Toro Groundsmaster 5900 Series Service Manual page 261

Hydraulic Oil Cooler Removal
Hydraulic Oil Cooler Inspection
Groundsmaster ® 5900 & 5910
16227SL Rev B
(Figure 133) (continued)
4. To prevent contamination of hydraulic system during oil cooler removal,
thoroughly clean exterior of oil cooler, fittings and hydraulic hoses.
5. Disconnect the oil cooler hydraulic hoses at the frame bulkhead fitting (right
side of machine) and allow the cooler to drain.
6. Disconnect hydraulic hose from oil cooler (left side of machine) Put caps or
plugs on oil cooler and hydraulic hose openings to prevent contamination.
7. Disconnect both electric cooling fans from the machine wire harness.
8. Remove the four (4) cap screws and flat washers securing the electric cooling
fan assembly to the oil cooler and remove the fan assembly.
9. Remove the four (4) cap screws, washers and flange nuts securing the oil
cooler to the cooler frame and remove the oil cooler.
10. Remove hydraulic fittings from oil cooler if necessary and discard O−rings.
1. Back flush oil cooler with cleaning solvent. After cooler is clean, make sure
all solvent is drained from the cooler.
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. Clean exterior of cooler. Take care not to damage cooler fins. Make sure
all fins are clear of dirt and debris.
4. The oil cooler should be free of corrosion, cracked tubes and excessive
pitting of tubes.
5. Check oil cooler isolator mounts (4) for damage. Replace isolator mounts
as needed.
6. Inspect cooling fan assembly foam seals for evidence of wear or damage.
Replace seals as needed.
CAUTION
Page 5–161 Hydraulic System: Service and Repairs