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7720 - separator drive belt change
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deere_9600
Posted 10/1/2010 16:05 (#1380753 - in reply to #1380712)
Subject: re: CORRECT way to change drive belt on 7720


1 Lift seat , remove top shield directly under seat. loosen and remove 3/4 head bolts on shield directly under seat. Loosen 2 9/16 head stub bolts, remove burrs and shield
2 Loosen the spring that controls tenson on the hydro belts with an impact wrench. These 2 belts will have to be removed as the drive belt will have to be slipped under the belts
3 remove electric clutch module on end of primary countershaft. Loosen bolts on shield around electic clutch
4 If you do it quick and fast , only loosen oil hoses to pump on end (have NEW or the old one at the ready) and slip old/new past pump. A little oil mess but no need to pull pump off shaft. Connct oil hosesback up (On 8820 s there is no pump on said shaft)
5 Lift up on hydro belt pulley to jump top matched belts off and jump /put new drive belt on electric clutch pulley
6 slide belt onto front pulley (helps to have a helper to turn electric clutch till belt is in grooves)
7assemble shields to original settings and put hydro belts back on
8 impact tighten spring tightener till hydro belts are tight enough
9 should take around 30 - 45 minutes with 1 or 2 helpers

Easy money , get a clue as to what has to be done....
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