Our tools and parts are used worldwide for rebuilding general to high performance automatic transmissions. Output shafts in early 1964—1965 cars had weak 25-spline output shafts. Step 18: Remove Geartrain With both forks and rails removed, it is now possible to remove the entire geartrain. Step 28: Remove Second Gear and Parts Remove the second-gear snap ring, snap-ring spacer, and second gear. Transtar also carries the sleeves separately. Think of an automatic transmission like a Swiss watch—perfectly mated surfaces must have perfect tolerances.
They can be used for a wide variety of techniques when repairing a transmission. The new thrust washers are nylon instead of bronze. Use a long screwdriver with a flattened tip as a tool to install detents and interlocks. Step 16: Install Forks and Position 1-2 Shifter Shaft Drop the interlock in that sits between the 3-4 rail and the 1-2 rail. The Toploader had more than 100 different models based on engine, vehicle, and year. You can be methodical and cover all the bases during a rebuild and still things can go wrong.
Because automatic transmissions encompass dozens of tiny parts—clips, balls, pins, valves, springs, and other items—your workspace must be well-lit, neat, orderly. Step 8: Place Countergear in Case Install the needles and spacers in the countergear and install the thrust washers as well. It is also interesting to note that this transmission used a 3-shift rail design. If you mix them up, the unit will not shift. Most interlocks and detents groove and burr the shafts, so deburr and polish each rail and make sure they glide smoothly in the case. Whenever you use harsh chemicals such as petroleum or alcoholbased cleaning solvents, protect your lungs with a good respirator. Disassembly Step 1: Remove Top Cover The bearing retainer and top cover are removed.
Often, these early 25-spline designs did not survive the shock loads of power shifts nor startingline clutch dumps. A Hot Flush system left purges transmissions and coolers of stray particulates that can damage new transmissions. Air tools make transmission building faster and easier. Currently, the following states regulate the offer and sale of franchises: California, Hawaii, Illinois, Indiana, Maryland, Michigan, Minnesota, New York, North Dakota, Oregon, Rhode Island, South Dakota, Virginia, Washington, and Wisconsin. Step 17: Retain Interlock Pin Professional Mechanic Tip The 3-4 rail has an interlock pin. If you are installing your transmission that was purchased from Monster Transmission, our sales and support staff is here. Later, these were revised to 28-spline output shafts.
The unit requires a completely new assembly on both 3-4 and 1-2 because of this. C Interlock System Components and Tools This is basically how the interlock system works: When any one rail is moved, the interlock pin is raised, preventing any other rail from moving. Step 2: Remove Detent Spring With the top cover off, some units have the 1-2 detent spring exposed. Browse our online catalog and. Written by George Reid and Republished with Permission of CarTech Inc.
Step 14: Pry Rear Bearing Out of Case Pry the rear bearing out of the case using screwdrivers or pry bars. During assembly, you need compressed air to check component function. Transmission Build-Up Here is a common 25-spline mainshaft right and one with a failure left. Over time, keys pound out of the slots. Step 4: Remove 3-4 Detent Bolt Remove the 3-4 detent bolt, spring, and detent.
Rebuilding any automatic transmission calls for compressed air. When removing this last component from the case, notice the orientation of the sliding idler gear in relation to the main idler. Tools of the Trade There are tools in the automatic transmission trade you need to be familiar with: slide hammers, snapring pliers, mallets, tiny screwdrivers, awls and picks, presses, punches, bushing drivers, slide calipers, seal installation tools, roll-pin removal tools, alignment pins made from old bolts , seal drivers and installers, Torx drivers, and more. Step 11: Pull Input Shaft Out of Case Flip the transmission back over. Often, these early 25-spline designs did not survive the shock loads of power shifts nor startingline clutch dumps. To get longevity and durability, a transmission must be properly installed and adjusted, which means a methodical approach to getting a fresh transmission into service. Place the rear thrust washer in the case first and keep it in place with grease.
Iron and aluminum castings have their share of sharp edges, as do stamped sheet-metal components. Step 19: Install Steel Gear Performance Tip Because the plastic gear strips out all the time, Auto Gear has reproduced the common seven-tooth gear in steel, which is similar to the black-nylon gear. It is for information purposes only. Step 26: Remove First Gear from Main Shaft Documentation Required Pull the first gear and first-gear thrust washer off the mainshaft. The shift rails kept the shift forks moving in the exact same plane as the synchronizers. The factory vent is that little bulged pinhole in the top cover. Some of these items can be rented or borrowed, especially if you intend to do a transmission build only once.