Nathanwhit1 Posted 12 hours ago Share Posted 12 hours ago Evening all I’ve managed to do the first run out in the cruise liner ( yippee ) the steering is very heavy. I’ve checked the oil level and it was low so topped it up. I’ve greased everything up all ujs and king pins. Is it worth dropping the oil out of the steering box and draining the system and put all fresh oil in or what do people recommend to do ? Cheers everyone Quote Link to comment https://www.bigmacktrucks.com/topic/75273-power-steering-really-heavy/ Share on other sites More sharing options...
Joey Mack Posted 10 hours ago Share Posted 10 hours ago Does the steering pump have a filter inside of it ? I dont know what type it is, but some older trucks i worked on had belt driven pumps with a filter in the resevoir. I have never seen a truck like yours in person Quote Link to comment https://www.bigmacktrucks.com/topic/75273-power-steering-really-heavy/#findComment-571155 Share on other sites More sharing options...
Nathanwhit1 Posted 10 hours ago Author Share Posted 10 hours ago Tbh looks like it runs of back of the compressor. It’s the Mack e6 engine I think 305hp Quote Link to comment https://www.bigmacktrucks.com/topic/75273-power-steering-really-heavy/#findComment-571156 Share on other sites More sharing options...
Joey Mack Posted 10 hours ago Share Posted 10 hours ago Yep ok. I know that one very well.. ok.. carry on..... 🍻 Quote Link to comment https://www.bigmacktrucks.com/topic/75273-power-steering-really-heavy/#findComment-571157 Share on other sites More sharing options...
Joey Mack Posted 10 hours ago Share Posted 10 hours ago Check the lines for restrictions. Those break down internally and will restrict flow in a handful of ways.. if the lines are hard as steel you may just want to build new lines.. Quote Link to comment https://www.bigmacktrucks.com/topic/75273-power-steering-really-heavy/#findComment-571158 Share on other sites More sharing options...
Nathanwhit1 Posted 9 hours ago Author Share Posted 9 hours ago Sound will have a look cheers pal 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75273-power-steering-really-heavy/#findComment-571159 Share on other sites More sharing options...
Joey Mack Posted 8 hours ago Share Posted 8 hours ago 🍻 Quote Link to comment https://www.bigmacktrucks.com/topic/75273-power-steering-really-heavy/#findComment-571161 Share on other sites More sharing options...
cruiseliner64 Posted 7 hours ago Share Posted 7 hours ago 2 hours ago, Joey Mack said: Check the lines for restrictions. Those break down internally and will restrict flow in a handful of ways.. if the lines are hard as steel you may just want to build new lines.. Joey I was talking to Nathen earlier and told him I read on BMT somewhere the power steering on these use engine oil not hyd fluid.Can you confirm is this correct?? Paul Quote Link to comment https://www.bigmacktrucks.com/topic/75273-power-steering-really-heavy/#findComment-571162 Share on other sites More sharing options...
Joey Mack Posted 7 hours ago Share Posted 7 hours ago Yes. In that year. However. TRW systems in my time use ATF, and Sheppard use 15W40.. of course I make it sound simple. I expect some other variants to be posted.. i am not well versed on many systems. Quote Link to comment https://www.bigmacktrucks.com/topic/75273-power-steering-really-heavy/#findComment-571163 Share on other sites More sharing options...
cruiseliner64 Posted 7 hours ago Share Posted 7 hours ago 5 minutes ago, Joey Mack said: Yes. In that year. However. TRW systems in my time use ATF, and Sheppard use 15W40.. of course I make it sound simple. I expect some other variants to be posted.. i am not well versed on many systems. Thanks for that.I read on here that was the case.I found it strange because Id never heard of it before.... Paul Quote Link to comment https://www.bigmacktrucks.com/topic/75273-power-steering-really-heavy/#findComment-571165 Share on other sites More sharing options...
Joey Mack Posted 7 hours ago Share Posted 7 hours ago Yes sir. Really all oil is hydraulic fluid, really all fluids.. i have zero knowledge on trucks outside the States.. my guess is the pump construction determined the oil grade.. of course i have seen systems filled with the wrong oil or its mixed, and it still worked.. theres a couple guys here that can quote the book on this.. They are very smart.. Quote Link to comment https://www.bigmacktrucks.com/topic/75273-power-steering-really-heavy/#findComment-571166 Share on other sites More sharing options...
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