TM 9-2590-209--14&P
Table 6-2. Repair Standards for Hydraulic Pump Assembly
Ref-
Figure
erence
Points of
Size and Pit
Number
Letter
Measurements
of New Parts
Wear Limits
A
Thickness of wear plate
0.248 to 0.250
0.246
B
Width of gears
2.5000 to 2.5005
2.499
C
OD of gear shaft
0.9990 to 0.9995
0.9980
D
OD of bearing
1.6870 to 1.6875
(e)
E
ID of bearings
1.0000 to 1.0005
(e)
C-E
Fit of shaft in bearing
0.0005L to 0.00015L
(e)
D-F
Fit of bearing in recess
0.000 to 0.OO1T
(e)
NOTE: An asterisk (*) indicates a replacement part only.
g. Install
snapring
(3)
securing
bearing
on
6-7.
Assembly (Fig 6-5).
gearshaft.
a. During assembly, replace with new preformed
h. Install seal (14) and oil seal (2) on gearshaft with
packing, seals, and all worn or damaged parts.
tipad surface of seal facing up.
b. There are four bearings to be installed. All
i. Turn end cover (15) with small opening down,
except the drive gear bearing (4) in the end cover (15)
and install gearshaft (8) into its bore in end cover, and
are installed in the same manner.
secure with snapring (1).
c. Place one bearing (4) at top of each bore, and
j. Position gear (13) so that it will mate with
align carefully with bore.
gearshaft (8) in accordance with dye marks made during
disassembly, and insert gear into its bore in end cover.
d. Press bearing into bore until firmly seated.
k. Place preformed packing (5) on machined
e. Install wear plate (6), removed from end cover
surface of end cover (15).
(15) on drive gear shaft.
l. Lower housing (12) into end cover, position it in
accordance with punch marks made during disassembly.
NOTE
Locate housing over the dowel pins in cover and seat
firmly.
Wear plate can be identified and
properly installed by noting dye marks
made during disassembly.
f. Install remaining bearing (4) on gear shaft.
6-7
