Jeep Cherokee 2000 Service Manual - page 1242
(8) Disconnect the main engine wiring harness
from the glow plugs.
(9) Disconnect the four high–pressure fuel lines
from the fuel injection pump. Also disconnect fuel
lines at the fuel injectors. For procedures, refer to
High–Pressure Fuel Lines in this group. Place a rag
beneath the fittings to catch excess fuel.
(10) Remove the plug from timing gear cover.
(11) The “Top Dead Center” (TDC) compression firing
stroke for the #1 cylinder can be determined as follows:
(a) Using a socket attached to the front of the
crankshaft, rotate the engine clockwise until spe-
cial alignment tool VM# 1043 can be inserted
through the hole in the bottom of the clutch hous-
ing, stopping the flywheel rotation. This position is
TDC or 180° away from TDC. Engine must be at
TDC #1 compression firing stroke.
(b) To verify that you are at #1 TDC Compression.
Remove the oil fill cap from the cylinder head cover
and the alignment tool from the clutch housing.
(c) Rotate the crankshaft one-quarter turn clock-
wise and counter-clockwise while observing the rocker
arm through the oil fill cap hole. If the rocker arm
moves you are not at #1 TDC Compression.
(d) If #1 TDC Compression was found continue,
if not rotate the crankshaft one revolution until the
alignment tool can be re-installed in the flywheel.
You are now at TDC for the #1 cylinder compres-
sion firing stroke. Mark the damper and timing
cover for reference to TDC. Remove the alignment
tool from the clutch housing.
(12) Remove access plug and plug washer at rear
of pump (Fig. 30). Thread special dial indicator and
adapter tool VM.1011 (Fig. 31) into this opening.
Hand tighten only.
Fig. 29 Fuel Injection Pump
1 – FUEL INJECTION PUMP ASSEMBLY
2 – FUEL RETURN LINE
3 – FUEL SUPPLY LINE
4 – FUEL INJECTION PUMP 10–WAY CONNECTOR
5 – FUEL TIMING SOLENOID
Fig. 30 Access Plug at Rear of Pump
1 – ACCESS PLUG
2 – WASHER
Fig. 31 Installing Dial Indicator and Special Adapter
Tools
1 – DIAL INDICATOR TOOL
2 – ADAPTER TOOL VM1011
14 - 16
FUEL SYSTEM—2.5L DIESEL ENGINE
XJ
REMOVAL AND INSTALLATION (Continued)