Reassembly
10.Install key (17) in slot of drive gear shaft. Dip slip fit
gear(18)incleanhydraulicoilandslideonshaftandinto
gear pocket of middle body (19). Check key for proper
alignment.
It is important that the relationship of the backplate,
adapter plates, bodies, wear plates and front plate is
correct. The two half moon cavities in the bodies must
face away from the front plate or adapter plate. The
smaller half moon port cavity must be on the pressure
side of the pump. The side of the wear plate with mid
section cutoutmustbe onsuction sideofpump.Suction
side ofbackplate or adapter plate is always the side with
larger port boss.
11.Dip idler gear (21) in clean hydraulic oil and install in
gear pocket of middle body.
12.Install
rearadapterplate(24)inplaceonmiddlebody
(19).
Check positioning mark on all sections of pump.
13.Position
rear body (26) onto rear adapter plate (24).
Place wear plate (12) into the gear pocket with the pres-
sure seal and backup gasket against the rear adapter
plate.
1.
Replace the wear plates, pressure seals, backup
gaskets, shaft seal and o--rings as new parts. During re-
assembly, check the scribe mark on each part to make
sure the parts are properly aligned.
14.Install
key (22) in slot of drive gear shaft. Dip slip fit
gear(20)incleanhydraulicoilandslideonshaftandinto
gear pocket of rear body (26). Check key for proper
alignment.
2.
er plates (23 and 24), and backplate (27) using a small
amount of petroleum jelly to hold in place.
Install o--rings (4) in groove of front plate (15), adapt-
15.Dip
install in gear pocket of rear body.
rear idler gear (25) in clean hydraulic oil and
3.
(14)
Install new pressure seals (13) and backup gaskets
into new wear plates (12). The flat section in the
middle of the backup gasket must face away from the
wear plate inside the seal.
16.Position
in body are engaged.
backplate (27) over shafts until dowel pins
4.
5.
Place plug (8) into pocket of front plate (15).
17.Secure
Torque cap screws evenly in a crisscross pattern from
pump components with cap screws (3).
Applyathincoatofpetroleumjellytobothmilledgear
25
to 28 ft--Ib (34 to 38 N--m).
pockets of front body (10). Position body onto frontplate
with half moon port cavities in body facing away
(15)
18.Place
washer(2)overdriveshaftintohousing.Liber-
from front plate.
ally oil shaft seal (1) and install over drive shaft carefully
so that rubber sealing lips are not cut.
NOTE: The small half moon port cavity must be on the
pressure side of pump.
19.Place
1--3/8” O.D. sleeve over shaft and press in
shaft seal .200” (5.08mm) below surface of front plate.
6.
Place wear plate (12) into the gear pocket with the
pressure sealandbackupgasketagainstthefrontplate.
The side with the mid section cut away must be on suc-
tion side of pump.
20.Install
plug (7) and o--ring (9) into rear adapter plate.
21.If
removed, install plug (28) with o--ring into back-
plate and torque from 21 to 24 ft--lb (29 to 33 N--m).
7.
Dip drive gear assembly (11) and idler gear assem-
bly (16) into clean hydraulic oil. Slip both gear assem-
blies into gear pocket of front body (10) and into front
plate bushings.
22.Install
plug from 21 to 24 ft--lb (29 to 33 N--m).
proportional valve (6) into backplate. Torque
8.
(10).
Install front adapter plate (23) in place on front body
Check positioning marks for correct orientation.
9.
Install middle body (19) onto front adapter plate (23).
Place wear plate (12) into the gear pocket with the pres-
sure seal and backup gasket against the front adapter
plate.
Hydraulic System (Rev. A)
Page 4 -- 60
Groundsmaster 4500--D/4700--D
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Document Type | Service Manual |
| Language | English |
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