F 250 2WD Pickup V8-7.3L DSL (1990)
Countershaft: Adjustments
COUNTER SHAFT BEARING PRELOAD
Measuring Countershaft Bearing Preload
1. Attach a suitable dial indicator near Power Take-Off (PTO) opening in front case, then position indicator as to allow measurement bar to rest
against flat face of 5th speed helical gear on countershaft.
2. Zero dial indicator.
3. Insert pry bars through each PTO opening, then position them beneath 5th speed helical gear on countershaft.
4. Zero dial indicator, then apply pressure to pry bars and note dial indicator reading.
5. A shim and shaft seal, to be fitted, should have a combined thickness equal to dial indicator reading plug 0.00070-0.00434 inch. This will result in
a specified preload after installation of shims, shaft seal, mainshaft and countershaft.
