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Problems replacing PS Pump.. questions

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Old Apr 23, 2016 | 06:07 PM
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Problems replacing PS Pump.. questions

I am replacing the PS pump on my dads truck.. Having issues getting the dang thing back on.. The new pump has some threaded bolt thing sticking out of the back about one inch so it catches on the motor mount and its keeping me from getting the pump in..The Ive tried removing two of the mounting studs so i can get past that but now it seems like maybe thats not the right way.. can I cut that threaded bolt off a little.? what am I missing??
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Old Apr 23, 2016 | 07:22 PM
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picture? i've replaced mine and have no clue what you're talking about.
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Old Apr 23, 2016 | 07:33 PM
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Originally Posted by sdseva
I am replacing the PS pump on my dads truck.. Having issues getting the dang thing back on.. The new pump has some threaded bolt thing sticking out of the back about one inch so it catches on the motor mount and its keeping me from getting the pump in..The Ive tried removing two of the mounting studs so i can get past that but now it seems like maybe thats not the right way.. can I cut that threaded bolt off a little.? what am I missing??
Some pump housings have a threaded bolt sticking out of the back of them, but ours did not. Its an alternate pump mount in a different vehicle where a bracket attached to the bolt. When you buy a new pump, you're supposed to transfer the threadless bolt from the oem Cummins pump to the replacement pump. Just unscrew one and put into another. Its there to keep the reservoir housing attached to the pump
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Old Apr 23, 2016 | 07:49 PM
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Originally Posted by NJTman
Some pump housings have a threaded bolt sticking out of the back of them, but ours did not. Its an alternate pump mount in a different vehicle where a bracket attached to the bolt. When you buy a new pump, you're supposed to transfer the threadless bolt from the oem Cummins pump to the replacement pump. Just unscrew one and put into another. Its there to keep the reservoir housing attached to the pump
curses!!! I already returned the core!! so can I just cut it off maybe??
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Old Apr 23, 2016 | 08:08 PM
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Originally Posted by sdseva
curses!!! I already returned the core!! so can I just cut it off maybe??
Should work. as long as it clears.
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Old Apr 23, 2016 | 09:02 PM
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Originally Posted by sdseva
curses!!! I already returned the core!! so can I just cut it off maybe??
Yes

Wizzer wheel will do, but pull the bolt out so you don't heat up any seal, if one exists ( can't remember )
Or a hack saw
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Old Apr 23, 2016 | 09:18 PM
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ugh... chopped it off... It fits!! then when I was tightening down the nuts I broke a corner of the mounting bracket.. was unsure how it happened till I removed the bracket and found that the input shaft thing was not clocked perfectly. now I know that the pump should seat with little to no resistance. Pretty lame day

putting that behind me.. where can i find the mounting bracket, seal and large o-ring?? dealership part maybe? Cummins perhaps?

I see beers in the near future...
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Old Apr 23, 2016 | 11:31 PM
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Most of the trouble, including broken ears on the vacuum pump can be avoided by coupling them on the work bench and installing to the timing case as an assembly.
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Old Apr 24, 2016 | 12:34 AM
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Originally Posted by j_martin
Most of the trouble, including broken ears on the vacuum pump can be avoided by coupling them on the work bench and installing to the timing case as an assembly.
That's how I do it. Only takes about 10 min max to remove the whole assembly.
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Old Apr 24, 2016 | 01:11 AM
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The ears break off if you forget to install the 3/8 thick washers on the rear inside studs before the pump is installed. They keep the alignment correct
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Old Apr 24, 2016 | 08:39 AM
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Originally Posted by NJTman
The ears break off if you forget to install the 3/8 thick washers on the rear inside studs before the pump is installed. They keep the alignment correct
i lost one of these when replacing my PS pump. didn't realize it until i had the pump almost complete back together. i used a big nut and just ground it down until it matched the other one. why dodge, why...
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Old Apr 24, 2016 | 08:58 AM
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From: Land of the Toxic Avenger
Originally Posted by j.fonder
i lost one of these when replacing my PS pump. didn't realize it until i had the pump almost complete back together. i used a big nut and just ground it down until it matched the other one. why dodge, why...
Same reason why we have cracking mounting plates for the steering gears...

Bean counters.....
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Old Apr 24, 2016 | 10:54 AM
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Originally Posted by NJTman
The ears break off if you forget to install the 3/8 thick washers on the rear inside studs before the pump is installed. They keep the alignment correct
The washers were there! Pretty sure the round plate with the cross in the middle wasnt seated properly.. Ill definitely be assembling the whole thing before installation. Of course its sunday and Ill never find a place that has a bracket so im out of luck..
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Old Apr 24, 2016 | 05:25 PM
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Originally Posted by sdseva
The washers were there! Pretty sure the round plate with the cross in the middle wasnt seated properly.. Ill definitely be assembling the whole thing before installation. Of course its sunday and Ill never find a place that has a bracket so im out of luck..
Pretty sure the "bracket" is the back casting of the vacuum pump.
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Old Apr 25, 2016 | 01:18 PM
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So... Looks like I might have to purchase an entire vacuum pump..? Cummins quoted me over $400
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