Alamo SHD62, SHD96, SHD74, SHD88 manual Gearbox and Extension Shaft Assembly, ASM-FL-0050

ASSEMBLY

ASSEMBLY

GEARBOX AND EXTENSION SHAFT ASSEMBLY

For forward rotation attach the outboard bearing plate (item 1) on the left side of cutter housing with

(2)3/8” x 7/8” bolts, and (3) 3/8” locknuts. The third nut is used at the rear mounting hole (item2). This bolt is used as an anchor for the idler arm spring. For reverse rotation attach the outboard bearing on the right side of the cutter housing with (2) 3/8” x 7/ 8” bolts and (3) 3/8” locknuts. The third nut is used at the front mounting hole. This bolt is used as an anchor for the idler arm spring.

Remove existing nuts and lockwashers (item 3) from bearing housing.

NOTE: On forward rotation units, remove only the lower two fasteners.

Position gearbox and extension shaft assembly onto gearbox mounting frame (item 5). Attach gearbox to frame by using only one gearbox retaining bolt (5/8” x 1-1/2”) (item 6) through the mount plate and into the gearbox housing. Do not tighten this bolt at this time. It should have at least 1/4” free threads to move in and out. See Image

ASM-FL-0050.

Secure bearing housing to outboard bearing plate (item 1) using the bolts previously removed and torque to proper tightness.

After completing the above steps, check the distance between the gearbox mounting lugs and the mount plate, if lugs do not rest on the mounting plate evenly, insert shims from shim kit (#000552) on each lug as necessary to insure that the gearbox pulls up evenly on the mounting plate (see item 7). Secure gearbox by using (2) 5/8” x 1-1/4” bolts for upper gearbox fee and (2) 5/8” x 1-1/2” bolts for lower feet. Torque to 170 ft-lbs.

IMPORTANT: Failure to properly shim the gearbox feet as necessary will result in improper alignment and will cause premature wear on the gearbox, bearing, extension shaft, or coupling.

SHD 03/09 Assembly Section 3-4

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