Transmission Overhaul Procedures-Bench Service
Special Instructions Determine if the countershaft is the upper or lower countershaft, and mark it if necessary. The lower countershaft has a larger 47 tooth PTO gear, and if the transmission has an oil pump, the rear of the shaft will be extended to support the oil pump drive gear.
Special Tools •
Press
Overdrive Model Configuration Procedure 1.
If previously removed, install the key in the countershaft keyway.
2.
To ease assembly, lightly lubricate the shaft and inside diameter of each gear. Note: Refer to the countershaft cross section while reassembling the countershaft and gears. If assembled correctly, the countershaft will have the same shape as that shown in the cross section.
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3.
Install the 2nd speed gear (smallest gear). To install it, align the gear keyway with the countershaft key as shown, and press the gear on the countershaft as shown.
4.
Install the 3rd speed gear (next smallest gear). To install it, align the gear keyway with the countershaft key, and press the gear on the countershaft.
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Transmission Overhaul Procedures-Bench Service
How to Assemble the Countershaft Assemblies
