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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

1973 case 450 loader

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12-08-2006 18:49:14

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Hello everybody, I just got a little track loader and need some info on all the sticks what works what? I really need some filter info. what is the right way to kill this I have to turn the fuel off before the filter and let it run out of diesel.It seem that it doest want to climb a grade. thanks for your time. joe

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12-09-2006 05:59:36

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 Re: 1973 case 450 loader in reply to J BOWERS, 12-08-2006 18:49:14  
Never ran Case track loader but the controls should be same as dozer, On right armrest should be bucket controls, center console has your forward/neutral/reverse (shorter lever on left) with the other 2 controlling high/neutral/low for each track (for steering) and the little flipper lever engages the starter but can only be used when in neutral, it can be started in gear by pushing the little rubber capped button under the flipper so keep that in mind. On the dash should be the key which turns on the electical system and a T-handle or knob that shuts the fuel off to stop the engine. The left 2 pedals are track brakes and the right one is the gas...Oh and sticking out from under the seat is a Hi/Lo lever...They really fly in Hi range...they were simple little machines to run and you should catch on pretty quick...Luck...Don

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j bowers

12-09-2006 06:30:20

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 Re: 1973 case 450 loader in reply to oldcraneguy, 12-09-2006 05:59:36  
I guess the Hi/Lo lever was what I was talking about. With it sitting still it will grind when I go to move the lever.

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John Van Valkenburgh

12-09-2006 14:56:41

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 Re: 1973 case 450 loader in reply to j bowers, 12-09-2006 06:30:20  
Generally that Hi/Low range lever is not ment to be moved with the engine running. It can be done but you need to move it from one range to the other quickly or the transmission will spin in neutral. Most people leave it in low which I believe is the forward position.

There are 3 sticks in front of the operator that are the most commonly used. The left stick operates the fwd/rev motion and has a neutral middle position. The other two sticks operate each track. Forward for fast, back for slow and middle for neutral.

There is an engine shutdown cable that should run to the lower left corner of the instrument panel. This cable operates a lever on the fuel distributor on the front/left of the engine. Pulling this cable is the proper way to stop the engine. Generally speaking its not a good idea to cut off the fuel supply and force the engine to run out of fuel. Technically the engine stop lever kills the fuel to the engine but it does so by shutting off fuel flow in the fuel distributor, it does not let the fuel distributor itself run dry.

Your loader is probably equipped with the standard Case 188 inline four cylinder Diesel engine. It's a good engine but like anything else needs regular oil changes. When the 188 "goes" it generally looses the #3 cylinder rod and puts a hole in the block.

There are several filters and a pickup screen that occasionally need cleaning or changing. The first thing you need is the owners/operators manual. It's quite good and gives lots of necessary information. If you plan to do your own work on the machine a set of manuals is indespensible. These are not hard to find but will run between $200 and $300.

Before you run this machine much take time to learn where all the fluids are and check their levels and condition. Running low on fluids or running contaminated fluids is a good way to end up with a heavy expensive piece of yard art.

Best of luck and let me know if I can answer anything else for you.

1968 Case 450

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j bowers

12-09-2006 15:32:46

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 Re: 1973 case 450 loader in reply to John Van Valkenburgh, 12-09-2006 14:56:41  
I just want to make sure everything is good to go before I use it. The engine sounds great all of its fluids are full and clean. The owner before me said it lost power all of a sudden it will not climb a good size hill or push hard. I havent tried anything on it yet. I was hoping a filter change would fix. The kill knob is MIA. There is no brakes also. Thanks

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j bowers

12-13-2006 16:10:28

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 Re: 1973 case 450 loader in reply to j bowers, 12-09-2006 15:32:46  
It runs good in low and low but when you go to low and push the two sticks to the frount it will not climb a grade.

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John Van Valkenburgh

12-11-2006 11:47:01

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 Re: 1973 case 450 loader in reply to j bowers, 12-09-2006 15:32:46  
A sudden loss of engine power is usually water in the fuel filters or clogged fuel filters. The engine may grow weaker fairly quickly especially if you are pushing it hard. Two things to look for here.

1. Change both fuel filters and if your machine has one, empty and clean the sediment bowl under the fuel tank (at the cut off).

2. With the fuel filters off, open the fuel shut-off and make sure you have a good steady stream of fuel running through the line. Should be about a pencil sized stream. If the fuel is just trickling out of the line you may need to clean the fuel inlet at the tank. A lot of people simply blow out the line with air.

These steps usually take care of the problem. Be sure to use new fuel filters and bleed all the air out of the system before starting up the engine.

Best of luck,
1968 Case 450

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12-10-2006 04:59:41

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 Re: 1973 case 450 loader in reply to j bowers, 12-09-2006 15:32:46  
I have a 1974 Case 450 with 6-way dozer..impressive tractor. You've got great advice above. The kill knob connects by cable to a small lever on the hidden side of the injection pump (next to the engine block). Just rotate that lever to shut down the engine.

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