a. Inspect all hoses for leaks, cracks or deterioration.
4-126. CHECKOUT. None required.
b. Inspect radiator cap (18) for worn or deteriorated
4-127. ADJUSTMENT. None required.
c. Inspect radiator (19) for cracks, dents, leaks,
damage to fins or tube restrictions.
c a r b u r e t o r as follows:
d. Inspect non-metallic washers (16) for deterioration.
a. Inspect float (14) for evidence of gasoline in float
e. Inspect for loose or missing hardware.
4-138. CHECKOUT. Fill system with coolant and
b. Inspect shutter valve (6) for bends or damaged
inspect entire system for leaks.
4 - 1 3 9 . ADJUSTMENT. None required.
c. Inspect springs (5, 18, 25 and 46) for breaks or
4-140. ENGINE COOLING.
d. Inspect jets (19, 33 and 34), needle assembly (36)
and screw (45) for damage to control surfaces.
engine cooling group as follows:
4-130. CHECKOUT. Test operate the carburetor.
a. Inspect fan (1) for broken or bent blades.
4-131. ADJUSTMENT. Adjust the carburetor feed and
idle speed. (Refer to Chapter 3, Section III.)
b. Inspect drive belt (4) for breaks or deterioration.
c . Inspect thermostat (14) for proper spring
governor as follows:
d. Inspect hose (8) for breaks or deterioration.
e. Inspect water pump impeller (22) and shaft (27)
a. Inspect filter (25) for cleanliness.
for nicks, burrs and excessive wear.
b. Check piston rod (21), valve shaft (12) and
f. Inspect housings (10 and 28) for breaks and
bearings (13 and 23) for nicks, scores and excessive
4-142. CHECKOUT. Check engine temperature gage
c. Inspect shutter valve (5) for bends or damaged
after fifteen minutes running time. Temperature should
not exceed 180 F.
d. Inspect spring assembly (17) for breaks and
4-143. ADJUSTMENTS. No adjustments are required
for the engine cooling group. Fan belt adjustment is
covered under generator belt adjustment.
e. Inspect body (26) passages for obstructions.
4-134. CHECKOUT. None required.
4-144. PARKING BRAKE AND DIFFERENTIAL
4-135. ADJUSTMENT. Adjust governor to 3000 rpm
by turning cap (14) counter-clockwise to increase and
clockwise to decrease speed.
inspect the parking brake installation as follows:
a. Inspect all linkage for distortion.
b. Inspect brake drum (30, figure 4-35) for heavy
radiator system as follows:
scores or excessive wear.