pmccarthy Posted December 30, 2015 Posted December 30, 2015 My usually reliable Fergy 135 has dumped its coolant into the sump. I pulled the head and had it tested and skimmed, then reassembled with new oil and filter. Ran it today and there is a lot of coolant in the sump again. It is a dry sleeve Perkins donk so can't be a sleeve corrosion problem. I cant think why it might have cracked the block. Nest step is to pull the water pump and check that the back plate hasn't corroded through. Then I am stumped. You blokes seem to have a lot of mechanical nouse - so any ideas? If you can make aeroplanes fly then a 3 cylinder diesel should be easy.
cooperplace Posted December 30, 2015 Posted December 30, 2015 Worked on lots of engines but never a Fergy. Presumably the testing for the head included for cracks? The water pump idea sounds feasible. At least you don't have to decide if you can make it to the strip or not when this engine fails.
kaz3g Posted December 30, 2015 Posted December 30, 2015 The liners are quite fragile...did you pull them? Kaz
turboplanner Posted December 30, 2015 Posted December 30, 2015 PM it might pay to ask this on a Ferguson forum, or historic tractor forum; they should be on to it in a minute. I haven't worked with the diesel.
Tomo Posted December 30, 2015 Posted December 30, 2015 Easiest thing to do is drop the sump off and pressurize the radiator/cooling system and see if it's dripping out anywhere. If it's corrosion of the bore (still a possibility) that will also indicate which one it's coming from. I'm pretty sure the head bolts go into water jackets on those...? Sometimes if it was installed without sealant on the thread sometimes it can leak out that way, fairly rare but has happened. How'd the block look when you had it apart, clean and flat?
planesmaker Posted December 30, 2015 Posted December 30, 2015 How are the welsh plugs? Do you know where they ALL are? Sorry I haven't worked on a fergy just something to check.
pmccarthy Posted December 30, 2015 Author Posted December 30, 2015 Hi everyone thanks for the thoughts. Pulled the water pump this morning and discovered the PO (who rebuilt the engine) had mounted it onto the alloy timing case without a fibre backing plate. So the water had corroded through into the timing case. But it has taken 12 years to do so. Problem solved (I hope).
hihosland Posted December 31, 2015 Posted December 31, 2015 "Wouldn't have happened on a Jab!" quothTurbs Not if it takes 12 years, no
brucechurch Posted January 1, 2016 Posted January 1, 2016 There is a 1/2 inch BSP plug in the head that also rusts out replace with brass not sure if you have to remove rocker shaft
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now