Service Manual

Groundsmaster 7200/7210 Hydraulic SystemPage 4 – 73
22.Taking care to not damage PTO oil seal, install oil
seal into pump housing bore at PTO shaft. Place spacer
on oil seal and secure with retaining ring.
23.Lubricate both sides of thrust plates with clean hy-
draulic oil. Place thrust plate onto each swash plate
making sure to position the beveled side of the thrust
plates against the swash plate surface.
24.Slide control arm onto each trunnion shaft and se-
cure with socket head screw and nut. Torque nut from 20
to 23 ft–lb (27 to 32 N–m).
1. Oil seal
2. Thrust plate
3. Thrust plate bevel
4. Control arm
Figure 80
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4
3
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4
25.Lubricate all components of cylinder blocks liberally
with clean hydraulic oil. Make sure that all pistons are
placed in cylinder blocks. Taking care to not drop pistons
from cylinder block, slide both cylinder block assemblies
onto pump shafts.
26.Lubricate two (2) new O–rings and install O–rings
into grooves in pipe. Slide pipe assembly into bore of
transmission pump housing.
1. Cylinder block assembly 2. Pipe
Figure 81
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2
27.Lubricate new O–rings and install O–rings onto six
(6) hex plugs. Install plugs into center case. Torque
plugs from 14 to 15 ft–lb (18 to 21 N–m).
28.Lubricate flushing valves with clean hydraulic oil and
place them in center case bores making sure to place
RH and LH flushing valves in correct location.
29.Lubricate new O–rings and install O–rings on two (2)
flushing valve plugs. Install springs and plugs to secure
flushing valves. Torque plugs from 17 to 19 ft–lb (22 to
27 N–m).
1. Hex plug (6 used)
2. RH flushing valve
3. LH flushing valve
4. Center case
Figure 82
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Hydraulic
System