Toro Groundsmaster 328-D, Service Manual

Page: 63 / 402

Water Pump Servicing
The water pump is a centrifugal impeller type pump
which is mounted on the front upper part of the cylinder
block. The pump bearings and seals are not service-
able.
Water Pump Removal
1. Drain the coolant from the radiator and cylinder block
(drain plug on the left-hand side of the block).
2. Disconnect the water hoses.
3. Remove the V-belt which drives the water pump.
4. Disconnect the water bypass hose.
5. Remove the six bolts fastening the water pump to the
cylinder block.
Water Pump Inspection
1. Inspect all hoses for cracks or leaks.
2. Rotate the water pump impeller and shaft. If the
bearings do not rotate smoothly, or are noisy, the water
pump must be replaced; the water pump has no replace-
able components.
Water Pump Reassembly
Reassemble in reverse order of disassembly. Use a new
water pump gasket to avoid leaks.
now move freely when operated by hand. If it does not,
difficulty with the injection pump should be suspected.
Groundsmaster
®
300 Series Page 4 - 33 External Engine Component Repair