TM 9-2320-211-20
Tabulated Data.
b.
valve-in-head
Valves . . . . . . . . . . . . . . .
6 (in-line)
Cylinders . . . . . . . . . . .
(1) Engine.
1-5-3-6-2-4
Firing order . . . . . . . . . .
Make:
Brake hp:
Models M40A1, M40A1C,
Mack ENDT-673
205 @ 2,100 rpm
M51A1, M52A1, M54A1,
Continental R6602
224 @ 2,800 rpm
M54A1C, M55A1, M61A1,
Continental LDS 465-1
M63A1, M63A1C, M139A1,
and 1A . . . . . . . . . . . .
175-180 @ 2,600 rpm
M139A1F, M246A1, M291A1,
M291A1C, M291A1D,
Compression ratio:
M328A1, M543A1, and
M748A1 . . . . . . . . . . . . . . . . . . Mack ENDT-673
16.50:1
Mack ENDT-673
Models M39, M40, M40C,
6.4:1
Continental R6602
M41, M51, M54, M55, M61,
Continental LDS465-1
M62, M63, M63C, M139,
22:0l
and 1A . . . . . . . . . . . .
M139C, M139D, M139F,
Compression pressure:
M246, and M543 Continental R6602
Models M40A2C, M51A2,
Mack
ENDT-673
575 psi @ 1,000 rpm
M52A2, M54A2, M54A2C,
Maximum torque:
M55A2, M61A2, M63A2,
M139A2F, M246A2, M291A2,
Mack ENDT-673:
M291A2C, M291A2D,
Gross
.
.
.
ft.-lb. @ 1,400-1,600
560
M328A2, M543A2, and
rpm.
M748A2
Continental
LDS
465-
Net . . . . . . . . . . . . . .
529
ft.-lb. @ 1,400-1,600
1/LDS
465-1A.
rpm.
Continental LDS 465-1 and 1A:
Type:
Gross . . . . . . . . . . . . . . . . . .425 ft-lb @ 2,000 rpm
Mack
ENDT-673
Diesel, t u r b o c h a r g e d ,
Governed speed:
watercooled.
Continental R6602
Gasoline, watercooled
Mack ENDT-673:
Continental LDS 465-1
No load . . . . . .
2,100-2,200 rpm
turbocharged,
and 1A . . . . . . . . . . . . . . . . . ..Multifuel
Continental R6602:
water cooled,
com-
No
load
.
.
..2,750-2,800
rpm
pression-ignition.
Continental LDS 465-1 and 1A
No
load
.
.
2.850-2,900
rpm
