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1993 E350 7.5 Motorhome - Issues with Water Pump Install

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1993 E350 7.5 Motorhome - Issues with Water Pump Install

  #1  
Old 02-17-2013, 08:59 PM
E30tdf
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1993 E350 7.5 Motorhome - Issues with Water Pump Install

I need some advice Guys! Need to have my Motor home ready to travel by Monday night 2/18/2013.

I've been fighting installing a new water pump in my EFI 460 for 2 days.

The main issue is that 2 piece lower hose. The short one (and I have purchased 2 different manufacturer's version of that hose) does not want to seat all the way onto the water pump pipe. The hose inside diameter just won't let me stretch the hose over that inlet pipe no matter whether I try attaching it to the fixed pipe on the block 1st or attaching it to the pump 1st on the bench. As a result I can't get the water pump lined up to engage the bolts to the front cover/block.

I'm trying to do this with the radiator in the truck so as not to disturb the oil cooling lines, trans cooler lines and A/C lines.

How have you solved this tight hose issue? Room to work is a real issue also, as you would know if you have worked on one of these vans.

I need a hose stretcher of some sort to open up that short hose inside diameter IMHO!

What a PIA!

Tom
 

Last edited by E30tdf; 02-17-2013 at 09:03 PM. Reason: clarity
  #2  
Old 02-17-2013, 11:19 PM
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I don't have a 460 not have I experienced your exact problem, but lubricating the inside of the hose with anti freeze does wonders sometimes.
 
  #3  
Old 02-18-2013, 12:03 AM
E30tdf
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Size Differential

The pipe is 1/4 larger in diameter than the hose ID. To fit that hose over the pipe will take quite a lot of stretching.

Tomorrow, I hope to go to HF and get an exhaust pipe stretcher and using that and heat from a hair dryer or heat gun, try and increase the inside diameter of the hose to be closer to the water pump pipe size.

Wish me luck. I've never seen a lower hose configuration like this one and hope to never see another...:-)
 
  #4  
Old 02-18-2013, 12:13 AM
joshofalltrades
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i also don't have a 460, but do have some general experience. i like to lube any difficult hoses with grease, or if you don't like the idea of grease, something like vaseline should work quite well. anything that'll stay on there as you wrestle it into place.

on smaller hoses, i often insert a pair of pliers into the tip of the hose then pull outward on the handles of the pliers, stretching the hose a bit. you might be able to rig up something similar enough in the required size, maybe two pieces of steel bar that you pull apart in there....
 
  #5  
Old 02-18-2013, 10:03 AM
E30tdf
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Tried Lubrication

I've gone through all the lube ideas including the vasoline and no go. I removed the Oil Filter bracket from the engine this morning so I can work this issue on the bench and get more leverage. I boiled the hose for a while this morning and tried pushing it onto the pump...No Go again!

So as soon as the dealers are open I will be at their door hose and pump in hand and see if they have a better fitting hose. The two I have tried so far are after market. The 1st was Gates brand. The 2nd came from AutoZone; I forget the brand. The pipe is a full 1/4 inch larger than the ID of those hoses. Stretching the hose that much is the issue. We will see if the Ford OEM part is the same diameter as what I have in hand.
 

Last edited by E30tdf; 02-18-2013 at 10:05 AM. Reason: clarity
  #6  
Old 02-18-2013, 11:12 AM
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You likely have the wrong water pump.

Water pumps for 460's prior to Feb 1 92 are 2 inches diameter on the water outlet. After Feb 1 92 they are 1.75 inches.

Don't forget the back-plate when putting the new pump in!

Edit to add: Double check the angle of the outlet on the new and old pumps. It should be the same between them. The older pumps point straight up and the new pumps angle towards the right when installed. They need to be the same.
 
  #7  
Old 02-19-2013, 04:43 PM
mustangman
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if your talking about that short hose that bolts up to the heat exchanger whose job is to cool the motoroil with the radiator antifreeze,, you have to remove that square box from the ironcast housing that screws in the engine oil filter hole, that box is bolted on the casting with only two 5/16 or 3/8 small bolts one on each side,you might not see them cause of the sludge, those coolers leak oil cause there is two rubber oil rings that go in between the box and casting,,, you really dont need to remove the whole casting from the block , just that square rectangle shaped box that the short hose bolts up to,,, i got rid of that exchanger as its known to fail and leak antifreeze in the oil,, just put a remote oil filter, theres a thread on this site as heat exchanger failure on how to switch over to a remote oil filter, if you dont remove that box youll have a btch getting that hose on,,,
 
  #8  
Old 02-19-2013, 11:26 PM
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It's still a shock to me when the manufacturer of cars no longer supply parts for it.

I by-passed the whole issue by installing the oil filter bracket from my 86 F250. At some point down the road I'll install an after market oil cooler.

The whole issue was caused by a mickey mouse half backed oil cooler Ford put on this model.

Thanks for reading amd sharing in my grief and for the info and opinions!
 
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Old 11-08-2018, 06:27 PM
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Thanks for that post, Mustangman. That is exactly what I was trying to figure out.
 
  #10  
Old 11-09-2018, 10:54 AM
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Trying to figure out why you're trying to install the hose on the pump before the pump is bolted to the engine.
 
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