#1975 case 450 dozer specs manual#
The service manual is pretty expensive (like $150 used and over $200 new). I also recommend the factory service manual and parts manual. I have found this book to be pretty good for telling you what you need to do. If you don't have it, now is a good time to at least get the operators manual for your machine. It ain't cheap to do this but its certainly worthwhile as dirty hydraulics will certainly ruin something much more expensive. At the same time crawl underneath and look for weak or mushy hoses that should be replaced. If you have not done so you really should change out all fluids and filters. One leading cause of lack of motive power is either low drive hydraulic fluid or a clogged screen filter. I ended up with Hy-Tran in the accessory hydraulics and TCH in the drive on my machine. They now recommend TCH again, especially for the drive hydraulics. My Case dealer sells something I think is called Hy-Tran which is suppossed to be a subsitiute for TCH, however, I've got a really good parts man at my Case dealer who told me that Case was recommending substituting Hy-Tran for TCH but changed their minds. I don't think its the same thing as HyGuard, and its certainly not the same thing as regular hydraulic fluid that you might get from NAPA. This is especially important in the drive system. Now, what oil do you use? Marlowe is right, use TCH in both hydraulic systems. The finals do NOT take hydraulic fluid, they take gear oil just like the rear differential in a car. Somewhere towards the bottom of the gear housings I think there is a drain. About halfway up on the back of these housings is a plug where you fill them. Looking at the back of the machine you will see them on the left and right just inside the tracks. The charge pump provides pressure to the torque converter. The other end of the big hose goes to the "charge pump" which is located on the engine right under the generator. The hydraulic fluid is drawn up from the resovoir under the seat, and through this filter. The screen filter assy is bolted to the firewall and it contains, you guessed it, a filter screen. Looking at the right side of the engine you will see a large 2" hose that runs from the screen filter assy to the charge pump. The dip stick for this system is located right under the operators seat. Now the other hydraulic system runs the drive. It bolts to a coupling that connects right to the crank. The pump for the accessory hydraulics is located in front of the engine right under the radiator. Basically its the compartment opposite of the battery compartment. Looking at the right side of the machine, the panel panel is opened from the outside.
The accessory hydraulics have a filter that is accessable behind a panel on the right hand side next to the seat. Looking at the back of the machine, the dip stick/filler is on top of the tank to your right. The tank for this hydraulic fluid sits behind the seat and is part of the fuel tank assy. The first system deals with hydraulics to the blade cylinders, or what I like to call the accessory hydraulics. There are two hydraulic "systems" on this beast.
Your 450 Dozer is essentially the same as my 450 Loader. Re: Case 450 Dozer - Sometimes doesn't move in reply to Dennis Kropp, 11-05-2005 04:27:39
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