F 350 4WD Pickup V8-351 5.8L VIN H EFI (1997)
Mainshaft: Testing and Inspection
Input Shaft and Mainshaft Tapered Roller Bearing Preload
1. With the transmission placed on a bench with the output flange facing upward, attach a dial indicator gauge with a magnetic base, such as Dial
Indicator/Magnetic Base D78P-4201-B or equivalent to the output flange in such a manner that the measurement bar will rest on the output end of
the mainshaft as shown in the illustration.
2. Zero the dial indicator and, using a pry bar, gently pry up the input shaft and mainshaft.
3. Note the indicator gauge reading. An input bearing front shim and oil baffle which is to be fitted later must have a combined thickness equal to the
dimension recorded on the dial plus 0.02-0.11 mm (0.00079-0.00434 inch). This will result in obtaining the specified preload after installation of
the shims and oil baffle, and mainshaft and countershaft cluster gear.
NOTE: Shims and oil baffle must be removed prior to preload measurement. The oil baffle is part of the shim package under the outer bearing
race.
