(B) Engine Coolant; (C) Engine Lubricating Oil; Installing Output Cables; Units Are Generally Shipped Without Generator Set-To-Aircraft Cables. 1-2 - Hobart 90 C 20 Operation And Maintenance Manual

OM-2031

(b) Engine coolant

The radiator cap is accessible by opening the hinged access cover on the front canopy housing. Cool-
ant level should be approximately one inch below the filler neck. Allow a capacity for coolant expan-
sion.
CAUTION: BE SURE THE COOLING SYSTEM ANTIFREEZE SOLUTION IS ADEQUATE TO PRO-
TECT BELOW LOWEST TEMPERATURE EXPECTED.
NOTE: For antifreeze protection, use a solution of 50% permanent antifreeze (Ethylene glycol) and 50%
clean water.

(c) Engine lubricating oil

Oil level should be at "FULL" mark on oil level gage rod. See the Perkins Shop Manual for oil recom-
mendations.
(7) Check air cleaner
The air cleaner (Sect. 1-1, Fig. 3, item 8) is a "dry" type. Be sure there are no papers, tapes, or other
material covering the air inlet area.
C. Installing Output Cables
Units are generally shipped without generator set-to-aircraft cables.
NOTE: Generator sets designed for tractor mounting are equipped with a generator output receptacle
connector. No output cable wiring is required. An output cable assembly with plug connector on each
end is required for tractor-mounted machines (see 1-1; 12, Fig. 3).
(1) Three-phase, AC output cable assembly installation
The AC output terminal panel is located on the left side, below the air cleaner and left of the engine
control panel (see Fig. 1).
(a) Open left rear canopy doors and loosen cable clamp screws at cable horn (see 1-1; 13, Fig. 3).
(b) Route cables through cable horn and clamp and upward to terminal board.
NOTE: Conductor size recommended for AC output is 2/0 size. Use No. 12 size for control (E and F
terminals). Large cables (A, B, C, N) should be equipped with terminals having at least a 3/8-inch diameter
mounting hole. Mounting hole in small leads (E and F) should be at least 1/4-inch diameter.
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August 5/89 Revised