TM 5-4310-275-14
Section Ill. G E N E R A L
MAINTENANCE
5-6. General
tenance personnel. Refer to TM 5-2805-257-14 for
engine data.
This section contains maintenance data pertinent
to direct support and general support main-
5-7. Repair and Replacement Standards
Original
Wear
Item
Dimensions
Limits
First Stage Cylinder and Piston Assembly:
Ring to cylinder wall clearance. .. . . . . . . . . . . . . .
. . . 0.0003
0.0005
to
0.0005
Wrist pin hole . . . . . . . . . . . . . . . . . . . 0.3754
0.0005
to
0.3756
Wrist pin diameter . . . . . . . . . . . . . . . . 0.3751
0.0005
to
0.3756
Piston head clearance.. . . . . . . . . . .. . ...... . . . .... . . . . . . . .. . . . . .
0.021
to
0.026
Second Stage Cylinder and Piston Assembly:
Ring to cylinder wall clearance. . . . . . . . . . . . . . . . . . . . . . . . ... . 0.0002
to
0.0004
0.0005
Wrist pin hole . . . . . . . . . . . . . . . . . . . 0.4366
to
0.4368
0.0003
Wrist
pin
diameter
.
.
.
.
.
.
.
.
.
.
.
.
. 0.4364
to
0.4365
0.0005
Piston head clearance. . . . . . . . . ........... . . . . . . . . . . . . . . .
0.002
to
0.006
Poppet lift (nominal). . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . .. . 0.022
Exhaust valve lift. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 0.024
to 0.030
Third Stage Cylinder and Piston Assembly:
Ring to cylinder wall clearance. . . . . . . . . . . . . . . . . . . . . . . . . . .
0.00020
0.0002
to
0.00025
Wrist pin hole. . . . . . . . . . . . . . .. ....... . . . . . . ..,....,.......,.. 0.4366
to
0.4368
0.0003
Wrist pin diameter . . . . . . . . . . . . . . . . .. . . .... . . . . . ., . . . . . . . . . . . . . 0.4363
0.0005
to
0.4365
Piston head clearance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 0.002
to
0.006
Poppet lift (nominal). . . . . . . . . . . . . . . . . . . .. . . .... . 0.034
Exhaust valve lift. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.024
to 0.030
Compressor Connecting Links and Master Rod:
Connecting link wrist pin bearing hole. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 0.5615
0.0005
to 0.5620
Master rod connecting link hole. . . . . . . . . . . . . . . . . . . . . . . . 0.4366
0.0003
to. 0.4368
First stage wrist pin bearing hole. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 0.5590
to 0.5594
Endbell:
Shaft seal bore diameter. .. . . . . . . . . . . . . . . .. . . . . . . . . . . ..,,.. 1.499
to 1.500
Bearing bore diameter. .. . . .. .. . . . . . . . . . . . . . . . . . . . . 1.8502
to 1.8505
0.0002
Compressor Shaft:
Shaft seal diameter (fan end). . . . . . . . . . . . . . . . . . . . . . . . .
.... 0.934
0.001
to
0.940
Bearing diameter (fan end). . . . . . . . . . . . . . . . . . . .... . . . . . ... ,. 0,9842
0.0001
to
0.9845
Master rod journal diameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ...... 1.7711
0.0005
to
1.7717
Bearing diameter (opposite fan end). . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . ..
1.1809
0.0001
to
1.1811
Shaft seal diameter (opposite fan end). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 1.059
to
1.065
0.001
Oil Pump Piston:
Large spherical diameter. . . . . . . . . . . . . . . . . . . . . .. .. . . . . . . . . . . ... . . . .. . . . . . . . . . . . 0.5.595
0.0005
to 0.5605
Small spherical diameter. . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3790
0.0005
to 0.3795
Oil Pump Cylinder:
Inner diameter. . . . . . . . . . . . . . . . . . . . . . . . . . . ...... . . . . . . . . . . . . . 0.360
0.002
to 0.362
Section
V.
REMOVAL
AND
INSTALLATION
OF
MAJOR
COMPONENTS
AND
ASSEMBLIES
5-8. General
a. This section contains removal and in-
a. R e m o v a l .
stallation instructions for major components
(1) Remove the fuel tank (fig. 4-1).
which should be removed for repair functions.
(2) Refer to Figure 4-11 and remove the
b. Included in this section are the housing
housing sections.
sections, air pressure tank, air compressor,
b. Cleaning and Inspection.
engine, and the support stand assembly.
(1) Clean the housing sections with water.
