Chevrolet 1973 Overhaul Manual page 380

Fig. 48T-A--Checking Valve Opening With Weights
Outward
with governor weights completely inward (fig. 48T-
B).
Governor Driven Gear Replacement
To facilitate governor repair in the field, a governor
driven gear and replacement pins are available for
service use. The service package contains a nylon driven
Fig. 48T-B-Checking Valve Opening With Weight
/
Inward
A U T O M A T IC T R A N S M IS S IO N
gear, two governor weight retaining pins and one
governor gear retainer split pin. Replacement of gear
must be performed with care in the following manner:
1. Drive out governor gear retaining split pin using
small punch (fig. 49T).
2. Support governor on 7/64 inch plates installed in
exhaust slots of governor sleeve, place in arbor
press, and with a long punch, press gear out of
sleeve.
3. Carefully clean governor sleeve of chips that
remain from original gear installation.
4. Support governor on 7/64 inch plates installed in
exhaust slots of sleeve, position new gear in sleeve
and, with a suitable socket, press gear into sleeve
until nearly seated. Carefully remove any chips that
may have shaved off gear hub and press gear in
until it bottoms on shoulder.
5. A new pin hole must be drilled through sleeve and
gear. Locate hole position 90 degrees from existing
hole, center punch and then, while supporting
governor in press, drill new hole through sleeve and
gear using a standard (1/8 inch) drill.
6. Install split retaining pin.
7. Wash governor assembly thoroughly to remove any
chips that may have collected.
Assembly
1. Install governor valve in bore of governor sleeve,
large end first.
2. Install governor weights and springs, and thrust cap
on governor sleeve.
3. Align pin holes in thrust cap, governor weight
Fig. 49T~Rem oving Governor Gear R etaining Pin
7A-77
OVERHAUL MANUAL