BIG END BUSH REPAIR . IS IT POSSIBLE ??

**gofer** · 18th May 2018, 08:17 AM

hi folks.
i'm 64 and grew up in an era when there was room to work around an engine in a car :-))
pre computers etc.
my old man was an "a" grade mechanic, did everything. not like todays specialists.

so, imagine a td5 stopped on side of road in middle of nowhere. driver pulled up because of a loud knocking noise. he has loads of spares and tools etc for "just in case " - "murphys law "
no mobile signal. thank you telstra.
goes through all the possibilities etc and concludes that a big end has gone. ( the why doesn't matter )

is it possible to change over big end shells working from below ?? my memory cells tell me i did something with leather as a temp repair many many moons ago.

on the same note, is it possible to change over a piston /conrod etc working from below ? ?
i'm not talking about the crankshaft bearing etc. that would be impossible me thinks.

food for thought.

thanks
gofer. :-)

**alien** · 18th May 2018, 09:14 AM

Have good look at the harmonic balancer /damper as they are known to break and make bad rattle.
Use the search box down the left bottom of the page to find previous threads on the subject.

**PhilipA** · 18th May 2018, 09:26 AM

I think it's a "hypothetical"

Regards Philip A

**p38arover** · 18th May 2018, 09:48 AM

Originally Posted by gofer

is it possible to change over big end shells working from below ??

Dunno about the Td5, but I've done it on the V8.

**Pippin** · 18th May 2018, 10:14 AM

Originally Posted by p38arover

Dunno about the Td5, but I've done it on the V8.

You can, Sump, Oil Pump and your there.

**gofer** · 18th May 2018, 10:22 AM

Originally Posted by Pippin

You can, Sump, Oil Pump and your there.

ok. thats the easy bit.
what about piston / conrod. ?? i've done it on diesel engines in boats. can it be done in td5 ?
gofer. :-)

**Pippin** · 18th May 2018, 11:10 AM

Originally Posted by gofer

ok. thats the easy bit.
what about piston / conrod. ?? i've done it on diesel engines in boats. can it be done in td5 ?
gofer. :-)

No it has to go out the top.
Nick

**p38arover** · 18th May 2018, 11:37 AM

Originally Posted by gofer

what about piston / conrod. ?? i've done it on diesel engines in boats. can it be done in td5 ?

Why would you want/need to remove the piston/conrod assy to change the big end bearings?

**bblaze** · 18th May 2018, 03:05 PM

rolled a set of crank bearings in more than once on bigger diesel but never a td5, just put a T shaped split pin in the oil gallery and roll the crank until the old shell comes out and then wind the new one in.
cheers
blaze

**kelvo** · 18th May 2018, 06:00 PM

You can replace the big end bearing shells from underneath. That is how the LR workshop manual tells you to do it. The engine stays in the car and the head doesn’t need to be removed.

I’ve been contemplating replacing mine as a preventative maintenance measure (It has currently have 295,000Km), but I’ve never heard of a big end failing on a Td5.

You would need to remove the head and the sump to remove a con rod or piston.

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