Groundsmaster 4500--D/4700--D Hydraulic SystemPage 4 -- 137
Removal (Fig. 113)
CAUTION
The radiator and oil cooler may be hot. To avoid
possible burns, allow the engine and cooling
systemstocool before workingonthe 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. Topreventcontaminationofhydraulicsystemduring
oil cooler removal, thoroughly clean exterior of cooler.
4. RemoveoilcoolerusingFigures113,114and115as
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. Backflushoilcoolerwithcleaningsolvent.Aftercool-
er is clean, make sure all s olvent 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 endsof oil cooler. Cleanexterior ofcooler.
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 fittingswereremovedfromoilcooler,lubricateand
placenewO-- ringsontofittings.Installfittingsintocooler
openingsusingmarksmadeduringtheremovalprocess
to properly orientate fittings. Tighten fittings (see Hy-
draulic Fitting Installation in the General Information
section of this chapter).
2. Install oil cooler using Figures 113, 114 and 115 as
guides (see Hydraulic Hose and TubeInstallation in the
General Information section of this chapter).
3. Fill reservoir with hydraulic fluid as required.
1. Oil cooler latch
2. Hose to oil cooler
3. Hose from oil cooler
Figure 114
1
1
3
2
1. Oil cooler latch 2. Oil cooler
Figure 115
1
2
Hydraulic
System
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