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Changing rear crankshaft oil seal on a 3.4 C2 - big job?

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8 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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YOUR RESEARCHChanging rear crankshaft oil seal on a 3.4 C2 - big job?

Leading reported evidence

Repair times

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Suggestion

Also, be a little wary of the official repair times which are for newish cars and don't legislate for corrosion etc.

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Changing rear crankshaft oil seal on a 3.4 C2 - big job?
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Leading evidence: 'Repair times' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Repair times' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Replace gearbox in and out takes the time

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

The clutch change, gearbox in and out takes the time.

Original post Read captured discussion
Changing rear crankshaft oil seal on a 3.4 C2 - big job?

Replace rear crankshaft oil seal in a 996 3.4 c2

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

how long, roughly, would it take a skilled mechanic to change the rear crankshaft oil seal in a 996 3.4 C2?

Original post Read captured discussion
Changing rear crankshaft oil seal on a 3.4 C2 - big job?

Replace slightly weepy one

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Just that we've come across quite a lot of exaguration over the necessity to change a slightly weepy one.

Original post Read captured discussion
Changing rear crankshaft oil seal on a 3.4 C2 - big job?

Use of all usual workshop/garage facilities and tools

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

Assume full use of all usual workshop/garage facilities and tools.

Original post Read captured discussion
Changing rear crankshaft oil seal on a 3.4 C2 - big job?
Frequently discussed actions (5)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Repair times

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Also, be a little wary of the official repair times which are for newish cars and don't legislate for corrosion etc.

Original post Read captured discussion
Changing rear crankshaft oil seal on a 3.4 C2 - big job?

Replace gearbox in and out takes the time

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

The clutch change, gearbox in and out takes the time.

Original post Read captured discussion
Changing rear crankshaft oil seal on a 3.4 C2 - big job?

Replace rear crankshaft oil seal in a 996 3.4 c2

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

how long, roughly, would it take a skilled mechanic to change the rear crankshaft oil seal in a 996 3.4 C2?

Original post Read captured discussion
Changing rear crankshaft oil seal on a 3.4 C2 - big job?

Replace slightly weepy one

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Just that we've come across quite a lot of exaguration over the necessity to change a slightly weepy one.

Original post Read captured discussion
Changing rear crankshaft oil seal on a 3.4 C2 - big job?

Use of all usual workshop/garage facilities and tools

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

Assume full use of all usual workshop/garage facilities and tools.

Original post Read captured discussion
Changing rear crankshaft oil seal on a 3.4 C2 - big job?
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

8 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 911uk: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T133652Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi gents, I usually don't post in 996 that much but I have a question: how long, roughly, would it take a skilled mechanic to change the rear crankshaft oil seal in a 996 3.4 C2? What big jobs are involved in this process? Assume full use of all usual workshop/garage facilities and tools. Cheers!

POST 2Original post

Tip - about 5 hours Manual - 4 hours Richard H would be the best to ask

POST 3Original post

The seal takes five minutes. The clutch change, gearbox in and out takes the time.

POST 4Original post

You need a special tool to insert the seals fully worth checking to see if its been done at an OPC in the last 2 years as you have a 2 year warranty on parts, so if its been done and needs doing again you might get it done for free

POST 5Original post

On a Tip you have to remove the complete engine and transmission in one, whereas on a manual you can remove the transmission by itself. Book time for a Tip is over 8 hours, and a whisker under 5 hours for a manual. Edit: Correction - on a 3.4, if you have the correct tooling, it appears that you can remove the transmission by itself. On the 3.6 with the Mercedes box, the workshop manual says to remove engine and gearbox together.

POST 6 / ORIGINAL POSTEROriginal post

thanks for the replies. It hasnt been done before as far as anyone can see so the warrenty thing is a no-no. what is the special tool that is needed? can you point me in the direction of this item please? cheers Tim

POST 8Original post

Hi Richards spot on in that you can remove a tip gearbox on a 3.4 but we find its easier to drop the engine & gearbox in one. Are you sure it really needs doing ? Just that we've come across quite a lot of exaguration over the necessity to change a slightly weepy one. Also, be a little wary of the official repair times which are for newish cars and don't legislate for corrosion etc. and don't cover road testing etc. Grant

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