Usage:
3116 Truck Engines
- SUPPLEMENT: 12/01/93
Truck Engine News, August 1993, Page 1, "New Fuel Injection Control Linkage".
Disregard this article. See the article titled "New Control Assemblies Used In Fuel Injection Control Groups" in this issue.
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Description of Change: The new control assembly uses close clearance shaft bearings and is installed differently than the former control. All bearing supports are factory set on the former control.
Adaptable To: The new 4P9047 Control Assembly is a direct replacement for the former 7C1516 Control Rack Assembly on the 7W6989 Fuel Injection Control Group.
Use the following procedure for assembly on the 7W6989 Fuel Injection Control Group:
1. Assure two 6V5698 Screws in inboard bracket(s) are loose.
2. Tighten the bolts for outer bearing brackets A and D to 3.5 ± 0.2 N·m (2.6±.1 lb ft) after installed on the engine.
3. Tighten the bolts for inner bearing brackets B and C to 3.5 ± 0.2 N·m (2.6±.1 lb ft) after installed on the engine.
4. Position the inner B and C bearings to allow free rotation of the rack control rod.
5. Tighten 6V5698 Screws on inboard brackets to 3.5 ± 0.2 N·m (2.6 ± .1 lb ft).
6. Control rod must rotate when force of 4.4 N (1 lb) or less is applied to control lever in direction indicated by arrows.
Location of components on 7W6989 Fuel Injection Control Group.