- TH350 TRANSMISSION CRACKED
- TH350 TRANSMISSION INSTALL
- TH350 TRANSMISSION DRIVER
- TH350 TRANSMISSION FREE
Place the low/reverse spring cage and snap ring on the piston. Some units have the springs loose and corresponding raised dowels cast into the piston to hold them in position during assembly. This unit uses a spring cage with all of the springs attached to it. Locate the low/reverse spring cage and snap ring. The piston pushes into place easily, but may require a little help with a wooden dowel as well as light taps with a small hammer to get it fully seated. Use plenty of clean ATF, or Trans Gel, on the seals. Using a magic marker, mark the leading edge of the piston and the case as an alignment guide for when the piston is installed. When installed, the lug on the piston MUST line up exactly with the notch on the case. Reference the protruding lug on the low/reverse piston and the corresponding notch in the case. Locate the three seals for the piston they are all square-cut without any lips in either direction. The low/reverse apply piston is the first item installed once the bushing is in place.
TH350 TRANSMISSION DRIVER
Most handles on bushing driver sets are far too short. Use a long heavy metal rod to drive in the case bushing. Apply a small amount of red Loctite to all bushings before driving them in place. It is also set slightly below flush in the case to allow room for the lip of the output shaft’s Torrington bearing. The case bushing is driven in from the front. They collapse and come out with less effort. It really helps if you can fi nd the parting line in the bushing and strike it there. Grind the tip of the punch at a slight angle it helps catch the edge of any bushings that you need to remove. If you don’t have a bushing driver, a long tapered flat-nose punch works fine. It removes the bushing without gouging the case. Locate the correct bushing driver for this task if you have one. Once the case is cleaned and securely mounted in the holding fixture, drive out the case bushing. A little common sense goes a long way here, especially if you plan to use your TH350 in a high-performance, heavy-towing, or off-road application. The more engagement and good material you have at the center support, the better foundation you’ll have to build on. Even so, if your case or the case lugs at the center support are heavily worn or damaged, you may want to replace these parts, even if you are upgrading the center support or installing a “case saver” during the rebuild.īuilding a strong transmission that will provide many years of reliable service starts with using a good core.
Case repairs and upgrades are covered later in this chapter. You must also closely inspect the case lugs at the center support. This may involve some extra effort to remove paint or old undercoating that may be covering up troubled areas. You need to clean the case well enough to locate any cracks prior to assembly. These cracks are usually located where the main part of the case starts to fl air out into the bellhousing area, but may not be visible at a glance.
TH350 TRANSMISSION CRACKED
I’ve seen a few TH350 cases cracked in the bellhousing area.
This kit’s gaskets are not interchangeable with stock gaskets.īe sure to also check the case very closely for cracks. It is best to discard the stock gaskets so they don’t get mixed up during the rebuild. Most shift kits come with upgraded separator plate gaskets (right). The shift kit I have chosen comes with a special separator plate that double-feeds the high clutch, and has other modifications for improved shift performance.
TH350 TRANSMISSION INSTALL
You are also going to install an aftermarket shift kit during the rebuild. Any dirt or debris that finds its way inside the unit during assembly is likely to create function issues later on when the transmission is placed in service. Automatic transmissions rely on hydraulic fluid and pressure to work correctly, so there are multiple passages and moving parts, including valves, that need to move freely for correct function. Because thread repair involves drilling and tapping, you create a considerable amount of metal chips that could easily fi nd their way into the assembly. Thread repairs are covered in Chapter 2 and need to be done before you begin reassembly. Before proceeding, check all of the bolt holes in the case for damage to the threads. You can copy and paste this link to share: īefore you begin the assembly process, thoroughly clean the transmission case, and bolt it into a suitable holding fixture.
TH350 TRANSMISSION FREE
SHARE THIS ARTICLE: Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in.
0 kommentar(er)
