Cleaning and Inspection - TM-5-4320-234-340048

TM 5-4320-234-34

Figure 3-2. Governor removal, exploded view

Inspect the governor for cracks, missing

3-5. Cleaning and Inspection

parts, wear and other obvious damage. Check the

rotation of the governor drive shaft. It must turn freely

WARNING

without catching or binding. Check the movement of the

governor lever shaft in its needle bearings. It must pivot

Clean all parts in a well-ventilated area.

freely without catching or binding and without excessive

Avoid inhalation of solvent fumes and

play. Replace a damage governor.

prolonged exposure of skin to cleaning

solvent. Wash exposed skin thoroughly.

3-6. Installation

Dry cleaning solvent (fed. spec. P-D-680)

used to clean parts is potentially

Install the governor by reversing the removal

dangerous to personnel and property. Do

procedure. Refer to figure 3-2 and note the following:

not use near open flame or excessive heat.

Flash point of solvent is 100 to 138 F (38 to

(1) The magneto must be removed to

59 C).

enable proper timing of the governor drive gear with the

timing gear.

Clean the exterior of the governor with a

cloth dampened with cleaning solvent (fed. spec. P-D-

(2) Sight through the magneto mounting

680). Wipe dry.

hole to check that the two marked teeth of the governor

drive gear engage the single marked tooth of the cam

Clean all remainng parts with cleaning

gear as shown in figure 3-3.

Ignition timing is

solvent; dry thoroughly.

dependent upon this relationship because the magneto

is driven by the governor drive gear.

3-3