TM 5-3825-225-14&P
1-53. IDLER GEAR AND HUB.
a.
Number of Teeth ....................................... ................................................. .................................. 57
b.
Inside Diameter of Gear Boss ................................... ............. 1.718-1.7197 in. (43.637-43.680 mm)
c.
Inside Diameter of Gear Boss With Bushing Fitted ...... ........ 1.5625-1.5641 in. (39.688-39.728 mm)
d.
Outside Diameter of Gear Hub .............................. ............. . 1.5612-1.5619 in. (39.654-39.672 mm)
e.
Running Clearance of Gear on Hub ................................... ........0.0003-0.0016 in. (0.008-0.041 mm)
f
Idler Gear Width .......................................... ...................... .. 1.3105-1.3115 in. (33.287-33.312 mm)
g.
Hub Width ............................................... .......................... .. 1.3165-1.3185 in. (33.439-33.490 mm)
h.
Idler Gear End Float ................................ .......................... ............0.003-0.008 in. (0.076-0.203 mm)
1-54. CRANKSHAFT GEAR.
a.
Number of Teeth ......................................... ..................................................... ..............................24
b. Inside Diameter of Gear ............................... .................. ....... 1.250-1.2512 in. (31.750-31.780 mm)
c.
Crankshaft Diameter for Gear ................................... ..... ...... 1.250-1.2512 in. (31.750-31.780 mm)
d.
Transition Fit of Gear on Crankshaft ........................... ...............0.0006-0.0012 in. (0.015-0.030 mm)
1-55. TIMING GEAR BACKLASH.
Between Crankshaft/Idler and Camshaft/Idler Gear ....................0.0015A-0.0025 in. (0.038-0.064 mm)
1-56. LUBRICATION SYSTEM.
a.
Lubricating Oil Pressure At Maximum Engine Speed
and Normal Working Temperature .............................. ..................................30-60 psi (207-414 kPa)
b.
Crankcase Capacity .................................................... ................................................... 6 qt (5.7 1)
c.
Crankcase Capacity with Filter .................................... ..................................................... 7 qt (6.61)
1-57. LUBRICATION OIL PUMP.
a.
Type ............................ .................................................................................................... Rotor Type
b.
Number of Lobes (Inner Rotor) ....................................... ............................................ Th ree or Four
c.
Number of Lobes (Outer Rotor) ..................................................................................... Four or Five
d.
Method of Drive ............................ ............................. .................... Spiral Gears From the Camshaft
1-58. OIL PUMP CLEARANCES.
a
Inner Rotor to Outer Rotor ..................................... ....................0.0005-0.0025 in. (0.013-0.064 mm)
b.
Outer Rotor to Pump Body ................ ................................................0.011-0.013 in. (0.28-0.33 mm)
c. Inner Rotor End Clearance ...................................... ..................0.0015-0.0030 in. (0.038-0.076 mm)
d. Outer Rotor End Clearance ......................... ................... ...........0.0005-0.0025 in. (0.013-0.064 mm)
e. Inside Diameter of Bore for Pump Shaft .................... ................0.500-0.501 in. (12.700-12.725 mm)
f
Outside Diameter of Pump Shaft .................................. .........0.4983-0.4986 in. (12.657-12.664 mm)
g.
Running Clearance, Shaft in Bore .................... .............. ...........0.0014-0.0027 in. (0.036-0.069 mm)
1-13
