Reconnect the black line at the Shift Knob. It is always a good practice to clean the outside of the unit before starting the planned disassembly. Replace parts found to be damaged. Check engaging teeth of Sliding Clutches for partial engagement pattern. Lift the air module and tilt it to gain access to the two air holes at the underside at the rear capscrew location.
Synchronizer Assembly Check Synchronizer for burrs, uneven and excessive wear at contact surface, and metal particles. If air continues to leak constantly from the exhaust, the Air Module is defective. Torque will flow from the Auxillairy Drive Gear to the Range Sliding Clutch. . Auxiliary housings were also changed to accommodate the thicker race flange of the 5556507 bearing with a machined step on the rear bearing cover surface. The use of Soft Hammers, Soft Bars, and Mauls for all disassembly work is recommended.
Ensure lube is to proper level. This document has been created as a reference for the information included in each database update only. On the top of the Air Module, remove the Test Port Pipe Plug for filtered vehicle air. The countershaft journal can be. If air is available at the Inlet, check the red line going from the Air Module to the Shift Knob for obstructions or damage.
Step 3 Once the origin of the leak is identified, repair the oil leak using proper repair procedures from the designated model service manual. Yes No Continue to next Step. Once the Range Shift is complete, the driver can complete the Front Section shift. The Transmission must be in Neutral. Special procedures are required and provided in this Manual. All service parts A-5000 slave valves with the date code of 9I1 are suspect.
The Main Drive Gear meshes with both Countershaft driven gears and the torque is split between both Countershafts. The first Transmission or Front Section contains six gear sets which are shifted with the Gear Shift Lever. Bearing inner races should be tight to shaft; outer races slightly tight to slightly loose in case bore. Refer to Figure 4-4 Air System Nomenclature to see an example of an isolated Air Module. Match the pressure to one of those on the chart on the next page, and follow the corresponding instructions. Note: The auxiliary gearing will still turn, but the gears will not be loaded. When Using Tools to Move Parts Always apply force to shafts, housings, etc.
Check the Spool Valve function. It is important that no dirt or foreign material enters the unit during repairs. If sealing action of lip has been destroyed, replace seal. Shift Bar Housings Standard: The standard Shift Bar Housing has a Gear Shift Lever opening that is located toward the rear of the Transmission. The driver complaint will be that the Transmission neutralizes on a shift to High Range.
O-Rings Lubricate all O-rings with silicon lubricant. Oil venting system was not able to separate the oil and air that would allow pressure to build in some transmissions not all transmissions exhibit this problem and eventually purge oil from the breather. A change to the hardware prevents placing the batteries in backwards to cause this error in newer scan tools. Shift Bar Housing Assembly Check for wear on Shift Yokes and Block at pads and lever slot. If no air is available here, repair the vehicle air to the Air Module. Tip: Helpful removal and installation procedures to aid in the service of this unit.
Eaton is dedicated to improving the quality of life and the environment through the use of power management technologies and services. If the problem is intermittent, parts that are not defective could be replaced. Both are described and shown below. Note: In some instances the Transmission appearance may be different from the illustrations, but the procedure is the same. Reconnect the P line at the Shift Knob. To identify the Transmission Model and Serial Number, locate the Tag on the Transmission and then locate the numbers as shown.
Complaints may include driveline vibration, leaking output seal and erratic speed signal possibly causing a speed sensor fault. In most cases, gears with light to moderate pitted teeth have considerable gear life remaining and can be reused, but gears in the advanced stage of pitting should be replaced. This includes customers who purchased the link tester or received the link tester free as part of a promotion. If Sliding Clutch Gears, Companion Flange, or Clutch Hub has wear marks in the spline sides, replace the specific shaft effected. How to use this Manual The service procedures have been divided into two sections: In-Vehicle Service Procedures and Transmission Overhaul Procedures Bench Service. External clutching teeth on the Sliding Clutch will engage internal clutching teeth on the selected Mainshaft Gear.
Note that the Transmission is in the Neutral position because the Sliding Clutches are all in their center positions and not engaged is any gears. Yes No Continue to the next Step. If the transmission is allowed to operate with a cracked cover a low lube failure could occur. To aid in determining the reuse or replacement of any Transmission part, consideration should also be given to the unit's history, mileage, application, etc. Remove the four capscrews attaching the air module to the shift bar housing. The Housing is shown in figure1-3.