Glow Plug Timer (Workman Hdx--D) - Toro Workman HDX Service Manual

Glow Plug Timer (Workman HDX- -D)
The glow plug timer is attached to the relay bracket un-
der the right side of the bed near the rear axle (Fig. 36).
NOTE: Refer to electrical schematic and circuit draw-
ings in Chapter 11 -- Electrical Drawings when trouble-
shooting the glow plug timer.
Glow Plug Timer Operation
1. When the ignition switch is initially turned to the ON
position, the timer energizes the glow plugs and illumi-
nates the glow lamp for approximately five (5) seconds.
2. When the ignition switch is turned to the START posi-
tion, the glow plugs will energize and the glow lamp will
light for fifteen (15) to twenty (20) seconds.
3. When the ignition switch is released from START to
ON, the glow plugs will energize and the glow lamp will
light for approximately fifteen (15) seconds.
Glow Plug Timer Checks
1. Make sure there is power from the battery.
2. Disconnect wire harness connector from the engine
run solenoid to prevent the engine from starting.
3. Place ignition switch in the ON position. Verify the fol-
lowing while in the ON position:
A. Dash glow indicator lamp is illuminated.
B. Glow relay is energized.
C. Glow plugs are energized.
D. Glow indicator lamp goes out and glow plugs de--
energize after approximately five (5) seconds.
4. Place ignition switch in the START position. Verify the
following while in the START position:
A. Dash glow indicator lamp is illuminated.
B. Glow relay is energized.
C. Glow plugs are energized.
D. Power exists at terminal 5 of the glow plug timer.
NOTE: If there is no power at terminal 5 of the glow
plug timer, verify continuity of the circuitry from the
ignition switch to the timer and perform step 4 again
(see electrical schematic in Chapter 11 -- Electrical
Drawings).
Workman HD Series
1
1. HDX- -D relay bracket
1
+12V
PINK
START
GRAY
GLOW
VIOLET
1. Glow plug timer
5. If any of the conditions in step 3 or step 4 are not met:
A. Verify continuity of the circuitry from the battery to
the glow relay and glow plugs (see electrical sche-
matic in Chapter 11 -- Electrical Drawings).
B. Verify continuity of the circuitry from the battery to
ignition switch, glow plug timer, glow indicator lamp,
glow relay and ground (see electrical schematic in
Chapter 11 -- Electrical Drawings).
C. Replace parts as necessary.
6. After testing is complete, connect wire harness con-
nector to the engine run solenoid.
Page 8 - - 25
Figure 36
2. Glow plug timer
4 1
5 2
6 3
TIMER
CONNECTIONS
4 1
5 2
GROUND
6
3
BLACK
Figure 37
2. Timer terminals
Electrical System
2
2