MacDon 9250, Operator'S Manual

Page: 137 / 160

Form # 46584 Issue 11/06 Web Rev_01
135
REAR CASTER INSTALLATION
16.5 TIRES ON XX50/XX40
TRACTORS
ASSEMBLY
NOTE: The purpose of shipping preparations such as having no battery is to better adapt the unit for an
extended non-active period. If the machine is to remain non-active for a long period of time, do not perform the
following assembly work until necessary. Also, further prepare the unit for storage as instructed in this manual.
Install Tires
16.5 REAR TIRES on Model XX50/XX40 Tractors:
1. Lift rear end of windrower with forklift and remove
yellow shipping support (B) from walking beam.
Replace bolts securing walking beam pivot tube
bracket and torque to 390 N
⋅
m (290 ft.lbs.).
2. Liberally apply multi-purpose grease to one surface
of plate (G). Install plate (G) over caster pivot shaft
with greased surface down.
3. Note that outer holes on plate (G) are not equally
spaced from center hole. This is to align with bolt
heads (H) under walking beam. Rotate plate (G) to
align holes in plate with bolt heads.
4. Install caster (E) into walking beam by raising the
caster and lowering walking beam onto pivot shaft.
Ensure holes in plate (G) engage bolt heads (H).
5. Install spacer (J) into hole on top of beam.
6. In the following order, install parts onto spacer (J):
NOTE: Install bearing (F) with smaller I.D. race
facing down .
Bearing (F), 3/4 SAE flatwasher (K), spring (L), 1/2
inch large O.D. flatwasher (M) and lockwasher (N).
7. Install bolt (P) to fasten the assembly.
8. Measure length of spring (L) and add or remove
3/4 SAE flatwashers (K) under spring to provide a
spring length of 89 to 92 mm (3-1/2 to 3-5/8 inch).
Torque bolt (P) to 115 N
⋅
m (85 ft.lbs.)
NOTE: Do not place washers (K) on top of spring.
9. Slide cap (R) over assembly.
10. Grease the caster pivot with multi-purpose grease,
continuing until grease is forced out top of walking
beam.
11. Factory set tire pressures are higher than
recommended operating pressure. Deflate to 10 psi
(70 kPa).
12. Repeat steps 2 to 11 at other caster.
13. Place rear casters in the outboard position
(extending behind walking beam) and lower
windrower to ground.
REMOVE SHIPPING SUPPORT
B