RHINO FN180 Operator's Manual download pdf (Page 190)

MAINTENANCE

FN180/FN120 07/12 Maintenance Section 5-34

MAINTENANCE

INPUT SHAFT INSTALLATION

STEP I

insert short and long spacer (29 & 24) in proper location on shaft. Press rear bearing (20) on to shaft.

STEP II

Insert shaft through rear housing bore through gear. Drive front bearing into place against gear.

STEP III

Press bearing cups into both front and rear bores.

STEP IV

Bolt front cap (4) in place using same shim pack present when disassembled. Bolt rear cap (21) in place using

same shim pack also.

STEP V

Check bearing preload and gear back lash. Gear back lash should be.015” to .025”. If back lash is tight add

shim to front cap and remove shim from rear cap. Reverse procedure if back lash is to large. Check input shaft

preload - push and pull on shaft to see if end play exists and if so remove shim from back cap (21). The only

method to measure preload is to rotate input shaft turning whole box and reading should be 30-50 in/lbs.

STEP VI

Remove front and rear caps, apply gasket sealant, and reinstall caps and torque bolts to required torque,

Recheck using torque step 5.

STEP VII

Press input shaft seal (6) into front cap (4). Install top cover (26) with gasket (31). Gearbox is ready to fill with

oil.

NOTE: Be sure seal plate (34) is installed using capscrew (33). Failure to install plate could result in seal

pushing out of gearbox.

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RHINO FN180 Operator's Manual Page 190