western Posted February 28, 2012 Share Posted February 28, 2012 I'd have to pull the casing off my oil filter head to check if my 200tdi has any washers, forgotten if there were any in there, when I had to replaced the casing. Quote Link to comment Share on other sites More sharing options...
sirjames0_1 Posted February 28, 2012 Share Posted February 28, 2012 Had mine off at weekend- just 1 washer on mine (200tdi). Quote Link to comment Share on other sites More sharing options...
dailysleaze Posted February 28, 2012 Share Posted February 28, 2012 There were 2 on my 300Tdi Quote Link to comment Share on other sites More sharing options...
Snagger Posted March 6, 2012 Share Posted March 6, 2012 The washers act as the valve on the system. The oil is supplied directly from the pump at spring end, in-line with the thermostat, and from the oil cooler via the opposite end. When cold, the oil stat contracts and the spring moves the washer out from the block, past the housing exit port to the filter's outer ring. As the temperature increases, the stat expands and pushes the washer inwards against the spring, past the filter port, preventing the direct flow from the pump and permitting the indirect flow via the oil cooler. I have just one washer on my 200Tdi and 19J. Two may be fitted on the 300 Tdi if the internal configuration of the filter port is different - the 12J, 19J and 200Tdi share the same filter housing, oil stats and pump, but the 300Tdi has a different housing and pump. It could just be a fault, though. It will restrict oil flow. I'd remove them and would fit a smaller diameter washer of similar thickness and one original washer to ensure the least resistance when the stat is open. Make sure the smaller washer goes to the unsprung end if you do this. Quote Link to comment Share on other sites More sharing options...
nickwilliams Posted March 6, 2012 Share Posted March 6, 2012 Two on my 300 TDI as well, IIRC. Nick. Quote Link to comment Share on other sites More sharing options...
djsparky22 Posted July 14, 2018 Share Posted July 14, 2018 Hello, Does the little thermostat needle sit in the entrance of the housing hole or should it be able to fit down it? My old thermostat can slide in and out of the housing hole where as a new thermostat will not. Any thoughts? Mark…. Quote Link to comment Share on other sites More sharing options...
western Posted July 14, 2018 Share Posted July 14, 2018 the pin on the oil stat should be uppermost see page 183 in http://www.retroanaconda.com/landrover/parts_books/110/3_engine_200TDI_300TDI_V8_p168-299.pdf Quote Link to comment Share on other sites More sharing options...
djsparky22 Posted July 14, 2018 Share Posted July 14, 2018 Hello, apologies I am not quite sure what you mean by uppermost? The pin on my old oil stat can freely slide in & out whereas a new one sits simply at the entrance of the hole & will not fit any further in. It suggests there is a very minimal diameter difference between a new pin & the old one. Mark.... Quote Link to comment Share on other sites More sharing options...
western Posted July 15, 2018 Share Posted July 15, 2018 hope this helps, by Uppermost I mean the pin on oil stat is at the top/highest. in my short video the adaptor housing is stood with the centre hole the pin fits in visible, then its bolted onto oil filter head like the last photo. WP_20180715_08_09_31_Pro.mp4 Quote Link to comment Share on other sites More sharing options...
djsparky22 Posted July 15, 2018 Share Posted July 15, 2018 On 2/28/2012 at 11:51 AM, Frogland said: I'm in the process of changing the o ring and i noticed there are 2 washers sitting between the spring and the bulb and there doesn't seem to be any mention of them in the parts catalogue and diagram. I've never had any oil temp pressure problems but am curious to know why they're there. Hello, Does anyone know the part number for the spring in the above picture, as I have been supplied the wrong spring twice now & I cannot see the number anywhere!?! Mark.... Quote Link to comment Share on other sites More sharing options...
western Posted July 15, 2018 Share Posted July 15, 2018 Pretty sure this is the correct spring, all the 4 cylinder diesel engine [except 300tdi] use the same oil filter head & oil stat fittings when engine has the oil cooler fitted https://www.johnrichardssurplus.co.uk/land-rover/defender-1985/cooling-heating/land-rover-oil-cooler-bulb-spring-erc3727.html Quote Link to comment Share on other sites More sharing options...
western Posted July 15, 2018 Share Posted July 15, 2018 Posts merged Quote Link to comment Share on other sites More sharing options...
Jocklandjohn Posted July 16, 2018 Share Posted July 16, 2018 (edited) On 2/28/2012 at 11:51 AM, Frogland said: I'm in the process of changing the o ring and i noticed there are 2 washers sitting between the spring and the bulb and there doesn't seem to be any mention of them in the parts catalogue and diagram. I've never had any oil temp pressure problems but am curious to know why they're there. I had those washers in mine too and the local independent LR garage (huge experience) had never seen them before either. Edited July 16, 2018 by Jocklandjohn Quote Link to comment Share on other sites More sharing options...
western Posted July 16, 2018 Share Posted July 16, 2018 my 200tdi has one washer on that spring, which is as it can from LR, I know this because I bought my engine brand new. Quote Link to comment Share on other sites More sharing options...
simonb Posted July 16, 2018 Share Posted July 16, 2018 Those washers are supposed to be there, as the oil gets hot, the pin protrudes which moves the body of the thermostat back and with it the washers which then close off/or uncover (can't remember which way round it is) a port in the bore, to allow the oil to flow through the cooler. The washers are like a mini piston/seal in the cylinder of the housing that the thermostat sits in. Quote Link to comment Share on other sites More sharing options...
Snagger Posted July 16, 2018 Share Posted July 16, 2018 Mine had a washer, but removing it helped warm oil pressure without affecting temperature. I think they were later deleted, but not sure. I couldn't find it on the parts diagram or workshop manual. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.