MacDon 963 Harvest Header - Manual (Page 51)

50
MAINTENANCE/SERVICE
REEL AND REEL DRIVE (continued)
Reel Drive Chain Tension
Check the reel drive chain tension annually.
To adjust:
1. Loosen four bolts (A).
2. Slide motor away from reel shaft until a force of 11
lbs. (50 N) deflects chain 1/8 inch (3 mm) at mid-
span.
3. Tighten bolts (A).
Reel Drive Chain Lubrication
Lubricate full length of chain annually with Multi-
Purpose Grease.
GAUGE WHEELS - 36 FT. STANDARD, 30 FT
OPTION
Wheel Bolts
Check and tighten wheel bolts after the first 10 hours
of operation and every 100 hours thereafter.
Whenever a wheel is removed and re-installed, check
torque after one hour of operation.
Maintain torque as follows:
4-Bolt Hub: 50 to 60 ft.lbs. (70 to 80 N
⋅ m)
6-Bolt Hub: 80 to 90 ft.lbs. (110 to 120 N ⋅ m)
Follow the proper bolt tightening sequence shown.
NOTE: When installing wheel, be sure valve stem (A)
points away from wheel support.
Gauge Wheel / Transport Casters
Lower casters from both L/H and R/H supports every
500 hours and apply a light coating of Multi-Purpose
Grease to the section of caster which engages the
support.
NOTE - Headers with Gauge Wheel/Transport Option:
To service left wheel in transport position:
• Block the two rear tires.
• Position jack under mid-point of left end sheet.
• Use a 2 to 3 foot long (60 to 90 cm) piece of wood
between jack and end sheet to distribute lifting force
and to prevent damage to shield.
GAUGE WHEEL / TRANSPORT CASTERS
REEL DRIVE CHAIN TENSION
AND LUBRICATION
A
4-BOLT HUB 6-BOLT HUB
GAUGE WHEELS
A
3
1
4
2
1
2
3
4
6
5