Can anyone please tell me where the block coolant drain is actually on them . have googled but bit vague . all the bolts look the same 93 HD81 4.2 diesel
hope this helps, though it looks like a real bitch unless youre pulling all the injector crap off
best of luck
2get1,
Dec 29, 2:34am
why do you need to find it ? surely taking off the bottom radiator hose would drain all the coolant out of the block aswell as the radiator.
andrewph,
Dec 29, 3:24am
It will be a chunky 14mm single hex gallery plug about 100mm up from the bottom edge of the block.
figjam25,
Dec 29, 5:21pm
Ok . cool . thank you guys . back out to look again . much appreciated
franc123,
Dec 29, 5:36pm
They are not equipped with block drains for no reason. Once the coolant level has fallen to the bottom of the water pump it won't drain any further, and with a north-south engine that of course is sloped back slightly in situ there will be a substantial amount of coolant still sitting in the bottom of the jackets at the rear of the engine It also enables far more effective flushing with it removed.
ozz1,
Dec 29, 9:36pm
coz he asked. :). and removing the bottom hose. wont drain the block. on most motors. let only a 1HDT :)
figjam25,
Apr 16, 5:03am
Yup did find it . sneaky little bugga it is to find . thank you all
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