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Northern Virginia Jeepers Association
November 14, 2018, 06:51:51 AM

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Author Topic: Water Pump Pulley Rub  (Read 162 times)
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d.miller11
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« on: November 09, 2018, 01:22:12 AM »

Hey Guys,

With my current engine rebuild going on, I finally got around to throwing the accessory's on.  I ran into an issue though.  The pulley for the water pump rubs against omix-ada water pump casing I bought and installed.  Has anyone else ran into this issue?  I'll probably just shim it and verify the belt is still centered on the pulley.  I'm just trying to figure out if this is an omix-ada issue, or if its wide spread.  I've installed 3 or 4 on this jeep already and never ran into this issue.  If its an Omix-ada issue, I'll just take a new pump they send me and stick it on the shelf just in case it fails later on.

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95 jeep YJ 4.0L, Ford 8.8, 32" BFG A/T, Metal Cloak Front and Rear Fenders
Jeepsnbuses
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The seller and trader of many things.
« Reply #1 on: November 09, 2018, 12:59:37 PM »

Hey Guys,

With my current engine rebuild going on, I finally got around to throwing the accessory's on.  I ran into an issue though.  The pulley for the water pump rubs against omix-ada water pump casing I bought and installed.  Has anyone else ran into this issue?  I'll probably just shim it and verify the belt is still centered on the pulley.  I'm just trying to figure out if this is an omix-ada issue, or if its wide spread.  I've installed 3 or 4 on this jeep already and never ran into this issue.  If its an Omix-ada issue, I'll just take a new pump they send me and stick it on the shelf just in case it fails later on.

Asking the silly questions...is the pulley on backwards?

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2002 TJ Sport
Tow rig: 1973 Thomas school bus RV conversion. It's slow.

- Adam
d.miller11
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« Reply #2 on: November 12, 2018, 05:40:02 PM »

Not a silly question at all, but no, it was not on backwards.  Putting it on backwards would not allow me to throw on the fan and clutch.  After talking with Omix-Ada, I took measurements and found that the flange for the pump was pushed on an 18th of an inch too far.  They're sending me a new pump.  So ill just throw the new pump on the shelf and shim the one that's on now.  too much of a PITA to replace this pump twice.

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95 jeep YJ 4.0L, Ford 8.8, 32" BFG A/T, Metal Cloak Front and Rear Fenders
overhead
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Crap, someone call Trevor.
« Reply #3 on: November 12, 2018, 07:54:50 PM »

Not a silly question at all, but no, it was not on backwards.  Putting it on backwards would not allow me to throw on the fan and clutch.  After talking with Omix-Ada, I took measurements and found that the flange for the pump was pushed on an 18th of an inch too far.  They're sending me a new pump.  So ill just throw the new pump on the shelf and shim the one that's on now.  too much of a PITA to replace this pump twice.

Would a puller be able to pull it out enough while it's still on?

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The only thing about a Yj that's reliable is its mechanic.

Joey to Mike- That's more like it! Never done.....just outta money at the moment.

atjeep-Every time a YJ passes inspection, an angel gets it's wings.
d.miller11
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« Reply #4 on: November 13, 2018, 01:16:23 AM »

Not a silly question at all, but no, it was not on backwards.  Putting it on backwards would not allow me to throw on the fan and clutch.  After talking with Omix-Ada, I took measurements and found that the flange for the pump was pushed on an 18th of an inch too far.  They're sending me a new pump.  So ill just throw the new pump on the shelf and shim the one that's on now.  too much of a PITA to replace this pump twice.

Would a puller be able to pull it out enough while it's still on?

I thought about trying that, but I didn't want to mess with it before I spoke with the company.  I also didn't want to risk messing up the seal around the pump shaft.  I wasn't sure if the flange somehow held the impeller on inside the pump or not.

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95 jeep YJ 4.0L, Ford 8.8, 32" BFG A/T, Metal Cloak Front and Rear Fenders
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