Service Manual

Groundsmaster 7200/7210Hydraulic System Page 4 – 74
30.Lubricate O–rings and backup rings for bypass
valves. Position rings on bypass valves and install
valves into center case. Torque valves from 62 to 79 in–
lb (7 to 9 N–m).
31.Lubricate sealing washers and install onto forward
and reverse relief valve cartridges.
IMPORTANT: The forward and reverse relief car-
tridges are different. Use labels made during disas-
sembly to make sure the relief cartridges are
properly installed.
32.Thread relief cartridges into correct center case
ports and torque from 24 to 27 ft–lb (32 to 37 N–m). The
reverse relief valve cartridges can be identified by the
groove in the hex head (Fig. 84).
33.Apply clean grease to mating surfaces of center case
and valve plates to hold valve plates in position during
assembly. Install valve plates to dowel pins in center
plate.
1. Bypass valve
2. Center case
3. Reverse relief cartridge
4. Forward relief cartridge
5. Valve plate
Figure 83
2
5
1
4
4
3
3
1. Forward relief cartridge
2. Reverse relief cartridge
3. Hex head groove
Figure 84
3
1
2
34.Install two (2) pins into transmission pump housing
bores. Position new gasket on pump housing.
35.Position center case assembly to transmission pump
housing making sure that valve plates remain in posi-
tion.
36.Secure center case to transmission pump housing
with eight (8) socket head screws. Tighten screws even-
ly in a crossing pattern and then torque screws from 17
to 19 ft–lb (22 – 27 N–m).
1. Center case
2. Pump housing
3. Pin (2 used)
Figure 85
2
1
3