Glow Plug Replacement; Oil Pressure Switch Replacement; Thermostat Removal And Installation - Toro Reelmaster 5100-D Service Manual

Glow Plug Replacement

Replace the glow plug(s) if they do not operate correctly.
(See Glow Plug Test in the Testing section of this chap­
ter.)
1. Remove the nut and lead wire.
2. Clean the area around the glow plug. This will prevent
dirt or other contamination from falling through the glow
plug hole into the cylinder.

Oil Pressure Switch Replacement

The engine is equipped with an oil pressure switch
(Fig. 30). This switch activates a lamp on the control
panel and a buzzer if the oil pressure drops below safe
levels during operation.
Pressure switch ON pressure: 0.5 kg/cm
Replace the switch if it is not operating correctly. Before
installing the switch put a small amount of LOCTITE
#567 Thread Sealant (or equivalent) on the switch
threads. When installing the switch make sure the
sealant does not block the oil hole in the switch.

Thermostat Removal and Installation

1. Lower the coolant level to below the thermostat.
2. Loosen the hose clamp and disconnect the hose from
the water outlet fitting.
3. Remove the water outlet fitting and gasket (Fig. 31).
4. Replace the thermostat if necessary (See Thermostat
Test in the Testing section of this chapter).
5. Do not allow the thermostat flange to protrude from
the water outlet fitting joint. Do not place thermostat stay
in the direction of thermoswitch hole. Use a new gasket
when installing the water outlet fitting.
6. Check for damaged hoses or damaged hose clamps.
Replace as required. Install the hose on the water outlet
fitting and tighten the hose clamp.
®
Reelmaster 223-D/5100-D
2
(7 psi)
Page 3 - 29
3. Remove the glow plug.
4. Install a new glow plug. Tighten the glow plug to a
torque of 11-14.5 ft-lb (1.5-2 KgM).
5. Install the lead wire and nuts.
Figure 30
7. Fill the cooling system to the proper level with a 50/50
solution of clean, soft water and ethylene glycol anti­
freeze (See Checking the Cooling System and Chang­
ing Coolant in the Maintenance section of this book.).
Figure 31
External Engine Component Repair