Question about 2005 Honda CRF 250 R

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Can the crankshaft seal on the ignition side be replaced externally after the flywheel is removed or does the case have to split? It leaks oil. Also is the flywheel extractor size for the sem ignition M26-1.5 pitch the model is 1994 250 exc us thanks kevin

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Put a self taping scriw in to the seal and then pull with a mole grips.

Posted on Jul 31, 2009

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Case needs to be split

Posted on Jul 29, 2009

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1 Answer

Crankshaft seal on a 2005 chevy equinox


If you're looking for the seal -have a look on Ebay:
1 042results for equinox crankshaft seal

If your question relates to a leak, a classic symptom of a leaking crankshaft seal is drips of oil from the bell housing - where the transmission attaches to the engine. It only leaks when the engine is running.

To replace the seal you need to remove the transmission/clutch/flywheel assembly -or in the case of auto transmission - the torque converter which attaches to the rear of the engine.

To remove the old seal you simply prise it out with a screwdriver, lubricate the new seal and gently tap it into position. However as mentioned, you need to remove the transmission first..

Oct 23, 2016 | 2005 Chevrolet Equinox

1 Answer

How do I replace the rear seal on a cadillac cts


YOU NEED TO REMOVE FLYWHEEL REMOVE OIL PAN. REMOVE REAR OIL SEAL HOUSING BOLTS. USING THE PRY POINT LOCATED AT THE EDGE OF THE CRANKSHAFT REAR MAIN SEAL HOUSING SHEAR THE RTV SEALANT. REMOVE THE REAR MAIN OIL SEAL. INSTALL GUIDE PINS INTO THE TWO CRANK SHAFT REAR OIL SEAL HOUSING CORNER BOLT HOLES OF THE ENGINE BLOCK.INSTALL THE CRANKSHAFT REAR SEAL INSTALLING TOOL ONTO THE REAR OF THE CRANKSHAFT FLANGE. APPLY A 0.2 INCH 3MM BEAD OF SILICONE SEALANT TO THE REAR OIL SEAL HOUSING . INSTALL THE REAR HOUSING TO THE ENGINE BLOCK.REMOVE THE GUIDE PINS AND INSTALL THE HOUSING BOLTS TIGHTEN THE BOLTS TO 89 INCH LBS. REMOVE THE REAR SEAL INSTALLATION TOOL FROM THE CRANKSHAFT FLANGE.THEN INSTALL OIL PAN AND FLYWHEEL.

Sep 10, 2011 | 2008 Cadillac Cts

3 Answers

2002 Pontiac Sunfire GT. 2.2 Litre Ecotec Engine. Concern: Front Seal is leaking. Question: Does the engine need to be pulled to replace the seal?


No. The crankshaft pully can be removed through the right wheel well area. (This is the hard part) Once the pully is off, the seal is relatively easy to change.

Jan 25, 2011 | 2003 Chevrolet Cavalier

2 Answers

Oil Is Leaking Out Under The Harminc Balancer On my 92 Jeep Wrangler,4.0 6cyl. I Replaced The Main Seal & Put A New Balancer On & It Still Leaks From The Bottom Of The Balancer


  1. timing cover is leaking oil betwwen cover and block
  2. Disconnect the negative battery cable.
  3. Remove the drive belt(s), fan and fan shroud. If equipped, remove the accessory drive belt pulley.
  4. Remove the vibration damper retaining bolt and washer. Remove the vibration damper using a suitable puller.
  5. Remove the accessory drive brackets attached to the timing cover.
  6. Remove the A/C compressor, if equipped, and alternator bracket from the cylinder head and move to one side.
  7. Remove the oil pan-to-timing case cover bolts and the cover-to-cylinder block bolts.
  8. Remove the timing case cover front seal and gasket from the engine.
  9. Cut off the oil pan side gasket end tabs and oil pan front seal tabs flush with the front face of the cylinder block. Remove the gasket tabs.
  10. Clean the timing case cover, oil pan and cylinder block gasket surfaces.
  11. Remove the crankshaft seal oil seal from the cover by prying it out with a suitable tool.

To install:

  1. Install a new seal in the timing cover using a suitable seal installation tool.
  2. Apply sealer to both sides of the replacement cover gasket and position the gasket on the cylinder block. Cut the end tabs off the replacement oil pan gasket corresponding to those cut off the original gasket. Attach the end tabs to the oil pan with sealer.
  3. Coat the front cover seal end tab recesses generously with sealer and position the seal on the timing cover.
  4. Apply engine oil to the seal-oil pan contact surface, then position the cover on the cylinder block.
  5. Insert timing case cover alignment tool J22248 or equivalent, in the crankshaft opening. Install the cover-to-cylinder block bolts and tighten them to 62 inch lbs. (7 Nm). Install and tighten the oil pan-to-cover bolts to 11 ft. lbs. (13 Nm).
  6. Remove the cover alignment tool and position a replacement oil seal on the tool with the seal lip facing outward. Apply a light coat of sealer to the seal and a light coat of oil to the crankshaft. Install the seal on the timing cover.
  7. Apply a light film of oil to the vibration damper hub seal contact surface. Install the vibration damper using a suitable installation tool.

Do not hammer the damper into place as damage may result to the damper or engine.

  1. Install and tighten the crankshaft vibration damper bolt to 80 ft. lbs. (108 Nm).
  2. If equipped, install the crankshaft pulley and tighten the bolts to 20 ft. lbs. (27 Nm).
  3. Install the accessory brackets.
  4. Install the fan and fan shroud.
  5. Install the drive belt(s) and adjust to the proper tension.
  6. Connect the negative battery cable.
  7. Start the engine and check for leaks
  8. .

Jan 18, 2011 | 1992 Jeep Wrangler

1 Answer

Rear barring an seal replaced


I'm not sure if this is the right part of your car but, are you talking about the rear seal on the engine for the crankshaft?

If so:

Rear Main Oil Seal REMOVAL & INSTALLATION Fig. 1: Rear main seal installation for the 2.3L and 2.5L engines 85553306.gif
Fig. 2: Removing the rear main seal 85553307.gif
Fig. 3: Installing the rear main seal on the 2.9L engines 85553308.gif
If the crankshaft rear oil seal replacement is the only operation being performed, it can be done in the vehicle as detailed in the following procedure. If the oil seal is being replaced in conjunction with a rear main bearing replacement, the engine must be removed from the vehicle and installed on a work stand.
  1. Remove the starter.
  2. Remove the transmission from the vehicle, following the procedures in Section 7.
  3. On a manual shift transmission, remove the pressure plate and cover assembly and the clutch disc following the procedure in Section 7.
  4. Remove the flywheel attaching bolts and remove the flywheel and engine rear cover plate.
  5. Use an awl to punch two holes in the crankshaft rear oil seal. Punch the holes on opposite sides of the crankshaft and just above the bearing cap to cylinder block split line. Install a sheet metal screw in each hole. Use two large screwdrivers or small pry bars and pry against both screws at the same time to remove the crankshaft rear oil seal. It may be necessary to place small blocks of wood against the cylinder block to provide a fulcrum point for the pry bars. Use caution throughout this procedure to avoid scratching or otherwise damaging the crankshaft oil seal surface. To install:
  6. Clean the oil seal recess in the cylinder block and main bearing cap.
  7. Clean, inspect and polish the rear oil seal rubbing surface on the crankshaft. Coat a new oil seal and the crankshaft with a light film of engine oil. Start the seal in the recess with the seal lip facing forward and install it with a seal driver. Keep the tool, T82L-6701-A (4-cyl. engines) or T72C-6165 (6-cyl. engine) straight with the centerline of the crankshaft and install the seal until the tool contacts the cylinder block surface. Remove the tool and inspect the seal to be sure it was not damaged during installation.
  8. Install the engine rear cover plate. Position the flywheel on the crankshaft flange. Coat the threads of the flywheel attaching bolts with oil-resistant sealer and install the bolts. Tighten the bolts in sequence across from each other to the specifications listed in the torque chart in this section.
  9. On a manual shift transmission, install the clutch disc and the pressure plate assembly following the procedure in Section 7.
  10. Install the transmission, following the procedure in Section 7.
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Oct 07, 2010 | 1994 Ford Explorer Limited

1 Answer

I have a 2006 Pontiac Grand Prix, it is supercharged 3800. I have about 115,000 miles on it and I change the oil every 3,000 miles, check fluids, regular preventative maintenance, etc. I noticed a small...


If it's oil, it's coming from the rear main seal.. I would go with this idea.

The seal doesn't cost much but the labor to get to it does.

To give you an idea what is involved the procedure is illustrated below from the service manual:

Removal & Installation 3.8L Engine To Remove:
  1. Drain the engine coolant.
  2. Drain the engine oil.
  3. Remove the oil pan.
  4. Remove the engine flywheel.
  5. Remove the rear oil seal housing and gasket. Rear seal removal 3.8L gm-03-38-1175.gif

  6. Remove the rear main seal by placing the housing face down on 2 blocks of wood. Using a drift tool and hammer tap the seal out of the housing.
To Install:
NOTE: Do not lubricate the rear main oil seal or the installation tool. Do not touch the sealing lip of the rear main seal once the protective sleeve is removed.
NOTE: Use a clean lint free cloth to clean the crankshaft sealing surface. Remove sharp edges or burrs that could damage the rear main oil seal. Remove burrs or sharp edges with a crocus cloth.
  1. Carefully remove the rear oil seal from the protective sleeve.
  2. Install the oil seal onto the seal driver EN-47623 or equivalent by placing the seal at an angle and twisting until it is fully seated.
  3. Install the seal into the housing using the seal driver EN-47623 or equivalent and driver handle J-8092 or equivalent. Apply downward force until the seal is seated. NOTE: Ensure that the housing gasket is installed correctly and that the oil passages are not blocked.
  4. Using a new gasket Install the rear oil seal housing on the engine being careful not damage the rear main seal. NOTE: The plastic inserts are used in production and are not needed for assembly.
  5. Hand tighten the bolts. Rear seal housing alignment 3.8L gm-03-38-1176.gif

  6. Place a straight edge on the crankshaft rear oil seal housing flange and the engine block oil pan flange. Using a feeler gauge check that there is no more than .0004 in (0.10 mm) step on each side. Rotate the housing to make the steps equal on both sides.
  7. Tighten the housing bolts 11 ft-lb (15 Nm) plus an additional 50 degrees.
  8. Ensure that the housing did not move out of specification. Repeat step 6 if the oil seal housing is not within the specified range. Replace the rear oil seal housing if the specified measurement can not be reached.
  9. Install the flywheel.
  10. Install the oil pan.
  11. Fill the engine oil and the cooling system.
  12. Check for leaks
5.3L Engine To Remove:
  1. Remove the flywheel from the crankshaft.
  2. Remove and discard the crankshaft rear oil seal from the rear cover.
To Install:
  1. Use clean engine oil to lubricate the outside diameter of the crankshaft rear oil seal and rear cover oil seal bore.
  2. Install the tapered cone and bolts of a J 41479 or equivalent crankshaft rear oil seal installer onto the crankshaft.
  3. Place the crankshaft rear oil seal onto the tapered cone.
  4. Install the threaded rod of the J 41479 crankshaft rear oil seal installer into the tapered cone. Rear main seal installer 5.3L gm-03-53-3872.gif

  5. Install the crankshaft rear oil seal by turning the handle of the J 41479 clockwise.
  6. Remove the J 41479 crankshaft rear oil seal installer from the crankshaft.
  7. Install the flywheel onto the crankshaft.
prev.gif next.gif--- I'm not sure what the exact cost would be as the hours were not listed for this procedure on my online resource.

Sep 02, 2010 | 2006 Pontiac Grand Prix

1 Answer

Leaking crankshaft seal


The manual on the 750 says put new seals on the crank as you install it, and I believe they have a locating lip on the seal that fits in a groove in the cases. which means a split.

I have trimmed the lip off the seal, and installed them with loctite master gasket, the old seal is hard to remove due to the lip

Mar 21, 2010 | 1977 kawasaki Z 650

1 Answer

My 1969 ts 250 is burning crank case oil. Must be the crankshaft seal is out? Can I replce the seal without spliting the crankcase joint?


If your motorcycle is burning oil this indicates worn top end components. A leaking crank shaft seal would be leaking onto the ground. Yes you can replace the seal without splitting the cases, with the right tools.

Jan 04, 2010 | Suzuki ST 250 Motorcycles

1 Answer

My 1994 camaro w/ 3.4L engine has an oil leak in rear of engine. It is running down both sides of the block in rear. Oil filter is wet, but not leaking, the starter and bell housing drip oil and its...


This is most likely a leak from your rear main seal. It happens and can be a pain to replace if you're a DYI kinda person without the nec. equipment.
  1. Raise and safely support the vehicle with jackstands.
  2. Remove the transmission.
  3. If equipped with a manual transmission, remove the clutch and pressure plate.
  4. Remove the flywheel assembly.
  5. Using a suitable prytool, carefully pry the old seal out.
6. Inspect the crankshaft for nicks or burrs, correct as required.
88143g59.gif Crankshaft rear main seal - 5.7L engine

To install:
  1. Clean the area and coat the seal with engine oil. Install the seal onto tool J-34686 for 3.4L engines, J 41349 for 3.8L engines or J 35621 for 5.7L engines.
  2. Install the tool (with the seal mounted to it) onto the rear of the crankshaft. Tighten the screws snugly to be sure the seal will be installed squarely over the crankshaft.
88143g60.gif Exploded view of the rear main seal installation - 3.4L engine
Click to Enlarge

  1. Tighten the wing nut on the installation tool until it bottoms out.
  2. Remove the tool from the crankshaft or rear oil seal housing, as applicable.
88143g61.gif Rear main seal and installation tool - 3.8L engine
Click to Enlarge
88143g62.gif After position the seal on the tool, install it to the crankshaft housing

  1. Install the flywheel.
  2. If equipped with a manual transmission, install the clutch and pressure plate.
  3. Install the transmission.
  4. Check the fluid levels, start the engine and check for leaks.

Dec 30, 2009 | 1995 Chevrolet Camaro

1 Answer

How do you replace the crank seals in a suzuki 2000 rm 125


  1. Remove the left case cover and then remove the flywheel
  2. Drain the oil then remove the right case cover
  3. Remove the clutch
  4. Remove the Drive gear from the crankshaft.
  5. Now use a screwdriver to pry the old seals out.
  6. Smear oil on the interior of the new seals then install new seals flush with the casing
  7. Reassemble and put in fresh oil
  8. A “very helpful” rating for this answer? Thanks
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Jun 26, 2009 | 2003 Suzuki RM 125

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