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T.O. 35A2-2-77-1
TM 55-1730-222-12
Table 4-5. Pump Assembly Detail Inspection (See figure 5-2.) (Sheet 2 of 2)
Procedure
Test/Check
Part
Index No.
I
Examine for grooved or scored ID.
Pump body
10
Visual
Refer to table 4-7.
Excessive wear
I
Examine for cracks and deformation; and for
14
Visual
Spring
free length of 3/8 inch,
Compression rate
Test for compression to 1/4 inch height under
30-pound load.
Examine for flat spots; and for scratches,
Balls
15,18,25
Visual
nicks, and grooves.
Examine for cracks and deformation; and for
17
Visual
Spring
free length of 1/2 inch.
Examine ball seats for scratches, nicks,
19
Visual
Valve body
grooves, and deformation.
"Examine for cracks and deformation; and for
27
Visual
Spring
free length of 1-1/2 inch.
Examine for raveled, broken wire mesh; and
Oil screen
28
Visual
for deformation, especially at flange end.
Examine for out-of-round holes; and for
Pump block
29
Visual
scratched, nicked, grooved or deformed seat
for release valve ball (25).
Table 4-6. Hydraulic Lift Detail Wear Limits (See figure 5-1. )
Dimension
Limits (in.)
Min
Part Name and Index No.
Dimension Measured
Max
-----
2.248
Bushing (8)
ID
-----
2.233
Major OD
Ram (9)
,
-----
Ram (15)
Major OD
2.988
-----
Wear surface ID
2.398
-----
Cylinder (18)
Wear surface ID
3.148
Table 4-7. Pump Assembly Wear Limits (See figure 5-2. )
Dimension Limits (in. )
Max
Min
Dimension Measured
Part Name and Index No.
-----
Piston (7)
Minor OD
0.680
-----
Pump body (10)
Wear surface ID
0.695
4-7

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