DEFENDER2.NET - View topic - 300TDi crankshaft nose oil seal leak

↓ Advertise on Defender2 ↓

Home · FAQ · New Posts · My Posts · PMs · Search · Members · Map · Calendar · Profile · Donate · Register · Log In

Home > Tdi > 300TDi crankshaft nose oil seal leak

Page 1 of 1

Print this entire topic ·

MercianRover

Member Since: 07 Apr 2022
Location: Culworth
Posts: 158

1998 Defender 110 300 Tdi CSW Java Black

300TDi crankshaft nose oil seal leak

Hi,
any caveats or special tools to help replacing the inner and outer oil seal for the timing cover on a 300TDi?

Mine has had a minor leak for too long and I plan to DIY rather than trust to a garage.

Intent is to use genuine /corteco oil seals.

Anything else I should be aware of?

12th Jun 2025 1:12pm

I Like Old Skool

Member Since: 23 Feb 2015
Location: Manchester
Posts: 856

1994 Defender 110 300 Tdi ST Coniston Green

Are you aware that replacing the crank oil seal involves removing the timing belt? Time for new belt and idler/tension pulleys plus setting up the timing.

13th Jun 2025 3:37pm

sako243

Member Since: 08 Jul 2014
Location: Wales
Posts: 1247

1994 Defender 110 300 Tdi CSW Alpine White

There's an O ring in there as well which is more for sealing the oil. The seal stops crap going into the sump, the O ring helps stop the oil coming out.

Seating the seal can be a bit of a

but using two crank sprockets and the crank pulley bolt it can be driven in slowly and evenly. Ed
82 Hotspur Sandringham 6x6
95 Defender 110 300Tdi

13th Jun 2025 10:32pm

I Like Old Skool

Member Since: 23 Feb 2015
Location: Manchester
Posts: 856

Here's what I have recorded from the last time I did the timing belt in 2015 (now overdue again!).

Timing belt kit STC4096LG
Timing Belt ERR1092 Genuine Dayco
Tensioner LHP100860 Genuine INA
Idler LHV100150 Genuine INA
Crank Gear LHH100660 (with machined sides)
Gasket ERR7293
ERR4576 outer cover dust seal
ERR4575 - Inner crankshaft oil seal
ERR4710 - O-Ring

14th Jun 2025 12:25am

MercianRover

Member Since: 07 Apr 2022
Location: Culworth
Posts: 158

I Like Old Skool wrote:
Are you aware that replacing the crank oil seal involves removing the timing belt? Time for new belt and idler/tension pulleys plus setting up the timing.

Yep, thank you

17th Jun 2025 8:34am

MercianRover

Member Since: 07 Apr 2022
Location: Culworth
Posts: 158

I Like Old Skool wrote:
Here's what I have recorded from the last time I did the timing belt in 2015 (now overdue again!).

Timing belt kit STC4096LG
Timing Belt ERR1092 Genuine Dayco
Tensioner LHP100860 Genuine INA
Idler LHV100150 Genuine INA
Crank Gear LHH100660 (with machined sides)
Gasket ERR7293
ERR4576 outer cover dust seal
ERR4575 - Inner crankshaft oil seal
ERR4710 - O-Ring

Thank you, very useful!

17th Jun 2025 8:35am

Page 1 of 1

All times are GMT + 1 Hour

Jump to

< Previous Topic | Next Topic >

Posting Rules

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum