Draper Clinic Handout
- FD1 FlexDraper
®
7
Remove two bolts and the chain adjusting cover
(A)
.
Ensure there is no gasket
(B)
damage.
Remove the retainer plate
(C)
.
Tighten bolt
(D)
to 6.8 Nm (60 lbf·in).
Refer to
Table 5.1
and back off (loosen) bolt
(D)
based on your gearbox configuration.
NOTE: For proper tensioning, the chain should have
10–14 mm (3/8–9/16 in.) of deflection at its midpoint.
Refer to
Section 5.6 Header Drive
in the Operators Manual
for more information.
Check header drive gearbox chain tension.
Table 5.1 Adjusting Bolt Tightness on Configured Gearboxes
Gearbox Config
Gear Ratios
Back Off Amounts
CLAAS
22/38 sprocket ratio, 74 pitch chain
1 turn
Case, New Holland, & AGCO
(Challenger, Gleaner, Massey Ferguson)
29/38 sprocket ratio, 78 pitch chain
1 turn
John Deere
37/38 sprocket ratio, 80 pitch chain
2-1/2 turns
