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Groundsmaster 5900/5910 Page 3 -- 29 Diesel Engine
Removal (Fig. 25)
1. Park machine on a level surface, lower cutting
decks, stop engine, engage parking brake and remove
key from the ignition switch.
2. Raise and support hood to allow access to engine.
CAUTION
Do not open radiator cap or drain coolant if the
radiator or engine is hot. Pressurized, hot cool-
ant can escape and cause burns.
Ethylene--glycol antifreeze is poisonous. Dis-
pose of coolant properly, or store it in a properly
labeled container away from children and pets.
3. Draincoolantfromradiatorandengine(see Radiator
Removal in this section).
4. Disconnect wire harness connector from tempera-
ture sensor on water pump housing (Fig. 26).
5. Remove upper and lower radiator hoses from water
pump.
6. On Groundsmaster 5910 machines:
A. Remove cab heater hoses from water pump.
B. Remove A/C compressor drive belt.
7. Remove alternator and drive belt from engine (see
Alternator Removal in this section).
8. Remove four (4) cap screws that secure water pump
to engine.
9. Carefully remove water pump from engine.
10.Remove and discard O--ring and gasket from be-
tween water pump and engine.
11.If necessary, remove thermostat from water pump
(see Thermostat Removal in this section). Make sure
that gasket surfaces on water pump and thermostat
housing are thoroughly cleaned.
12.If necessary, remove pulley from water pump.
A. Remove four (4) cap screws that secure pulley to
pump shaft.
B. Pull pulley from pump shaft.
Installation (Fig. 25)
1. Make sure that gasket surfaces on engine, water
pump and thermostat housing are thoroughly cleaned.
2. Positionnew O--ring and gaskettowaterpumphous-
ing.
3. Secure water pump to engine with four (4) cap
screws.
4. Ifpulleywas removed from water pump shaft,secure
pulley with four (4) cap screws. Torque cap screws 23
ft--lb (31 N--m).
5. If thermostat was removed from water pump, install
thermostat to water pump (see Thermostat Installation
in this section).
6. Install upper and lower radiator hoses to water
pump. Secure hoses with hose clamps.
7. On Groundsmaster 5910 machines:
A. Install and secure cab heater hoses to water
pump.
B. Install and adjust A/C compressor drive belt.
8. Connect wire harness connector to temperature
sensor on water pump (Fig. 26).
9. Install alternator and drive belt to engine (see Alter-
nator Installation in this section). Adjust drive belt.
10.Fill cooling system with coolant.
11.Run engine and check for any coolant leaks.
12.Lower and secure hood.
Figure 26
1. Water pump 2. Temperature sensor
1
2
Diesel
Engine