Note. If shaft bore is scored 1/3 of circumference
the idle and maximum or high-speed springs, plungers,
or more in cover or housing, scrap part. If scored less
adjusting screw and shims. The springs control engine
than 1/3 clean up and reuse pat.
speed and adjustments are made by the shims or
(1) Lubricate and slide shafts and gears into
cover. Make sure parts are clean.
c. Disassembly of Automotive Governor.
(2) Position new gasket (8) and install
(1) Remove capscrews (16 and 17, fig. 3-
housing to cover. Aline locating notches together (fig. 3-
31, lockwashers (19), and flatwashers (20) securing
governor spring pack cover (1) to main housing.
Location of notches determine pump
(3) Secure cover to housing with dowels,
(3) Remove snap ring (12) which holds
governor spring pack in sleeve, with a pair of snap ring
turns freely with finger pressure.
(4) Remove governor spring (3), spring
Note. Total gear backlash must b 0.001/0.004
retainer (11) and shims (2) from spring pack cover (1).
inch. The drive shaft must protrude 2 370/2 412 inch
(5) Remove idle spring plunger guide (7),
from the housing End clear mace should not exceed
idle spring (9, or springs, idle spring plunger (5, , and
0.0015 inch nor be less than 0.0009 inch.
d. Disassembly of Mechanical Variable Speed
Caution: If pump binds or has excessive play,
check for error in assembly which must be corrected
(1) Remove filter screen assembly (fig. 3-
to prevent early pump failure.
up of cap, cap seal, spring, upper
and lower filter screen, O-ring, and O-ring retainer (fig. 3-
Remove capscrews and washers
securing MVS governor to main housing.
governor and discard O-ring packing.
Figure 3-61. Locating notches.
Spring pack cover
Governor spring shim
Idle spring plunger adapter
Idle spring plunger
Idle adjusting screw clip
Screw, idle adjusting
Washer, adjusting screw
Seal wire (2)
Capscrew, spring pack cover
Capscrew, spring pack cover (3)
Spring pack cover gasket
Lockwasher, spring pack cover (4)
Washer, plain, spring pack cover (4)
Figure 3-62. Gear pump capscrews torque.
Figure 3-63. Automotive governor - exploded view.
3-9. Governor Spring Pack
a. General. The governor spring pack consists of