ENGINE MANIFOLD HEATER PUMP LINES AND FITTINGS REMOVAL AND
REPLACEMENT (TRUCKS WITH ENGINES LDS 427-2 AND LDS 465-l).
TOOLS : Flat-tip screwdriver
7/16-inch open end wrench
9/16-inch open end wrench
l/2-inch open end wrench
9/16-inch socket wrench
3/8-inch open end wrench
Solvent, dry cleaning type II (SD-2), Fed. Spec P-D-680
Sealer compound, type II, Mil Spec S-45180
EQUIPMENT CONDITION: Truck parked, engine off, manifold heater switch in
OFF position, handbrake set.
Take off intake air cleaner.
Refer to para 4-3.
(2) Disconnect battery ground cable. Refer to para 7-58.
Tag all fuel lines before taking them off so
that they will be put back in the same place.
Using 3/8-inch open end wrenches, unscrew coupling nut (1) from union (2).
Pull fuel supply tube (3) away from union (2).
Using 7/16-inch open end wrench, unscrew coupling nut (4) from elbow (5).
4. Pull fuel return tube (6) away from elbow (5).
GO TO FRAME 2