Ignition Rotor - Alignment Procedure
83ford18Article No. 83-8-14
EEC III/DISTRIBUTOR - PROCEDURE FOR SETTING ROTOR ALIGNMENT 5.0L/5.8L EEC EQUIPPED LIGHT TRUCKS
LIGHT TRUCKS 1981/83 BRONCO, F-SERIES AND ECONOLINE
The following information and procedures are issued to clarify the proper setting of distributor rotor alignment on the subject vehicles. This reference publication supersedes all other printed material on subject.
FIGURE 12:
FIGURE 13:
For 1981 through 1983 model year vehicles, EEC distributors used on the EEC Systems had the "second generation" rotor (Figure 12). The 1983 model 5.0L EEC equipped Light Truck employs a conventional rotor (Figure 13).
PROCEDURE FOR ROTOR ALIGNMENT:
1. Remove the distributor cap and wires and position them to one side.
2. Remove the rotor.
3. To check rotor alignment:
a. Rotate the engine until the No. 1 piston is on the compression stroke. NOTE: Verification of being on the compression stroke is essential to correct rotor alignment. If the piston is on the exhaust stroke, the rotor can be misaligned by 180~.
b. Slowly rotate the engine until the alignment tool can be installed.
FIGURE 14:
c. The T79P-12200-A tool mounts between the slot on the sleeve and the slot (cut out) on the adapter (Figure 14).
d. Read the timing mark on the damper indicated by the timing pointer.
e. If the timing mark is specification, TDC +/- 4~, the rotor alignment is satisfactory. The alignment tool can be removed.
TO ADJUST ROTOR ALIGNMENT:
1. Remove the distributor cap by loosening the two spring clips holding the cap of the distributor adapter. Remove rotor.
2. Rotate engine until No. 1 piston is on the compression stroke. (See Step 3a above).
3. Slowly rotate the engine until the timing pointer is aligned with the specified timing mark. (TDC +/- 4~).
4. Loosen the two sleeve assembly adjustment screws and rotate the sleeve until the alignment tool T79P-
FIGURE 14:
12200-A fits into the alignment slots on the sleeve and the adapter (Figure 14).
5. Tighten the adjustment screw to 2.8-3.9 N-m (25-30 lb.in.). Remove alignment tool.
FIGURE 13:
6. If the vehicle is a 1983 model equipped with a 5.0L engine, coat the rotor with silicone grease as shown in Figure 13.
7. Reinstall distributor cap and rotor making sure wires are firmly seated in the distributor cap terminal housings and on the spark plugs.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"