Teledyne Continental Motors, Inc.
TM
Engine
Description
2-3.1. Accessory Drive Ratios
Table 2-2.
Accessory Drive Ratios, Rotation, Speed, Torque & Moments
Accessory
Direction
of
Rotation (1)
Drive Ratio to
Crankshaft
Maximum
Torque, in·lb
Cont. Static
Maximum
Overhang
Moment, in·lbs
Tachometer CW,
OPT
0.5:1
7
50
25
Starter Motor
CCW
24.727:1
50
--
--
Fuel Pump
CCW
1:1
40
800
--
Alternator (Gear Driven)
CCW
2.035:1
30
100
100
Alternator (Belt Driven)
CCW
3.333:1
30
100
100
Vacuum Pump (2)
CW
1:1
25
--
--
(1) CW= Clockwise Rotation, CCW=Counterclockwise Rotation, OPT= Optional. View is looking into drive.
(2) This drive is an AND20000 pad, modified for speed only
2-3.1.1. Accessory Drive Pad
The accessory drive pad is an AND20000 specification that has been modified for speed,
torque, and moment. The drive pad is provided with a cover in the event that its use is not
required. The drive pad does not incorporate an oil supply; only dry vacuum pumps may
be used.
2-3.2. Oil Specifications
WARNING
Do not use any engine oil other than those specified.
The commercially available ashless dispersant aviation oils listed in “Recommended
Ashless Dispersant Aviation Engine Oils” conform to TCM’s oil specifications. A list of
qualified lubricants is provided with the Engine Oil Servicing instructions in Chapter 6.
Do not use any other commercial quality oil.
Table 2-3.
Engine Oil Type Requirements
Recommended Grade of Ashless Dispersant Engine
Oil
Oil Type
Above 40
°
F (4
°
C), Ambient Air (Sea Level)
SAE 50 or Multi Viscosity
Below 40
°
F (4
°
C), Ambient Air (Sea Level)
SAE 30 or Multi Viscosity
IOF-240 Series Engine Maintenance Manual
2-23
31 August 2007
Change 1