Adjustment (Thru Aircraft Serials 17259737 And F17200804) - Cessna 1969-1976 172 Series Service Manual

connect the negative lead from the battery.
firewall.
Be sure that the connections for grounding the alter-
b. Remove the connector plug from the regulator.
c. Remove two screws holding the regulator on the
d. To replace the regulator, reverse the procedure.
(WARNING)
On models manufactured prior to mid 1971
should alternator thru -bolt loosening or
breaking occur, Cessna Service Letter
SE71-40 dated November 24, 1971 should
be complied with. On models manufactured
after
mid 1971
a
new high strength thru-
bolt and
a
K shaped retainer
are
installed.
Torque bolts 45 to 55 pound-inches.
1. Hose
2. Blast Tube Support
3. Clamp
4. Lock Washer
5. Screw
6. Support Strap
7 . Nut
8. Alternator Assembly
9. Gear Drive Assembly
10. Washer
Figure 16-3. Gear-Driven Alternator Installation
NOTE
On Aircraft 17260759 thru 17261130
and F17200870 thru F17200878,
F17200885, F17200886 and
earlier
172 and F172 models on which
Service Kit SK172-38 has been
installed, Single -engine Service
Letter SE72-33 Dated 10 November,
1972 should be complied with for
maximum alternator drive belt
adjustment.
1. Alternator
2. Locknut
3. Adjusting Bracket
4. Upper Adjusting Bolt
5. Mounting Bracket Bolt
6. Mounting Bracket
7.
Alternator Mounting Bolt
8. Drive Belt
9. Alternator Pulley Nut
10. Lower Adjusting Bolt
Figure 16-4. Belt-Driven Alternator Installation
Change
1
16-13