d.
Inspection. Check the components for wear limits as specified in table 4-9.
Table 4-9. Repair and Rebuild Standards for
Hydraulic Pump Assembly
Wire Limits
Refer-
Direct &
Figure
ence
Point
Size and Fit
General
Number
Letter
Measurement
of New Parts
Support
Depot
(∗)
A
2.5000 to 2.5005
2.499
(∗)
4-9
B
OD of gear shaft
0.9990 to 0.9995
0.9980
(∗)
4-9
C
Thickness of wear plate (after
0.248 to 0.250
0.246
grinding)
(∗)
(∗)
4-9
D
OD of bearing
1.6870 to 1.6875
(∗)
(∗)
4-9
E
ID of bearing
1.0000 to 1.0005
(∗)
(∗)
4-9
B-E
Fit of shaft in bearing
0.0005L to 0.0015L
(∗)
(∗)
4-9
F
ID of recess in bearing
1.6865 to 1.6870
(∗)
(∗)
4-9
D-F
Fit of bearing in recess
0.000 to 0.001T
and aline carefully with the bore.
f. Assembly. During assembly, replace packing,
(2) Press the bearing into the bore until firmly
seal, and/or all worn or all worn or damaged parts. To
seated.
assemble the hydraulic pump assembly, refer to figure
(3) Install wear plate (6) removed from the end
cover (15) on the drive gear shaft.
Note. There are f our bearing to be installed. All
Note. Wear plate can be identified and properly
but the drive gear bearing 4) in the end cover 5 are
installed by noting the dye marks made during
installed in the same manner .
disassembly.
(1)
Place one bearing 4) at top of each bore
4-19