Backhoe front pump shaft help needed

Brokengun · Oct 3, 2014

I need some help Does any one know how the front mounted pump shaft for a Massey 3165 comes apart at the crankshaft?

[The fan belt is worn out/fell apart]

It’s the front hydraulic pump shaft set up used for a 200 MF loader.

My shaft has 4 bolts that connect a plate to the front crankshaft pulley then the shaft that is about 15” long goes into the front mounted hyd pump.

I can not get the shaft loose at the mounting plate at the crank pulley. I thought it was splinned but the picture in the model 200 MF loader manual appears to be threaded. I have tried with NO luck of getting it apart.

So does anyone know which way you need to turn this thing to get it loose?

I’ve tried going both directions. There’s NO room to get a good grip on the shaft.

So My hope is I can get a little more aggressive if I know the proper way to turn the shaft

Steve@Advance · Oct 3, 2014

http://www.ehow.com/how_8378255_adjust-belt.html

There's a product called "Adjust a Link". It replaces the belt with a linked type belt that can be wrapped around obstacles and connected together. I've heard good things about them, might be worth a shot.

Brokengun · Oct 3, 2014

Steve Thank you that's the kind of help I need. If I can not get this thing apart then I need a fall back. I have heard of those types of belts before but couldn't think of there name

Heat Houser · Oct 3, 2014

It is likely threaded as my brother's old backhoe was. As with any threaded drive, you need to turn it in the direction of rotation to get it apart.

Thinking of it another way, you need to turn it "faster" than the engine to get it to unscrew.

supergrumpy · Oct 3, 2014

H/F has them for $24, green, you only need about 2/3 of it

I used one for about 2 years and it was still going strong

McMaster Carr has a red one ,looks to be better quality

NCWayne · Oct 3, 2014

I've got one customer with a MF165 that has the front mounted pump. To work on their machine I found a piece of splined shafting that matched the splines in the drive shaft and welded it to an old 1/2 drive socket. This allows you to put the splined piece into the end of the drive shaft and unscrew it. It's a left hand thread. Usually you need some kind of shock to get it broken lose, but after that it will usually turn pretty free. One other piece of advice. Put some never seize on it when you put it back to make it easier the next time. Good luck.

Backhoe front pump shaft help needed

Brokengun

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Steve@Advance

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Brokengun

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Heat Houser

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supergrumpy

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NCWayne

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