Lock washer (2)
Governor drive housing
L o c k washer
(b) Pilot valve (49) lands.
2. Seals (50) must be removed from
the outside of the housing. Do not attempt
(c) Bushing (55) O.D.
to push towards center of housing.
(d) Shaft (56) spline end,
(e) Speed adjusting shaft (13)
( f ) Terminal shaft (25) O.D.
(g) Idler gear stud (66).
moderately toxic to skin, eyes and
respiratory tract. Eye and skin
(h) Drive gear (59) O.D.
protection required. Good general
(i) Relief valve (33) O.D.
ventilation is normally adequate.
(j) Replace parts that have ex-
Compressed air used for cleaning and
ceeded maximum-allowable wear limits.
drying purposes can create airborne
particles that may enter the eyes.
2. Inspect ground bottom surface of
Pressure shall not exceed 30 psig.
c a s e (69) for grooves, scratches or wear.
Eye protection is required.
3 . Inspect the ground flat surface
1. Clean all parts in unapproved
of the base (62) for warpage, nicks, or
cleaning solvent and dry with a lint free
d e e p scratches.
4. Inspect the pump gears (58 and
Use extreme care when polishing
59) as follows:
(a) Place the pump gears in the
control land. L e a v e corners sharp;
gear pockets and check for free rotation,
broken or rounded corners on this
land will ruin the valve.
(b) If the gears turn roughly,
2. Polish parts using No. 320 to
inspect for nicks or wear of the gear teeth,
500 fine grit emery cloth.
b. GOVERNOR DRIVE HOUSING. Clean
the gear pockets in the base (62).
all parts in an approved cleaning solvent
5. Check clearance between piston
and dry with a lint free cloth.
(40) and case (69), piston should move
freely without binding or catching.
a. UTILITY GOVERNOR
1 . Refer to table l-1, and using a
Excessive clearance between piston
p a r t s for wear:
(40) and case (69), however, will re-
( a ) Power piston (40, figure
sult in excessive oil leakage within
t h e governor.