Service Manual

INJECTOR PUMP

Checking Injector Pump Timing

NOTE: Clean areas around fuel lines and injec-

tors to prevent any dirt from entering

injector nozzles or delivery valve ports

when fuel delivery lines are removed.

1. Remove fuel delivery lines from injector pump and

injector nozzles, Fig. 1.

Fig. 1 – Removing Fuel Lines

2. Set No. 1 piston at TDC:

a. Rotate crankshaft until timing mark on pulley

is aligned with reference point on timing cover,

Fig. 2.

b. If intake and exhaust valves have clearance,

No. 1 piston is at TDC – compression stroke.

c. If intake and exhaust valves do not have clear-

ance, turn crankshaft pulley one complete

revolution. Valves will then have clearance.

Fig. 2 – Align Timing Marks

REFERENCE

POINT

TIMING

MARK

3. Remove distributor head screw with washer and

install injector pump timing gage,dial indicator Tool

# 19441, Fig. 3.

Fig. 3 – Install Timing Tool

TOOL #19441

DIAL INDICATOR

4. Slowly rotate crankshaft counter-clockwise until

dial indicator needle just stops moving. Set dial

indicator at ‘‘0,” Fig. 4.

NOTE: When indicator needle just stops moving,

carefully rock crankshaft clockwise slight-

ly, then counter-clockwise slightly to verify

absolute ‘‘0.”

Fig. 4 – Setting Indicator