Remove “distance spacer” . This sleeve
locates the crankshaft cone and provides a replaceable sealing surface for the
crankshaft seal.motorcycle auto oil seals
choice materials.
The Jaguar V-12 crankshaft damper assembly is either an engineering masterpiece or another example of Jaguar overcomplicating an existing proven design. I suspect there is a bit of truth in both statements. The assembly works by having the crankshaft bolt force the damper against a collapsible cone that transfers the holding friction to the crankshaft nose. (Proper reassembly is critical). In addition the design uses a “distance spacer” to position the cone and provide a replaceable sealing surface for the crankshaft seal.
I butchered up an existing screwdriver to use in removing the old oil seal.motorcycle auto oil seals choice materials.
There are two indentations at either side of the cover that facilitates removal of the seal. The easiest method for removal is to simply punch a slot in the seal at the indentation and pry out the seal.rubber sealing.
Note: Carefully clean the seal mounting area. Any nicks incurred during the removal process must be addressed now.
All crank seals for the V-12 are identical. Jaguar initially listed a part number for the seal only for the early cars. That listing has been discontinued, and the only seal currently available from Jaguar includes a new “distance spacer”. It is also not cheap. Even from a third party supplier expect to pay approx. $70.00 US for seal and spacer. (Jaguar part number JLM 10613).motorcycle auto oil seals choice materials.
For those who hate to spend money, NAPA (auto parts chain in the US) sells just the seal for approx $10.00 US (part number 21098)
Pictured below is the old seal, old distance spacer along with the Jaguar seal and distance spacer.nok seal. The Jaguar seal has a rubber coating impregnating the outer band. This affords a better seal between the outer seal and the crankshaft cover. Interesting, it does not have the compression spring, which the original seal had and has become the norm for this type of seal.
Note the orientation of the old seal,it was installed with the lip out. This is the way it was removed, and based on everything I know, was installed backwards at the factory.
There are two ways to install this seal. Hammer in, or press it in. You can hammer it in, however close quarters and the possibility of damaging the seal precludes that idea. My recommendation is to press the seal in. I fabricated a press that uses the crankshaft bolt as leverage. I purchased a 2 to 1 1/2 inch galvanized pipe reducer from Home Depot. Any plumbing store will have this. The 2-inch side is exactly what I need to address the seal. The 2″ side will be used to press the seal in. The height of the reducer is critical. Measure 1 7/8 inch from the 2″ side and cut the pipe at exactly 1 7/8 inches. (Measure from the 2-inch side. Cut from the 1 1/4 inch side.)motorcycle auto oil seals choice materials.
I used a flat file to get the 2-inch surface perfectly flat. This is not absolutely necessary, however you might as well make this the right way.viton seal.
As seen in the photograph below the 2″ side of the pipe union mates exactly with the NAPA oil seal.The yellow arrow identifies the Jaguar seal.
The crankshaft bolt will be used to force the modified pipe union against the new seal thus pressing it into the crankshaft cover.
Inspect the crankshaft and collapsible cone keys. If there are any nicks incurred during removal of the keys, dress the keys up on a flat file.
In addition, make sure the keys fit the appropriate groves in the cone and damper.
Prior to installation, Oil the sealing surface of the crankshaft seal.
The NAPA seal has a standard uncoated metal outer ring with the usual compression spring around the sealing lip. If you are using the NAPA seal I recommend a thin coating of non-hardening Permetex around the outer perimeter on the seal. This will mask any slight imperfections that might occur as the seal is pressed in. If you are installing the Jaguar seal this step is not necessary due to the existing rubber coating on the seal ring.motorcycleauto oil seals choice materials.
Position the seal to the crankshaft cover. The seal in unidirectional, it must be installed with the lip towards the engine.
Make sure the seal is centered and slightly inside the mounting flange.
Position the “Press” over the outer ring of the seal and hand tighten the crankshaft bolt snug to the press.silicon seal.
Tighten slowly with a socket until the seal is flush against the crankshaft cover.
Make sure the new spacer is coated liberally with engine oil before installing. If installing the NAPA seal only, clean the distance spacer, oil, reverse and install. By reversing the spacer the oil seal lip is afforded a new surface to seal against.
The tolerance of the new spacer to the crank is miniscule. If it is not offered to the crank nose exactly square it will not go on. Do not force it. If necessary use the crankshaft bolt to move the spacer along the crankshaft. When seated, the spacer should protrude slightly in relationship to the crank seal.
Clean the crankshaft damper, cone and crank. All surfaces that the collapsible cone will come in contact with must be clean and oil free. Install crankshaft key. Offer cone to crankshaft making sure the crankshaft key lines up with the key slot in the cone.
Cone should bottom out against distance spacer.viton seal.
Install cone key. Offer damper to cone and install crankshaft nut.Get the big socket and breaker bar out. Recommended torque is 150 lbs. I used a 3/4-inch breaker bar, with an extension and tightened two grunts.Install crank pulley. Install hex nut assembly. Project complete.This project is within the ability of most owners. Take your time on this. This is one of those projects that you can do a better job that the dealer.motorcycle auto oil seals choice materials.
The Jaguar V-12 crankshaft damper assembly is either an engineering masterpiece or another example of Jaguar overcomplicating an existing proven design. I suspect there is a bit of truth in both statements. The assembly works by having the crankshaft bolt force the damper against a collapsible cone that transfers the holding friction to the crankshaft nose. (Proper reassembly is critical). In addition the design uses a “distance spacer” to position the cone and provide a replaceable sealing surface for the crankshaft seal.
I butchered up an existing screwdriver to use in removing the old oil seal.motorcycle auto oil seals choice materials.
There are two indentations at either side of the cover that facilitates removal of the seal. The easiest method for removal is to simply punch a slot in the seal at the indentation and pry out the seal.rubber sealing.
Note: Carefully clean the seal mounting area. Any nicks incurred during the removal process must be addressed now.
All crank seals for the V-12 are identical. Jaguar initially listed a part number for the seal only for the early cars. That listing has been discontinued, and the only seal currently available from Jaguar includes a new “distance spacer”. It is also not cheap. Even from a third party supplier expect to pay approx. $70.00 US for seal and spacer. (Jaguar part number JLM 10613).motorcycle auto oil seals choice materials.
For those who hate to spend money, NAPA (auto parts chain in the US) sells just the seal for approx $10.00 US (part number 21098)
Pictured below is the old seal, old distance spacer along with the Jaguar seal and distance spacer.nok seal. The Jaguar seal has a rubber coating impregnating the outer band. This affords a better seal between the outer seal and the crankshaft cover. Interesting, it does not have the compression spring, which the original seal had and has become the norm for this type of seal.
Note the orientation of the old seal,it was installed with the lip out. This is the way it was removed, and based on everything I know, was installed backwards at the factory.
There are two ways to install this seal. Hammer in, or press it in. You can hammer it in, however close quarters and the possibility of damaging the seal precludes that idea. My recommendation is to press the seal in. I fabricated a press that uses the crankshaft bolt as leverage. I purchased a 2 to 1 1/2 inch galvanized pipe reducer from Home Depot. Any plumbing store will have this. The 2-inch side is exactly what I need to address the seal. The 2″ side will be used to press the seal in. The height of the reducer is critical. Measure 1 7/8 inch from the 2″ side and cut the pipe at exactly 1 7/8 inches. (Measure from the 2-inch side. Cut from the 1 1/4 inch side.)motorcycle auto oil seals choice materials.
I used a flat file to get the 2-inch surface perfectly flat. This is not absolutely necessary, however you might as well make this the right way.viton seal.
As seen in the photograph below the 2″ side of the pipe union mates exactly with the NAPA oil seal.The yellow arrow identifies the Jaguar seal.
The crankshaft bolt will be used to force the modified pipe union against the new seal thus pressing it into the crankshaft cover.
Inspect the crankshaft and collapsible cone keys. If there are any nicks incurred during removal of the keys, dress the keys up on a flat file.
In addition, make sure the keys fit the appropriate groves in the cone and damper.
Prior to installation, Oil the sealing surface of the crankshaft seal.
The NAPA seal has a standard uncoated metal outer ring with the usual compression spring around the sealing lip. If you are using the NAPA seal I recommend a thin coating of non-hardening Permetex around the outer perimeter on the seal. This will mask any slight imperfections that might occur as the seal is pressed in. If you are installing the Jaguar seal this step is not necessary due to the existing rubber coating on the seal ring.motorcycleauto oil seals choice materials.
Position the seal to the crankshaft cover. The seal in unidirectional, it must be installed with the lip towards the engine.
Make sure the seal is centered and slightly inside the mounting flange.
Position the “Press” over the outer ring of the seal and hand tighten the crankshaft bolt snug to the press.silicon seal.
Tighten slowly with a socket until the seal is flush against the crankshaft cover.
Make sure the new spacer is coated liberally with engine oil before installing. If installing the NAPA seal only, clean the distance spacer, oil, reverse and install. By reversing the spacer the oil seal lip is afforded a new surface to seal against.
The tolerance of the new spacer to the crank is miniscule. If it is not offered to the crank nose exactly square it will not go on. Do not force it. If necessary use the crankshaft bolt to move the spacer along the crankshaft. When seated, the spacer should protrude slightly in relationship to the crank seal.
Clean the crankshaft damper, cone and crank. All surfaces that the collapsible cone will come in contact with must be clean and oil free. Install crankshaft key. Offer cone to crankshaft making sure the crankshaft key lines up with the key slot in the cone.
Cone should bottom out against distance spacer.viton seal.
Install cone key. Offer damper to cone and install crankshaft nut.Get the big socket and breaker bar out. Recommended torque is 150 lbs. I used a 3/4-inch breaker bar, with an extension and tightened two grunts.Install crank pulley. Install hex nut assembly. Project complete.This project is within the ability of most owners. Take your time on this. This is one of those projects that you can do a better job that the dealer.motorcycle auto oil seals choice materials.
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