MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
62
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 2-12-20 Adjusting the throttle pedal
Fig. 2-12-21 Measuring the voltage at the
glow plug end with a universal meter
6.2 Adjustment to the throttle control cable
(1) Loosen the throttle wiring bracket bolt.
(2) Check if the idling control button is located in the idling
position of diesel engine.
(3) Make sure that the throttle connecting rod is
completely closed, and then tighten the control cable to
remove looseness.
6.3 Adjustment to throttle pedal
(1) Loosen the lock nut.
(2) Adjust the height between bolt and base plate.
Adjust the height between bolt and base plate.
18
～
28 mm
(3) Check if the throttle pedal is 5
～
10mm upper the
pedal buffer. See Fig. 2-12-20.
(4) Press the throttle to its end and check if the diesel
engine operates at the highest speed and check if all
connections operate stably.
7. Quick start-up system
Checking procedure for the quick start-up system II:
(1) Place the start-
up switch to the ―OFF‖ position.
If the quick start-up system II works formally, the glow
relay will give clicking sounds within 15 s after the switch
is connected.
(2) After the start-
up switch is switched to the ―OFF‖
position, measure the voltage at the glow plug end with a
universal meter.
Voltage at the glow plug end
About 12 V
