27
HGF Series Service Procedure
Figure 70
Figure 69
Figure 68
Figure 67
Place one piece of .007 inch (.18
mm) shim stock approximately .5 inch
(13 mm) wide x 1.5 inch (38 mm) long
between the metering ring and drive
plate in three places approximately
equal distance around the outside
diameter of the drive plate. Place
another piece of the .007 inch (.18
mm) shim stock between the drive
plate and each of the three pieces of
shim stock already in place. Lift the
metering ring and metering package
and remove the wood block. Push
the metering package and shims into
the metering ring until the drive plate
and shims are at least flush with the
metering ring. See FIGURE 67.
Tighten hex socket
head cap screws
20. Reverse the metering ring (17)
and metering package as a unit on
the flat surface. Push down on the
metering package until the drive
plate is on the flat surface. Be
sure the cap screws (18) are loose
enough to allow the commutator
ring (21) and drive plate (26) to
align themselves concentrically in
the metering ring bore. Gradually
tighten the eleven cap screws,
following the sequence shown in
FIGURE 70, at least twice until a
final torque of 11-13 inch pounds
(1.24 to 1.47 N m) is reached.)
See FIGURES 68 and 69.
Remove the metering package
and shims from the metering ring.
Discard the shims.
21. Inser t large tang of the dr ive link
(16) into the slot in the rotor (24).
See FIGURE 70.
Install drive link
CAUTION: An incorrect (reversed)
assembly of the drive link will
prohibit the assembly of the hex
drive (10) in step 35.
CAUTION
WARNING: USE CARE AND EYE
PROTECTION WHILE ADDING AND
REMOVING SHIMS FROM
METERING RING AS THE SHIMS
WILL BE UNDER SPRING TENSION
AND COULD FLY INTO THE AIR
CAUSING INJURY.
WARNING
