besides, it's a hell of a lot cheaper! Tester. Gen V & VI 1991-97 Externally Balanced 1 pc Rear Main Seal HP4002X 168 tooth Chevrolet SFI, Extreme Series (4mm thick) LS Series “Dished” Flexplate, Will NOT replace “Flat” Flexplate on 6. Buy OTC Tools & Equipment Rear Crankshaft Seal Installer- GM & Chevrolet (OTC-J-44642): Crankshafts - Amazon. 98 Roller Rocker Kit For Holden Calais Vs Vt Vx Ecotec L36 L67 Sc 3. not just a bulletin that you will only find out after the engine has seized. determine which parts to order. But now when I park, there is always a puddle. Determine if the crankshaft rear oil seal requires replacement. 231-4701 Chevrolet M10 x 4. Now for the crankshaft seal. My Gregory's shows the rear main seal to be straightforward. To support the seal housing for seal removal, place two blocks of equal thickness on a flat surface, position the seal housing and blocks so the transaxle side of the seal housing is supported across the dowel pin and center bolt holes on both sides of the seal opening. There is no noticable leak at idle besides the residual on the casing. Of course, I have to replace a leaky seal while I'm at it, or the new clutch will end up shuddering, too. Depending on which type you're dealing with, a replacement can be easy. 4l ecotec engine experienced a rear main seal failure. Also raise the tube up to allow me to route the exhaust anywere under it.