Thomas 173hl

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robert886

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Jun 13, 2016
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Hey everyone new to this site, was searching for information and came across alot of great threads here. I recently purchased a thomas 173hl and tore into taking all floor pans etc off and cleaning with a high heat pressure washer, unfortunately I have come across alot of issues with this. I have printed out a parts manual however still cannot find what year it is. The model number is A402173hl serial number lk000480 First being that the lower pins that go intot the bucket on the quick attach are very sloppy so the bucket really shifts when you tilt the bucket forward. Also while looking at that i realized that the two hydraulic rams going to the quick attach are bent :S which i have no idea what to do and the pins where they attach to the quick attach are wrong and do not even reach all the way through maybe how the rams got bent? Second issue would be diesel leak from the top of the injector on the motor around the flare nut attaches onto two of them Third would be the auxillary hydraulics even though something happened to the quick connects to the lines were capped off I found an electronic actuator on the hydraulic box with wires that come the left had control, they have been cut and the rocker switch does not move where your left thumb sits, any idea if someone makes a new hand grip with the rocker switch? and how to find out the wiring configuration for the actuator? Fourth thing, it calls for 10w30 in the chain drives and for the hydraulic fluid, can I use a regular hydraulic fluid like an aw32 or aw46 instead? Any help would be very much appreciated. No dealing in BC and have not found anyone that knows about thomas.
 
Wow, you have some work ahead of you.
The rams can be straightened some, or you can get new sticks made and eyes welded on. My first machine had a bent stick, i made a new one and gland, wlrked well. Don't run it too long with bent rods, or you will wollow out the gland nuts.
The attachment plate pins, they do wear, you will need to make or buy new ones to take the play out.
You can use hydraulic oil, i never remember what one is havier, i thought 46 was the closest to 10W30, you need the heavier weight for a hydrostatic pump.
 
Wow, you have some work ahead of you.
The rams can be straightened some, or you can get new sticks made and eyes welded on. My first machine had a bent stick, i made a new one and gland, wlrked well. Don't run it too long with bent rods, or you will wollow out the gland nuts.
The attachment plate pins, they do wear, you will need to make or buy new ones to take the play out.
You can use hydraulic oil, i never remember what one is havier, i thought 46 was the closest to 10W30, you need the heavier weight for a hydrostatic pump.
The AW46 is compatible with all Thomas hydraulic components, both past and current. The Thomas skid steer maintenance schedule requires the hydraulic reservoir and final drive hydraulic oil to be changed at 1000 hours – if you prefer to use AW46 hydraulic oil in your machine at this point, we suggest a complete system drain and flush. It is critical that all previously used oil is removed from the hydraulic system as these oils are not compatible. Please refer to the Thomas repair manual for the proper flushing procedure for your machine.
 
Wow, you have some work ahead of you.
The rams can be straightened some, or you can get new sticks made and eyes welded on. My first machine had a bent stick, i made a new one and gland, wlrked well. Don't run it too long with bent rods, or you will wollow out the gland nuts.
The attachment plate pins, they do wear, you will need to make or buy new ones to take the play out.
You can use hydraulic oil, i never remember what one is havier, i thought 46 was the closest to 10W30, you need the heavier weight for a hydrostatic pump.
Thanks for the reply. I called thomas in new brunswick and just decided to ask if they had replacement rods and they do. With not having a dealer here in bc they willing to offer me a discount which is great, new rod is about $180 each and the seal kits are about $70. I called grizzly seals here in langley bc with the seal kit number they have them but are more expensive than ordering from thomas. I have not run this machine for more than 30 minutes since i got it as I tore it apart right away and started painting and repairing. How do you know if the gland nut is wore out? I do not know much about the inner workings of hydraulics.
 
Thanks for the reply. I called thomas in new brunswick and just decided to ask if they had replacement rods and they do. With not having a dealer here in bc they willing to offer me a discount which is great, new rod is about $180 each and the seal kits are about $70. I called grizzly seals here in langley bc with the seal kit number they have them but are more expensive than ordering from thomas. I have not run this machine for more than 30 minutes since i got it as I tore it apart right away and started painting and repairing. How do you know if the gland nut is wore out? I do not know much about the inner workings of hydraulics.
I need to replace about 80% of the hoses on this machine so i will be draining most of the fluid between that and emptying the tank and filter, the guys in industrial at the parts store said aw46 is the thicker one but wanted an opinion from guys like yourselves that have knowledge with this stuff. As for the chain drives though how would you flush those without opening them? I opened one side and broke bolts had to take it to the welder and had new studs welded on big ordeal for me.
 
I need to replace about 80% of the hoses on this machine so i will be draining most of the fluid between that and emptying the tank and filter, the guys in industrial at the parts store said aw46 is the thicker one but wanted an opinion from guys like yourselves that have knowledge with this stuff. As for the chain drives though how would you flush those without opening them? I opened one side and broke bolts had to take it to the welder and had new studs welded on big ordeal for me.
Wow, that is really cheap! jump on that deal.
Just how bad is the bend in the rod? if it's only slight, it may be ok still. The issue is whent he rod is bent, it wears the gland nut, the part that screws into the cylinder and has seals in it. When the gland wears, the clearance between the rod and the gland can get too big and the seal will be damaged over time and leak.
When you have the ram apart, measure the hole, and see just how out of round it is. It may be just fine with some wear, but it may damage the seal over time.
 
Wow, that is really cheap! jump on that deal.
Just how bad is the bend in the rod? if it's only slight, it may be ok still. The issue is whent he rod is bent, it wears the gland nut, the part that screws into the cylinder and has seals in it. When the gland wears, the clearance between the rod and the gland can get too big and the seal will be damaged over time and leak.
When you have the ram apart, measure the hole, and see just how out of round it is. It may be just fine with some wear, but it may damage the seal over time.
Good to know will measure it when it's all apart and see. They have a slight curve in them, noticeable by the naked eye though when they are extended.
 
Good to know will measure it when it's all apart and see. They have a slight curve in them, noticeable by the naked eye though when they are extended.
Thomas has a website with repair and parts manuals. I had a T243HDS. The ser # started with an "M" and I found out it was a 1996. If yours starts with a "K" I believe it would be a 1994. Mine called for 10W30 for all oil except the engine. I would check with the guys at Thomas for fluid types. Here is the website you can download your parts and service manuals from it. http://www.thomasloaders.com/index.asp. Best of luck.
 
Thomas has a website with repair and parts manuals. I had a T243HDS. The ser # started with an "M" and I found out it was a 1996. If yours starts with a "K" I believe it would be a 1994. Mine called for 10W30 for all oil except the engine. I would check with the guys at Thomas for fluid types. Here is the website you can download your parts and service manuals from it. http://www.thomasloaders.com/index.asp. Best of luck.
I just checked Thomas and the T175 calls for 10W30 in chain cases and hydraulic reservoir. I would be leary of AWP hydraulic 10W oil.
 
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