Assembly (Fig. 28)
NOTE: When assembling the pump, check the marker
lineoneachparttomakesurethepumpcomponentsare
properly aligned during assembly (Fig. 29).
3
2
1.
Lubricate O--rings, pressure seals, back--up seals
and thrustplate grooves with athin coatofpetroleum jel-
ly.Lubricate allotherinternalparts freelywithcleanDex-
ron III ATF.
2.
Install new seal into front cover and rear flange (HDX
1
and HDX--D):
4
A. Press shaft seal into seal bore until it reaches the
bottom of the bore.
Figure 30
1.
2.
Gear shaft spline
Gear shaft
3.
4.
Gear teeth
Gear face edge
B. Install retaining ring into the groove of the cover.
3.
the grooves in the front and rear thrust plates. Install lu-
bricated O--rings to the body.
Install the lubricated pressure and backup seals into
11.Install two (2) dowel pins into body (HDX and HDX--
D).
12.Align
marker line on the body and rear flange.
4.
Apply a light coating of petroleum jelly to the exposed
side of the front cover.
Place front cover, seal side down, on a flat surface.
IMPORTANT: When installing rear flange on HDX
and HDX--D pumps, make sure that shaft seal (item
18)
is not damaged.
5.
Carefully insert the drive end of the drive shaft through
the front thrust plate with the pressure seal side down.
Lubricate the drive shaft with clean Dexron III ATF.
13.Carefully
ing.
install rear flange onto pump assembly tak-
14.Install
and hand tighten.
the four (4) screws (item 17) with lock washers
IMPORTANT: When installing drive shaft into front
cover, make sure that shaft seal (item 2) is not dam-
aged.
IMPORTANT: Prevent damage when clamping the
pump into a vise; clamp on the front cover only.
Also, use a vise with soft jaws.
6.
Carefully install shaft with front thrust plate into front
cover taking care to not damage shaft seal.
15.Place
jawsandalternatelytorquethecapscrews220in--lb(25
N--m).
front cover of the pump into a vise with soft
7.
Lubricate the idler shaft with clean Dexron III ATF.
Install idler shaft into the remaining position in the front
thrust plate. Apply a light coating of clean hydraulic oil to
gear faces.
16.On
HDX and HDX--D pumps, lubricate O--ring (item
20)
Installcovertorearflangeandsecurewithtwo(2)socket
head screws. Torque screws 130 in--lb (15 N--m).
withathincoatofpetroleumjellyandinstalloncover.
8.
open side of the seals pointing to the inlet side of the
pump.
Installrearthrustplatewithpressuresealsideupand
17.Remove
pump from vise.
9.
Install two (2) dowel pins into front cover. Align mark-
er line on the body and front cover.
18.Place
a small amount of clean Dexron III ATF in the
inletofthepumpandrotatethedriveshaftaway fromthe
inlet one revolution. If any binding is noted, disassemble
the pump and check for assembly problems.
IMPORTANT: Do not dislodge seals during installa-
tion.
10.Gently
slide the body onto the assembly. Firm hand
pressure should be sufficient to engage the dowel pins.
Hydraulic System
Page 9 -- 38
Workman HD Series
| 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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