Usage:
CS-431B (1XF),
CP-433B (1MG),
CS-433B (4FK) Vibratory Compactors
Reference: Special Instruction, SEHS9493, "Drum Support Gearbox Modification", August 1992.
Description of Change: A new drum support gearbox is now used for the listed vibratory compactors. The new gearbox features a threaded spindle and a bearing nut which creates a preload on the tapered roller bearings. The preload on the tapered bearings increases their service life.
Adaptable To: The new 1G-9442 Gearbox Group is a direct replacement for the 7X-5283 Gearbox, which is cancelled. The new 1G-9442 Gearbox Group is effective with CS-431B (1XF103), CP-433B (1MG591) and CS-433B (4FK120, 125-Up).
The Reference Special Instruction can be used to update the 7X-5283 Gearbox for earlier machines. This Special Instruction was developed to modify the CP-563 and CS-563 gearbox. However, it can be used to modify gearboxes for the CS-431B, CP-433B and CS-433B Compactors because the same procedure is followed and the same parts are required.