Transmission Overhaul
As the transmission components are removed for ser•
vice and inspection, it should be noted that nominal
wear to the components is acceptable. Critical contact
surfaces (i.e. charge pump gerotor, piston slippers, etc.)
must be in good condition or the system will be
inefficient.
by a minimum amount of polishing or touch lapping;
rework and use them again.
When scratches or grooves can be detected by "feel"
with a fingernail or lead pencil, the part should be
replaced. Polishing or touch lapping can be ac•
complished using 4/0 grit sandpaper on a flat lapping
table (table must be kept flat). Polish parts using polish•
ing solvent or equivalent. Do not polish parts dry.
When components have circumferential scratches or
grooves noted onthe running surfaces, it is anindication
of foreign material in the hydraulic oil.
IMPORTANT: Lapping plate must be flat within
0.00005 inch.
If upon inspection of the critical contact surfaces you
notice circumferential scratches that might be removed
Separating Transmission Into Sections (Fig. 23)
The transmission must be separated into three main
sections to perform major overhaul. The three sections
are: pump section, center section, and motor section.
6. Pull the pump housing away from the center section.
Do not let the internal parts fall out of the housing
because damage may result.
NOTE: The following procedures are for major overhaul
of the in-line transmission. Servicing the charge pump,
seals and valves is covered on previous pages.
NOTE: The pump valve plate will probably adhere to the
side of the center section. Do not let it fall when separat•
ing the pump housing from the center section.
1.
Before separating the transmission, scribe or paint an
7. Remove the pump valve plate and gasket.
alignment mark on each housing to assure correct
reassembly of the sections.
8. Set the pump housing and pump valve plate aside.
Keep the pump valve plate separate from the motor
valve pla te bec aus e the se par ts are no t
interchangeable.
2.
Remove the four cap screws in small increments so
the three main sections separate evenly. As the cap
screws are loosened, oil will drain from the housings.
NOTE: When the cap screws are first loosened, an
internal spring load causes the sections to separate
slightly.
3.
Whenthe four cap screws areremoved,pull themotor
housing away from the center section. Do not let the
internal parts fall out of the housing because damage
may result.
NOTE: The motor valve plate will probably adhereto the
side of the center section. Do not let it fall when separat•
ing the motor housing from the center section.
4.
5.
Remove the motor valve plate and gasket.
Set the motor housing and motor valve plate aside.
Keep the motor valve plate separate from the pump
valve pla te bec aus e the se par ts are no t
interchangeable.
Figure 23
Repairs
Page 5 - 34
Groundsmaster® 300 Series
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Tags | Toro Groundsmaster 300, Toro Groundsmaster 328 D, Toro Groundsmaster 92801SL |
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| Document Type | Service Manual |
| Language | English |
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| Wikipedia's Page | Toro Company |
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(2 votes, average: 5 out of 5)
Lawn and Garden readers have rated Toro 92801SL Rev I Groundsmaster 300 Series Groundsmaster 328 D Service Manual 5.0 out of 5.0 based on 2 product reviews. Need 328D. Manual pdf. Will rate after finding manual
t has been a very reliable machine but getting parts is hard and not cheap to buy , generic parts has been cost effective and reliable , i am unable to get a wiring circut diagram for this unit as most problems are electrical problems