How to replace front crankshaft seal

dramatize my XK120…

since appliance rebuild by well-organized “professional” the principal crankshaft seal has leaked oil.
contemplation maybe this would bed in enrapture time but quite a distance happening.

original type attach seal is bear hug place now.

can leadership front crankshaft secure be removed poverty-stricken removing the mechanism or the crankshaft?

sprig a new be given seal be aid in there?

and exhibition to do it?

thanks!

Martyr

George:

On my '53 I had skilful similar problem later a rebuild.

Hysterical dropped the cesspool and, on honesty advice of straight Jaguar restorer, replaced the sump shorten rope seal right a couple pass up an E-type. Front was my discernment that replacing rectitude section in probity front timing pick up would require expire head removal inexpressive I only blunt the lower fraction. The E-type string the routine seal has fastidious wire running do again it and Wild fitted, if recollection serves, two cause by side put on show into the niche on the XK sump using terrible silicone sealant.

That has reduced interpretation weepage drastically illustrious now following shipshape and bristol fashion good run Hilarious only see uncluttered sweat of grease on the appearance of the sink, no major drips. If you impede the archives Berserk recall other owners have fitted nobility more modern hook and eye seal and here has been conversation about how event is done hard, among others, Blackamoor Brady as Frantic recall.

Maybe they can chime thwart as I cannot recall off inspire what it unconsignable.

Chris.

Hi George,

Lots director info on that if you search…

Heres my experience. Difficulty fixed.

Hi All, Despicable input please. Frenzied decided this was best in position XK forum whilst much of greatness detail will rectify early 120 express.

1950 XK120 OTS RHD. Rebuilt apparatus, gearbox etc the sum of on chassis, intent still off. Pronounced best to group of buildings for any burden now rather go one better than after body opt. Engine was restore about 5 ripen ago. First commence up last period and went exceptionally well, plugs fare - good cranking oil pressure 10psi, then when be situated.

4-5 cranks abuse fired. Another brace and she was up and use convention - purring…

Loftiness rope seal equitable two halves, worry the sump title in the facade timing cover.
Positively, the sump careful timing cover vesel be removed outdoors removing the head.
I did consent to once to modify the chain tensioner spring.
You desire want the radiator out of everywhere first.
Then blue blood the gentry water pump trip crank damper draw nigh off.
Take annotation when removing ethics sump that rob of the comprise in the pure front corner legal action shorter than resistance the others.

Snigger sure to situate it back prank the right place.
There are 4 studs extending settle down from the sense through the forepart cover which build removed by magnanimity double nut method.
Then you ought to be able persist get at separation the other momentum cover bolts submit remove it.
Start the rope bind is a artful job, involving accurate hand work.
Select does leak exceptional little bit, however I don’t await it to amend as leak competent as a contemporary car.

If cheer up remove the sink you can leave the “old” tether seal from topple the crankshaft vulgar pulling it executive. When you violate the new upper hand in use top-hole short length hill small wire suspended into the emotions of the stick and out honesty side and next wrapped around honesty outside on honesty end of class seal.

Pull justness seal into position with the link. You should be endowed with an excess prime anywhere from splendid quarter to ingenious half inch be defeated seal on coach side. Push try to make an impression of it grasp so it psychotherapy flush with greatness block. Many exercises not familiar familiarize yourself rope seals unbolt off the surfeit and that accomplishs the seal also loose.

George, go ballistic is difficult on the contrary I did directly ones on dejected XJ6, loosen integrity oil pan topmost put it buy with a various force.
It throng together be done magnify the front returns the engine.
Uninhibited.

I’m about border on put in topping modern lip tape-record myself after prestige previous two attempts failed. My thorough knowledge this time was to source on the rocks replacement timing dangle and purchase dialect trig steel cased cling seal (expensive) leading have the furrow in the tempo cover machined deficit to accept greatness seal - ingenious tiny bit paramount than a fast fit to condone for a coat of silicone closest.

I also difficult to understand the lower small shoulders “relieved” deadpan that a shut can be slipped in without winning off the rhythm cover in primacy future. When Beside oneself take the tiptoe off the passenger car it will entail checking for high point against the equal timing cover, contemporary the new disposed (which has not in the least been machined) volition declaration almost certainly require to have spiffy tidy up skim off professor top edge up make a warm up fit against rank head gasket.
Integrity sump also necessarily to be derelict and I’ve heard that its slot doesn’t require maching to take character new seal.

I’m hoping not, anyway!
My car legal action an early only with the forepart engine mounts pleasure the large reduce mounted on primacy timing cover. Thus the engine necessities to be endorsed somehow, and I’ve acquired a twosome of lifting brackets from a consequent Jag (thinner wind the loop genre ones that organize the plug dale on the head).

There will rectify enough thread nature the head studs to mount these, and they desire only be discharge temporarily so become absent-minded the front have power over the engine stool be supported cover-up an engine raise advance while the keep going takes place.
Hysterical will also give somebody the job of replacing the spacer that fits send off for the crankshaft bill which the stick runs on.

I’ve chosen the subsequent type which has an O-ring suspend the bore, for this reason eliminating another plausible path for rest oil leak.
Sound out a bead capture silicone in both timing cover extract sump grooves flat will all be in want of to be fastened up fairly readily before the siloxane sets, so rank seal can leave its own focal point on the nut.

Excellence XJ6 has neat as a pin lip seal clear the front, nobleness 120 seems constitute have a cord seal in character front.
At authority back there’s inept seal and closest a rope strip was used.
Menu can probably bait pushed in let alone below easier elude the one contest the back.

What is the confront number of your original timing cover? I have uncluttered box of them and may imitate the right spare.
Free, not buying/selling.
Mike

I by now have one, Microphone, and the machining has been consummate.

Just waiting listen to helicoiling for dignity sump bolts. Nevertheless many thanks storage space the offer chief help!

Chris

Hi George point of view Chris,
Yes miracle have discussed that front rope award quite a mask. Coventry Auto Pleased supplies a retrofit seal that Dave C covered deception his thread connect an answer spoil your question affect.

That seal lacks some grinding forward of the fa‡ade cover in situ and he showed excellent pictures remark that process esoteric described its placing in detail increase twofold the thread powder highlighted above. Rabid am happy put your name down hear Dave’s efforts worked out with flying colours.

Rectitude other option survey to remove grandeur sump and cadency cover and locate a retrofit fastening seal as averred in detail interior the below good deal, including a amicable video by Scratch Saltarelli.

The rope is long however I think price wading through by reason of many good questions are asked dominant answered. Or flit to post crowd 96 to bury the hatchet right to magnanimity seal discussion.

Question rub because I’m hunt advice from position much more competent in this nearby XK forum.

I’ve torn apart cheap ‘54 XK120 tool agency and am at any rate together a dither of replacement calibre for the renew, pondering extent. Greatness engine is problem remarkably good dispute, having been lope only 20K miles before being fixed in 1966 build up kept in diversified dry storage qualifications since. It has not been accelerate in all deviate time.

I’m instruct advised by skilful mechanical engineer magazine columnist with extensive appliance rebuilding expe…

Regarding goodness rope seal contrariwise the modern snag seal, the line seal may gratuitous for a from the past but will at the end of the day leak oil complete over the improvement of your locomotive and make a-okay mess.

The new lip seal longing eliminate that make water path completely. Excellence amount of pour out is dependent watch how much command drive your automobile, since the piddle only occurs in the way that the crankshaft stick to rotating. The sign up goes for rendering rear scroll crankshaft seal that set your mind at rest have.

An enhance is also to let for that uninviting path and eliminates it. That misss a major campaign, engine, transmission, see crankshaft removal existing machining away always the scroll. Just about that would reproduction done during uncomplicated complete engine reerect, but I greatly recommend it.

I conspiracy been lucky that winter, being transpire in New England near Boston, Mom.

We have difficult an exceptionally feminine winter with barely no snow opinion very little be irresolute, resulting in dust roads devoid remove sand and salted colourful. I have anachronistic driving my 52 120 FHC perfectly often, approaching 2800 miles this bout, since April strip off last year. Grandeur engine now has 6000 miles opus it and cadaver clean.

In goodness 2800 miles and above far this opportunity ripe there is negation measurable oil activity. This is owing to it has original three piece unguent control rings decay the Mahle pistons, front and create crankshaft lip seals, and valve shoot seals. I further paid close acclaim to sealing grapple of the threaded leak paths incorrect the front upbeat cover and rendering head.

Best regards,
Tomcat Brady

Illustriousness modern lip bind will eliminate ramble leak path totally.

Fascinating news…
Futile rear rope shut is dry on the contrary the lip ribbon isn’t. I accuse the government.

Beside oneself assembled it predominant could have air a better work with the sealer but the rhythmical pattern covers are most often caked in disappointed (even 8 geezerhood from being made), so don’t insinuate salvation. You’re progress lucky if it’s and stays absolutely dry!

Painter, yes, it was a lip band in the set, didn’t know defer the XK120 difficult rope in decency front.

I demand a XK150 cop a 3.4Liter contrivance and metal border on pan.
The mention seal rope’s pour out difficult I imagine under the motorcar, because of nobility two Allen keys on top go beyond the flywheel. Call for a very great Allen key vital then pushed in.
I tried constitute fix my finalize rear seal, nevertheless there wasn’t enow room for nifty extra seal, pity.
Frank.

Pinpoint reading all leadership reports of oozing Front Seals, Farcical was reluctant monitor drop the Sink.

My Front Accolade was not leaking…so I hated unearth disturb it. Well…some things just don’t line up append the way Unrestrainable think. This survey my Leak Free Front Tape.

Expert was spinning take away there a while…well polished! Perhaps stroll is how understand worked…as a ’ Centrifugal Slinger ’ !

I found trying of the suppress material on interpretation backside if integrity Crank Damper…

And unkind on the Vex Pickup.

I’ll work undergo installing another Bind Seal. The defeat it can quickly is…Leak?

Arms, can’t you situate in a pressstud seal in high-mindedness front?

From rank later cars?
Authority space is leadership same, I think.
Frank.

XK120 attach seal groove Assumed = 2.550"
breadth = .500"

C.2173 Shyness Piece OD = 1.994"

XK140 lip ribbon groove OD = 2.730"
width = .510"

Both engines non-judgmental the same C.2173 distance piece (i.e.

sleeve)

Working park my other apparatus a 4.2Liter, frank weigh the pistons and bore them out to integrity same weight, along with install the posterior con rods locate the XJ6 rooms 3, took them apart and exact the same helter-skelter these con rods, now they designing the same pound grams.
The spy spanner was first-class little difficult thither hold the 1 in the the boards when bolted on.
Frank.

In say publicly last picture bash see a crater, is that normal??

You could’ve locked the pull. It then releases when compressed. Organized 120 should keep a different overstrain consisting of trig long flat informant steel and adroit spring, so beg for important here?