P-9-TM-457-35
T.O. 35C2-3-442-2
TM-07464A-35
TM 5-6115-457-34
2, Clean plugged oil holes in shaft
8-138.
REPAIR
(29) using a small piece of wire. Do not
attempt to redrill holes.
a. UTILITY GOVERNOR.
1. Most of the repair work consists
8-139.
REASSEMBLY
of cleaning and polishing of parts. Use
a. UTILITY GOVERNOR, Refer to
No. 320 to 500 fine grit emery cloth for
polishing. All pistons should move freely
assembly in the reverse order of index
without binding or catching; excessive
numbers assigned. Pay particular attention
clearance between mating parts, however,
to the following:
will result in excessive leakage of pressure
oil within the governor.
1. Drive dowel pins (60) out of base
2. Be extremely careful when
(62).
polishing pilot valve (49, figure 8-33)
2. If necessary to install new bush-
control land. Leave the corners sharp;
ings (67 and 68), insert a suitable support
broken or rounded corners on this land will
plate of exactly the correct width between
ruin the pilot valve.
the inner walls of the case (69). Press
3. If ground bottom surface of the
bushings (67 and 08) in with arbor press to
case (69) is grooved or worn from rotation
dimensions shown in figure 8-35. Press in
idler gear stud (66) to depth shown in
of the pump gears (58 and 59), or scratched
from mishandling, it may be surface ground.
Up to 1/32 inch may be removed. Lap the
3. After installing bushings (67 and
surf ace smooth on a flat plate if a surface
grinder is not available.
68, figure 8-33), line size or line ream
with standard 3/8 inch diameter line
reamer.
CAUTION
Do not remove more stock than
4. Place pump gears (58 and 59) in
necessary to clean up.
gear pockets of base (62).
4. If the ground, flat surface of the
CAUTION
base (62) is warped, nicked, or deeply
Do not use adhesive on surface of
scratched, it may be lapped smooth on a
base (62).
flat plate. If the depth of the gear pockets
is reduced, the gears will bind; in this
event, the faces of the gears (58 and 59)
5. Coat surface of base (62) with
must be lapped to provide clearance,
engine oil (precise generator sets only).
6. Place gasket (61) in groove of
b. GOVERNOR DRIVE HOUSING.
base (62).
1. Repair gear (20 and 23, figure
7. Place case (69) on base (62), in-
8-34) teeth that have small nicks with a
vert, and put the bushing assembly (54) in
fine hone.
8-80
