Removal (Fig. 33)
Empty Topdresser hopper and position machine on
a level surface. Chock wheels to prevent machine from
moving. If Topdresser is attached to tow vehicle, engage
tow vehicle parking brake, stop engine and remove key
from the ignition switch.
5. Slide wheel motor shaft into sprocket while removing
the dowel in sprocket bore that was placed during the re-
moval process. Align motor mounting holes with car-
riage bolt and stud on frame. Place flat washer (item 12)
and lock nut (item 11) on carriage bolt and stud but do
not fully tighten.
1.
6.
Apply Loctite #242 (or equivalent) to threads of set
2.
that secure wheel motor to frame.
Loosen but do not remove two (2) lock nuts (item 11)
screws (item 14). Center sprocket in cradle and secure
in position with two (2) set screws. Make sure that
sprocket does not contact head of carriage bolt (item
24).
3.
and flat washer (item 15) from wheel motor shaft.
Remove cap screw (item 16), lock washer (item 17)
7.
screw (item 16). Install cap screw, lock washer (item 17)
and flat washer (item 15) into wheel motor shaft.
Apply Loctite #242 (or equivalent) to threads of cap
4.
sprocket to wheel motor shaft.
Loosen two (2) set screws (item 14) that secure
5.
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
Read the General Precautions for Removing and
8.
so tight that binding occurs on sprockets. Tighten lock
nuts to secure motor to cradle.
Rotate wheel motor to take slack out of chain, but not
6.
poses. Thoroughly clean hydraulic hoses and fittings
prior to loosening hydraulic lines at wheel motor.
Label all hydraulic connections for assembly pur-
9.
mid–span between sprockets. If necessary, reposition
wheel motor to allow correct chain deflection.
Check that chain has 0.125” (3.2 mm) deflection at
7.
Disconnect hydraulic lines from fittings on wheel mo-
10.Remove
lines and fittings during disassembly.
caps or plugs that were put on any hydraulic
tor. Allow hydraulic oil to drain from lines into a suitable
container. Put caps or plugs on open hydraulic lines and
fittings to prevent contamination. Remove and discard
O–rings.
11.
Lubricate new O–rings with clean hydraulic oil and
position on fittings. Using labels made during removal,
correctly connect and secure hydraulic hoses to hydrau-
lic fittings on wheel motor.
8.
move two (2) lock nuts (item 11) and flat washers (item
Support wheel motor to prevent it from shifting. Re-
12)
9.
that secure motor to machine.
Antiseize
Lubricant
Slide wheel motor from sprocket and machine. While
2
sliding wheel motor from sprocket, insert dowel into
sprocket bore to support sprocket and chain in cradle
assembly. Locate and retrieve square key from motor
shaft.
Loctite #242
3
10.If
required, remove hydraulic fittings and O–rings
from the wheel motor. Discard O–rings.
Installation (Fig. 33)
1
8
1.
If removed, install hydraulic fittings with new O–rings
into the wheel motor ports (see Hydraulic Fitting Installa-
tion in the General Information section of this chapter).
6
7
2.
Apply antiseize lubricant to wheel motor shaft. Posi-
5
4
tion square key into motor shaft slot.
3.
Make sure that roller chain is positioned around
Figure 34
wheel motor sprocket and that hub of sprocket is away
from wheel motor position.
1.
2.
3.
4.
Hydraulic motor
Square key
Set screw (2 used)
Cap screw
5.
6.
7.
8.
Lock washer
Flat washer
Sprocket
Drive chain
4.
Make sure that carriage screw is placed in cradle
hole.
Topdresser 1800 & 2500
Page 3 – 39
Hydraulic System
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