MacDon 5020 Mower Conditioner - Manual (Page 59)

59
MAINTENANCE/SERVICE
ROLLS AND ROLL DRIVE (continued)
Roll Drive Chain Installation
IMPORTANT: To ensure proper chain quality,
service with original equipment part only.
1. Feed the chain into chain case.
2. Lift chain up to driver sprocket (H) and engage
on first few teeth.
3. Turn sickle drive pulley at left end of header to
rotate driver sprocket counter-clockwise until
chain engages upper roll sprocket (J) as
shown.
4. Turn upper roll u-joint to rotate upper sprocket
(J) clockwise until chain engages lower roll
sprocket (G) as shown.
5. Turn the lower roll u-joint to rotate lower
sprocket (G) counter-clockwise while holding
the first link of the chain against sprocket (G).
Continue turning until chain is engaged
sufficiently to install connector link.
6. Install connector link (F) and install the chain
tensioner sprocket (K).
7. Tension chain as described on page 56, "Roll
Drive Chain Tension".
8. Scrape old silicone off of chain case and
covers, and clean these surfaces with solvent.
9. Apply new silicone to mating surfaces of chain
case, upper and lower covers, and drive shaft
shield.
10. Bolt covers to chain case and tighten bolt which
clamps upper cover to drive shaft shield.
11. Replace chain case grease to capacity shown
on page 56, "Roll Drive Chain Case Lubricant".
ENGAGE DRIVER AND UPPER SPROCKETS
ENGAGE LOWER SPROCKET
CONNECT CHAIN AND
INSTALL TENSIONER SPROCKET