Glow And Start Relays - Toro Reelmaster 5500-D Service Manual

Glow and Start Relays

The start relay is attached to the radiator shield, and the
glow relay mounts to the hydraulic oil filter bracket. Both
relays are located below the seat (Fig. 12).
Note: The start relay may be manufactured by one of
three different manufacturers. Verify manufacturer
name and part number before performing the resistance
check on the relay coil.
Note: Prior to taking small resistance readings with a
digital multi meter, short the test leads together. The me-
ter will display a small resistance value (usually 0.5
ohms or less). This resistance is due to the internal re-
sistance of the meter and test leads. Subtract this value
from from the measured value of the component you are
testing.
1. Verify coil resistance between terminals 86 and 85
with a multimeter (ohms setting).
A. For the glow relay (Bosch #0 332 002 150), re-
sistance should be from 41 to 51 ohms (Fig. 13).
B. For the start relay (Bosch #0 332 204 182), re-
sistance should be from 80 to 90 ohms (Fig. 14).
2. Ground terminal 86 and apply +12 VDC to terminal
85. The relay should pick up making the sound of a
sharp click.
A. For the glow relay resistance between terminals
30 and 87 should be 1 ohm or less.
B. For the start relay, resistance between terminals
30 and 87A should read as an open circuit.
3. Remove +12 VDC from terminal 85. The relay should
drop out making the sound of a sharp click.
A. For the glow relay resistance between terminals
30 and 87 should read as an open circuit.
B. For the start relay, resistance between terminals
30 and 87A should be 1 ohm or less.
4. Disconnect voltage and leads from all terminals.
Reelmaster 5500-D
2
1. Start relay
2. Glow relay
86
85
86 87A
85
Page 5 - 17
3
1
Figure 12
3. Radiator shield
87
87
30
85 86
Glow Relay
Figure 13
85
87
87A
87
30
86
Start Relay
Figure 14
Electrical System (Rev. C)
30
30