mechohaulic Posted 11 hours ago Share Posted 11 hours ago Is the hand primer for the 400 still available; this one is worn/sloppy. don't recall ever rebuilding the old style on 673's. haven't contacted Mack yet since the answer will be :: need vin numbers etc. Quote Link to comment https://www.bigmacktrucks.com/topic/75860-e-9-400-rw-mack-prime-loss/ Share on other sites More sharing options...
terry Posted 10 hours ago Share Posted 10 hours ago Isn’t it just a o-ring on the plunger and two plastic check valves ? Terry 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75860-e-9-400-rw-mack-prime-loss/#findComment-580832 Share on other sites More sharing options...
mechohaulic Posted 2 hours ago Author Share Posted 2 hours ago 8 hours ago, terry said: Isn’t it just a o-ring on the plunger and two plastic check valves ? Terry haven't taken it apart yet, it's real worn. not even check valves looked at yet . to get fuel to system the primer spilled more fuel then pumped. Quote Link to comment https://www.bigmacktrucks.com/topic/75860-e-9-400-rw-mack-prime-loss/#findComment-580860 Share on other sites More sharing options...
mechohaulic Posted 2 hours ago Author Share Posted 2 hours ago reason I was asking if it's a part still available. thanks for reply. the owner (good person ) can investigate ;I'm a no charge just helping him out. mentally it's my therapy also. Quote Link to comment https://www.bigmacktrucks.com/topic/75860-e-9-400-rw-mack-prime-loss/#findComment-580861 Share on other sites More sharing options...
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