Toro Groundsmaster 4700-D Service Manual page 171

Removal (Fig. 113)
CAUTION
The radiator and oil cooler may be hot. To avoid
possible burns, allow the engine and cooling
systems to cool before working on the oil cooler.
1. Park machine on a level surface, lower cutting
decks, stop engine, engage parking brake and remove
key from the ignition switch.
2. Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
3. To prevent contamination of hydraulic system during
oil cooler removal, thoroughly clean exterior of cooler.
4. Remove oil cooler using Figures 113, 114 and 115 as
guides.
5. If hydraulic fittings are to be removed from oil cooler,
mark fitting orientation to allow correct assembly. Re-
move fittings from cooler and discard O--rings.
Inspection
1. Back flush oil cooler with cleaning solvent. After cool-
er is clean, make sure all solvent is drained from the
cooler.
CAUTION
Use eye protection such as goggles when using
compressed air.
2. Dry inside of oil cooler using compressed air in the
opposite direction of the oil flow.
3. Plug both ends of oil cooler. Clean exterior of cooler.
Make sure fins are clear of dirt and debris.
4. The oil cooler should be free of corrosion, cracked
tubes and excessive pitting of tubes.
Installation (Fig. 113)
1. If fittings were removed from oil cooler, lubricate and
place new O--rings onto fittings. Install fittings into cooler
openings using marks made during the removal process
to properly orientate fittings. Tighten fittings (see Hy-
draulic Fitting Installation in the General Information
section of this chapter).
Groundsmaster 4500--D/4700--D
2. Install oil cooler using Figures 113, 114 and 115 as
guides (see Hydraulic Hose and Tube Installation in the
General Information section of this chapter).
3. Fill reservoir with hydraulic fluid as required.
1
2
1. Oil cooler latch
2. Hose to oil cooler
1
2
1. Oil cooler latch
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Figure 114
3. Hose from oil cooler
Figure 115
2. Oil cooler
Hydraulic System
1
3