5.
Inspect wear plates for the following:
8. Install rear wear plate with pressure seal side up and
open side of the pressure seal pointing to the suction
side of the pump.
A. Bearingareasshouldnothaveexcessive wearor
scoring.
9.
and o--ring grooves in the front body. Install new o--rings
to the front body.
Applyalightcoatingofpetroleumjellytonewo--rings
B. Face of wear plates that are in contact with gears
should be free of wear, roughness or scoring.
C. Thickness of wear plates should be equal.
10.Install
locatingdowelsinfrontbody.Alignmarkerline
on the body and front plate.
6.
Inspect front plate, back plate, and adapter plate for
damage or wear.
IMPORTANT: Do not dislodge pressure seals,
back--upgasketsoro--ringsduringpumpassembly.
Assembly (Fig. 71)
11.
hand pressure should be sufficient to engage the dow-
els.
Gently slide the front body onto the assembly. Firm
Note:
line on each part to make sure the parts are properly
aligned during reassembly.
When assembling the pump, check the marker
12.Check
tomakesurethatthesurfaceofthewearplate
1.
and wear plates with a thin coat of petroleum jelly. Lubri-
cateallotherinternalpartsfreelywithcleanhydraulicoil.
Lubricate o--rings,pressureseals,back--upgaskets,
is slightly below the face of the front body. If the wear
plate is not below the front body, check assembly for a
shifted pressure seal or o--ring.Correct before proceed-
ing.
NOTE: A seal and retaining ring are not necessary in
the front plate. The gear pump seal kit does not include
these parts.
13.Apply
alightcoatingofpetroleumjellytotheexposed
side of the adapter plate.
2.
machined surface facing up.
Place front plate on a flat surface with the internal
14.Place
for proper location. Firm hand pressure should be suffi-
cient to engage the dowels.
adapter plate on assembly using marker line
3.
Apply a light coating of petroleum jelly to the pres-
sure seals, back--up gaskets, and wear plate grooves.
15.Install
coupler into drive gear.
4.
Install the pressure seals, flat side outward, into the
16.Follow
pump using the same precautions, lubrication, and
alignment.
above procedure to install back section of the
grooves in the wear plates. Follow by carefully placing
the backup gaskets, flat side outward, between the
pressure seals and the groove in the wear plate.
17.Install
the four screws and hand tighten.
5.
Applyalightcoatingofpetroleumjellytotheexposed
side of the front plate.
18.Place
mounting flange of the pump into a vise with
soft jaws. Alternately torque the screws from 38 to 43 ft--
lb (51 to 58 N--m).
6.
Lubricatethedrivegearshaftwithcleanhydraulicoil.
Insert the drive end of the drive shaft through the wear
platewiththepressuresealsidedownandtheopenside
of the pressure seal pointing to the suction side of the
pump. Carefully install shaft into front plate.
19.Remove
pump from vise.
20.Place asmallamountofcleanhydraulicoilintheinlet
ofthepumpandrotatethedriveshaftawayfromtheinlet
one revolution. If any binding is noted, disassemble the
pump and check for assembly problems.
7.
Lubricate thefront idlergear shaftwith clean hydrau-
lic oil. Install idler gear shaft into the remaining position
in the wear plate. Apply a light coating of clean hydraulic
oil to gear faces.
Hydraulic System (Rev. D)
Page 4 -- 104 Rev. F
Groundsmaster 3500--D
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| Language | English |
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