Thermo King 002008, Manual

Page: 62 / 155

Engine Maintenance
62
Injection Pump Timing
This timing procedure requires fuel pressure at the
injection pump inlet. This can be accomplished by
pumping the priming pump by hand, or by using
an electric fuel pump to supply fuel to the fuel
pump inlet.
1. Place the Zone 1/Host On/Off switch in the
Off position.
2. Remove the round cover (plug) from the
timing mark access hole on the front of the
bell housing. The index marks on either side
of this hole and the timing marks on the
flywheel are used to check the injection pump
timing.
3. Remove the injection line for the number one
cylinder from the delivery valve on the
injection pump and from the injection nozzle.
NOTE: The number one cylinder is the
cylinder at the flywheel end of the engine.
4. Remove the rocker arm cover.
5. Place the engine at top dead center of the
compression stroke for the number one
cylinder. Refer to steps a through d.
a. Rotate the engine in the normal direction
of rotation (clockwise viewed from the
water pump end) until the 1-4 timing mark
on the flywheel lines up with the index
mark in the timing mark access hole.
b. Check the rocker arms on the number one
cylinder to see if they are loose.
c. If the rocker arms are loose, the engine is
at top dead center of the compression
stroke for the number one cylinder.
d. If the rocker arms are tight, the engine is at
top dead center of the exhaust stroke for
the number one cylinder. Rotate the engine
360 degrees to place the engine at top dead
center of the compression stroke for the
number one cylinder.
6. Disconnect the 8S wire from the starter
solenoid to prevent the engine from cranking
when the unit is turned On.
7. Place the Zone 1/Host On/Off switch in the
On position.
8. Use the microprocessor keypad to enter the
Relay Board Test Mode. Refer to the
appropriate Microprocessor Diagnostic
Manual for detailed information about the
Relay Board Test Mode.
1. Number One Cylinder Injection Line
2. Timing Mark Access Hole
Figure 30: Component Location
CAUTION: Loosen all of the injection
lines at the injection nozzles to prevent the
possibility of the engine firing while it is
being rotated.
1
2
ARA113
1. Index Mark
2. Top Dead Center Mark for 1 and 4
Figure 31: Top Dead Center One and Four
1 2
AEA701