9.
12)
Loosen and remove two (2) carriage screws (item
and flange nuts (item 15) that secure pump support
bracket (item 8) to frame.
3
4
10.Remove
two (2) flange screws (item 3) and flange
5
nuts (item 9) that secure traction pump flange to ma-
chine frame.
6
IMPORTANT: Make sure to not damage machine
components while removing the pump assembly.
7
1
2
9
11.
Carefully lift pump assembly from the machine.
traction and gear pumps (Fig. 70):
12.Separate
8
A. Remove two (2) socket head screws, lock wash-
ers and flat washers that secure gear pump to trac-
tion pump.
Figure 70
1.
2.
3.
4.
5.
Traction pump
O--ring
6.
7.
8.
Gear pump
Flat washer (2 used)
B. Remove gear pump from traction pump. Locate
and discard O--ring from between pumps.
Flat washer (2 used)
Pump support bracket
Lock nut (2 used)
Lock washer (2 used)
Socket screw (2 used)
9.
C. Ifnecessary,remove two(2)locknutsthatsecure
pump support bracket to gear pump. Remove brack-
et and two (2) flat washers from gear pump.
5.
bracket with two (2) carriage screws (item 12) and
flange nuts (item 15).
Secure pump support bracket to inside of frame
13.If
Note orientation of fittings for assembly purposes.
necessary, remove hydraulic fittings from pumps.
6.
Install hydraulic hoses to fittings on pump assembly
in positions noted during removal (see Hydraulic Hose
and Tube Installation in the General Information section
of this chapter).
14.Remove
draulic lines and fittings.
and discard all O--rings from removed hy-
7.
to traction neutral switch.
Connect machine wire harness electrical connector
Installation (Fig. 67)
1.
If fittings were removed from pumps, lightly lubricate
8.
(Fig. 69):
Secure traction cable assembly to traction pump
newfittingO--ringswithcleanhydraulicoil.Installfittings
with O--rings to the pumps (see Hydraulic Fitting Instal-
lationintheGeneralInformation sectionofthischapter).
Orientate fittings as noted during removal.
A. Position traction cableassemblytopumpassem-
bly.
2.
Assemble traction and gear pumps (Fig. 70):
B. Secure traction lever bracket (item 12 in Fig. 69)
to pump lever with cap screws (items 7 and 13 in Fig.
A. Lubricate and position new O--ring between
pumps.
69)
and lock nut (item 8 in Fig. 69).
C. Secure lever damper (item 14 in Fig. 69) to trac-
tion cable bracket with flange nut (item 4 in Fig. 69).
B. Position gear pump to traction pump and secure
with two (2) socket head screws, lock washers and
flat washers.
D. Secure traction cable to traction cable bracket
(item 6 in Fig. 69) with jam nuts.
C. If pump support bracket was removed from gear
pump, fit flat washers and bracket to gear pump and
secure with two (2) lock nuts.
9.
Install hydraulic pump drive shaft (see Hydraulic
Pump Drive Shaft Installation in this section).
IMPORTANT: Make sure to not damage machine
components while installing the pump assembly.
10.Check
oil if necessary.
oil level in hydraulic reservoir and add correct
3.
Carefully lower pump assembly to machine frame.
11.
Follow Hydraulic System Start--up procedures (see
Hydraulic System Start--up in this section).
4.
(2)
Secure pump assembly to machine frame with two
flange screws and flange nuts.
12.Check
traction drive for neutral and traction neutral
switch operation. Adjust if necessary.
Hydraulic System
Page 4 -- 70 Groundsmaster 4300--D
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