MacDon 9250 Operator's Manual page 139

Install Tires
DRIVE TIRES
Install tires on a hard, level surface as follows:
1. Lift front end of windrower using a forklift and
place 14" (35 cm) blocks under yellow skid
shoes (S) on front frame legs.
2. Install drive tires onto power wheels ensuring
tire tread points forward and air valve stems are
on the outside.
NOTE: For "Turf and Field" tires (diamond or
rectangular tread), be sure arrow on sidewall
points in forward rotation.
3. Torque drive wheel bolts as follows:
9 Bolt Rim: 130 ft. lbs. (175 N⋅m.)
8 Bolt Rim: 180 ft. lbs. (245 N·m)
Follow proper bolt tightening sequence (see
Maintenance/Service section). Re-check torque
as follows:
• Every 15 minutes on the road or 60 minutes in
the field until torque stabilizes, then
• Daily (10 hours) until no change is recorded for
3 consecutive days (30 hours), then
•
Every 200 hours or annually thereafter.
4. Lift front end of windrower with forklift and remove the blocks from under skid shoes. Lower the windrower
onto its tires.
5. IMPORTANT: Remove yellow skid shoes (S) from front frame legs.
DRIVE TIRE INFLATION
Check the tire pressures and adjust if necessary.
CAUTION: When inflating tires, use a
clip-on chuck and extension hose long
enough to allow you to stand to one
side and not facing tire.
NOTE: Pressures below are for a fully loaded
header. If hay conditioner is removed, or a bat reel
replaces a pick-up reel, reduce pressures by 2 psi,
(14 kPa).
Header Model Header Size
912, 922, 933 All
962 All
972 12 - 21
972/Sprayer 25 - 36
Form # 46584
ASSEMBLY
Drive Tire Inflation Pressures
21.5L - 16.1 14.9 - 24
19 psi (132 kPa) 33 psi (228 kPa)
21 psi (145 kPa) 36 psi (248 kPa)
19 psi (132 kPa) 33 psi (228 kPa)
25 psi (172 kPa) 42 psi (289 kPa)
137
S
REMOVE
INSTALL DRIVE TIRES & REMOVE SKID SHOES
STAND TO ONE SIDE WHEN INFLATING TIRES
500 - 70R24
19 psi (132kPa)
21 psi (145 kPa)
19 psi (132kPa)
24 psi (165 kPa)
540- 65R24 or 560-65D24
18 psi (125 kPa)
20 psi (138 kPa)
18 psi (125 kPa)
22 psi (151 kPa)
Issue 11/06 Web Rev_01