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Toro 04470 Service Manual

Toro 04470
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Greensmaster 3250--D Hydraulic SystemPage 4 -- 5 9
6. Support the pump assembly and gently tap the
pump housing with a soft face hammer to loosen the
pump sections. Be careful to not drop parts or disen-
gage gear mesh.
IMPORTANT: Mark therelativepositions of the gear
teeth and the thrust plates so they can be as-
sembledinthesameposition. Donottouchthegear
surfaces as residue on hands may be corrosive to
gear finish.
7. Remove thethrustplatesand seals fromeachpump
section. Before removing each gear set, apply marking
dye to mating teeth to retain ”timing”. Pump efficiency
maybeaffectediftheteetharenotinstalled in the same
positiond uring assembly.Keeptheparts foreachpump
section together; do not mix parts between sections.
8. Clean all parts. Check all components for burrs,
scoring, nicks and other damage.
9. Replacetheentirepumpassemblyifanypumpcom-
ponents are excessively worn or scored.
Gear Pump Assembly (Fig. 35)
1. Apply clean hydraulic oil to all parts before assem-
bling.
NOTE: Pressure and back--up seals fit in grooves ma-
chinedintothrustplates.BodyO--ringsfitingroovesm a-
chined in housing.
2. Assemble pump sectionsstarting at front cover end.
Apply grease or petroleum jelly to new section seals to
hold them in position during gear pump assembly.
3. After pump has been assembled, tighten socket
headscrewsbyhand.Rotatethedriveshafttocheckfor
binding.Protecttheshaft if using a pliersto rotateshaft.
4. Tighten the socket headscrews evenly in a crossing
patterntoatorqueof33 ft--lb (45 N--m).
Hydraulic
System

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Toro 04470 Specifications

General IconGeneral
BrandToro
Model04470
CategoryLawn Mower
LanguageEnglish

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