Non-Neutralizing) [324]
441
Figure 441 — Range Shift Cylinder Locator (T313L/T318L Shown)
442
Figure 442 — Cutaway View of Range Shift Cylinder
1. Install a new O-ring into the groove in the shift rail bore.
2. Form the Teflon® seal into a kidney shape as shown in Figure 443.
443
Figure 443 — Forming Teflon® Seal
3. With the nose of the range shift cylinder Teflon® seal inserter (tool No. J 47357) retracted, place the seal in the nose the tool and then push the fold outward to make it sit as flat as possible in the nose.
444
Figure 444 — Inserting Teflon® Seal in Nose of Insertion Tool (Tool No. J 47357)
1. Shift Rail Seal 2. Piston Seal
3. Shift Cylinder Wiper Ring 4. Shift Cylinder Housing 5. Housing-to-Cover O-Ring
6. Cylinder Housing Cover 7. Bolt
8. Piston/Shift Rail Assembly 9. Gasket
REPAIR INSTRUCTIONS
4. Position the nose of the seal inserter in the cylinder housing shift rail bore.
445
Figure 445 — Positioning Tool in Shift Rail Bore
5. Press the plunger down to fully extend the nose. This positions the seal inside the shift rail bore over the O-ring.
446
Figure 446 — Installing Teflon® Seal
6. Remove the tool and then push on the seal with your finger to make sure it is seated against the O-ring. Also, push on the “V” fold of the seal to make sure it is seated, and to remove some of the fold.
447
Figure 447 — Seal Properly Installed in Shift Rail Bore
7. Align the relief of the range shift cylinder Teflon® seal installer/sizer (tool No. J 47358) with the “V” fold of the seal, and then gently insert the tool into the bore. DO NOT twist the tool as it is being installed.
448
Figure 448 — Inserting Teflon® Seal Installer/Sizer (Tool No. J 47358)
REPAIR INSTRUCTIONS
Using a piece of crocus cloth to polish and remove any sharp edges from the installer/sizer tool will ensure that the seal will not be damaged as it is being installed.
8. Continue gently pushing the tool into the bore until the flat end of the tool is flush with the inside bottom of the cylinder.
Examine the seal as the tool is being pushed into place. If the seal moves out of position on the O-ring, or if the fold or a portion of the fold becomes kinked, immediately remove the tool and reseat the seal against the O-ring before reattempting to use the tool to seat the seal.
449
Figure 449 — Installer/Sizer Tool Fully Inserted and End Flush with Bottom of Cylinder
9. After the tool has been fully inserted, leave the tool in place while the remaining cylinder rebuild procedures are performed. This allows the Teflon® seal to form to the circumference of the shift rail bore.
10. On the shift piston, install a new O-ring into the lower (wide) piston groove.
450
Figure 450 — Installing O-Ring in Second/Lower Groove on Piston
11. Carefully install the Teflon® seal over the O-ring. Work the seal over the O-ring by hand as much as possible. Once the seal is in position, slide a small screwdriver under the section of the seal that is not in position, and pry the seal into position.
Be sure the screwdriver does not have any sharp edges on the blade or nicks on the shank. DO NOT over-stretch the Teflon® seal, and make sure that the seal lips seat over each side of the O-ring.
451
Figure 451 — Installing Teflon® Seal
REPAIR INSTRUCTIONS
Do not over-stretch the Teflon® seal. Be sure that the seal lips seat over each side of the O-ring.
12. Install the wiper ring into the upper (thin) piston groove.
452
Figure 452 — Installing Wiper Ring in Upper (Thin) Piston Groove
13. Place the range shift piston seal sizer/piston installer (tool No. J 47359) flange-side (pilot end) down on a clean flat surface.
453
Figure 453 — Piston Assembled in Seal Sizer/Piston Installer (Tool No. J 47359)
14. Slide the piston into the tool until it bottoms on the flat surface.
454
Figure 454 — Inserting Range Shift Piston into Seal Sizer/Piston Installer (Tool No. J 47359)
It is recommended that the piston assembly be allowed to remain in the seal sizer/piston installer tool for approximately 15 minutes before
proceeding with the final assembly. This will properly size the O-ring and seal to the piston, and make final installation easier.
REPAIR INSTRUCTIONS
15. Using a piece of crocus cloth, polish the end of the shift rail and around the setscrew hole to remove any sharp edges or burrs. This will prevent damaging the seal as the piston assembly is installed into the cylinder. Be sure to clean any debris from the shift rail after polishing with the crocus cloth.
455
Figure 455 — Polishing Shift Rail and Setscrew Hole with Crocus Cloth
16. Remove the piston assembly from the seal sizer/piston installer tool.
17. Carefully clamp the range shift cylinder assembly in a vise. DO NOT remove the range shift cylinder Teflon® seal
installer/sizer from the cylinder assembly.
The tool will be pushed from the shift rail bore as the piston assembly is being installed. Place the range shift piston seal sizer/piston installer with the flanged-side (pilot end) on the cylinder housing.
456
Figure 456 — Placing Seal Sizer/Piston Installer (Tool No. J 47359) on Cylinder Housing
18. Align the shift fork locking bolt hole in the shift rail with the air line fitting port in the cylinder housing.
457
Figure 457 — Aligning Shift Fork Locking Bolt Hole with Air Fitting Port in Cylinder Housing
REPAIR INSTRUCTIONS
19. Carefully push the piston assembly through the installation tool until it seats inside the cylinder housing bore. Be sure to catch the range shift Teflon® seal installer/sizer as it is being pushed from the shift rail bore.
458
Figure 458 — Installing Piston into Range Shift Cylinder Housing