diggin dirt Posted July 5, 2019 Share Posted July 5, 2019 i changed my filters and tried air in the tank with input line on injector off . not having much luck after 2 hrs of blowing. where can i get a hand pump that screws into the top of my fuel pump? i am an old guy and not savy on computer. thank you Quote Link to comment https://www.bigmacktrucks.com/topic/58015-need-fuel-filter-primer-pump-for-1977-rd/ Share on other sites More sharing options...
Rob Posted July 6, 2019 Share Posted July 6, 2019 2 hours ago, diggin dirt said: i changed my filters and tried air in the tank with input line on injector off . not having much luck after 2 hrs of blowing. where can i get a hand pump that screws into the top of my fuel pump? i am an old guy and not savy on computer. thank you Did you prefilll your filters before installing them? Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/58015-need-fuel-filter-primer-pump-for-1977-rd/#findComment-427073 Share on other sites More sharing options...
JoeH Posted July 6, 2019 Share Posted July 6, 2019 (edited) Your local Mack dealer sells them. They just might not be smart enough to look them up. Edited July 6, 2019 by JoeH Quote Link to comment https://www.bigmacktrucks.com/topic/58015-need-fuel-filter-primer-pump-for-1977-rd/#findComment-427075 Share on other sites More sharing options...
diggin dirt Posted July 6, 2019 Author Share Posted July 6, 2019 no , i did not fill filters first because i was told it would not be filtered properly even though i do have a filter on my off road diesel tank outside on stand Quote Link to comment https://www.bigmacktrucks.com/topic/58015-need-fuel-filter-primer-pump-for-1977-rd/#findComment-427123 Share on other sites More sharing options...
diggin dirt Posted July 6, 2019 Author Share Posted July 6, 2019 i will call Mack at Enid okla monday and see . thank you guys for responding Quote Link to comment https://www.bigmacktrucks.com/topic/58015-need-fuel-filter-primer-pump-for-1977-rd/#findComment-427124 Share on other sites More sharing options...
Rob Posted July 6, 2019 Share Posted July 6, 2019 You need to prefill them. 1 Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/58015-need-fuel-filter-primer-pump-for-1977-rd/#findComment-427125 Share on other sites More sharing options...
JoeH Posted July 7, 2019 Share Posted July 7, 2019 You don't HAVE to, but it makes life harder if you don't. A lot less pumping on a hand pump if they're prefilled. Pump until you hear fuel splashing back in the tank via the return line. Then floor it and crank it til it's running. Ease off the throttle as it smooths out and can idle on its own. Quote Link to comment https://www.bigmacktrucks.com/topic/58015-need-fuel-filter-primer-pump-for-1977-rd/#findComment-427183 Share on other sites More sharing options...
fjh Posted July 7, 2019 Share Posted July 7, 2019 23 hours ago, diggin dirt said: no , i did not fill filters first because i was told it would not be filtered properly even though i do have a filter on my off road diesel tank outside on stand you can safely fill the primary filter! Quote Link to comment https://www.bigmacktrucks.com/topic/58015-need-fuel-filter-primer-pump-for-1977-rd/#findComment-427199 Share on other sites More sharing options...
Rob Posted July 7, 2019 Share Posted July 7, 2019 2 hours ago, fjh said: you can safely fill the primary filter! I've always dumped the old filters into a clean jar and after checking for water and none found, dump the contents into the new filters straining through cheese cloth and a funnel. If water is present it goes in the waste oil receiver. Then the tank bottoms get drained. Not prefilling filters sounds like a good way to get "tennis elbow or tendonitis" to me. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/58015-need-fuel-filter-primer-pump-for-1977-rd/#findComment-427208 Share on other sites More sharing options...
diggin dirt Posted July 8, 2019 Author Share Posted July 8, 2019 anyway, i ordered a hand pump, right now i have nothing but a little air pressure in the tank with no luck, scared to put too much pressure. when the pump gets here i am going to try a little air pressure with the pump, if that dont work i am going to fill the primary, if that dont work i will fill the secondary , right now i have no hand pump or any way to prime the system except for air pressure in the tank. thank you guys for responding. Quote Link to comment https://www.bigmacktrucks.com/topic/58015-need-fuel-filter-primer-pump-for-1977-rd/#findComment-427264 Share on other sites More sharing options...
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