Remove the spool valve and S-link from the valve body and set them aside to avoid damaging them. It is easily bent or damaged if it hits the hard concrete fl oor. The spool valve slides out of the valve body when it is removed.
#Th350 exploded view manual#
Note the S-link that attaches the spool valve to the linkage on the manual shaft. It may stick to the gaskets and tear them during removal. Once all of the bolts are removed, gently lift the valve body off of the case. Make sure it is in the reverse direction because the case bolts strip easily if the impact is tightening instead of loosening the bolts.Ī spin-handle and 1/2-inch socket is a safer and faster method to remove the valve body bolts. Use an air impact to remove the 5/16-18 valve body bolts. Once all of the valve body bolts have been removed, it slips easily out of the valve. The S-link is connected to the manual valve and linkage. Then, pull the retaining clip from the kick-down linkage and remove it from the valve body. Make sure that the kick-down cable has been removed from the case. A separate gasket for the filter is located between the parts. Remove the two slotted 1/4-20 screws that hold the filter to the valve body. Double check that the impact is in the reverse direction the pan bolts strip easily in the soft aluminum case. Using an air impact gun speeds up the process considerably. The transmission pan bolts are removed first.Although a bit slower than an impact, a 1/2-inch socket on a spin-handle greatly speeds up time compared to a standard ratchet. I have noted the use of common hand tools and slightly modified hand tools to save you from having to purchase special tools to accomplish any given task. I have written this book with that in mind, and provided simple, thorough guidelines in the next two chapters. Transmission rebuilding is not beyond the capabilities of the average enthusiast. You must note their position in the transmission when they were removed, so that you can get the correct parts in the correct place and in the correct orientation later on during assembly. Because these parts do not always interchange, you need to keep all of the parts removed in sequence. Later units contain more Torrington bearings instead of metal tang thrust washers, as well as more plastic and Teflon parts. The TH350 underwent several changes during its production years. Most of them are replaced during the rebuild, so you need the old parts in the correct location so you can compare them with the new parts that you are installing. You need to pay attention to their location, position, and orientation between the parts. Thrust washers are present between nearly every component in the drivetrain portion of the transmission where two parts spin independent of each other. Be sure to always look on the bottom of each piece as you remove it it’s quite common for thrust washers to stick to the component being removed and not be present on the next component in the case. As each item is lifted out, place it on a clean tray or shop towels in the same position that it was in the case. Some units require a good power washing to remove dirt, mud, grease, and road grime before they are taken apart.Īs you remove individual components from the case, reference the pictures in the book and compare the parts you remove. I have cleaned off a work area and rounded up the tools needed to take the unit apart for inspection. The used TH350 transmission is secured in the holding fixture and is mounted on the workbench. Be prepared and keep a large pan under the transmission the entire time. Some fluid will still be trapped under the valve body, under the accumulators, and in the case oil passages. The best method to accomplish this is to put it in a holding fixture for several hours with the tail housing down and a large drain pan under it. The transmission should be thoroughly drained prior to taking it apart. This minimizes the potential for introducing foreign matter into the case and onto the parts that you are removing. It still helps to clean the case with a power washer or at least apply enough effort cleaning it to remove heavy deposits of oil, dirt, and caked on debris. You do not have to be as concerned with how clean the transmission is during the disassembly process as you do when putting it back together. You can copy and paste this link to share:
#Th350 exploded view free#
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