Quantcast Figure 2-2. Trouble Shooting Chart (Cont)

 

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Figure 2-2. Trouble Shooting Chart
Up
TM-55-1730-221-12 10 Ton Hydraulic Aircraft Hand Jack Type A-6 Part No. 53D22004 Manual
Next
Section II: REPAIR INSTRUCTIONS
T.O.  35A2-2-39-11
T M 55-1730-221-12
REMEDY
PROBABLE CAUSE
TROUBLE
Remove screw (22). Adjust
By-pass valve improperly
Pump operates, and fluid
s c r e w (15) as outlined in para-
adjusted.
pressure fails to by-pass
graphs 3-11a through 3-11c.
at maximum ram extension
o r with overload applied.
Remove screw (22), screw
Defective by-pass spring (16)
( S e e figure 3-1.)
( 1 5 ) , spring (16) and ball (17).
o r ball (17).
I n s p e c t and replace spring (16)
or ball (17) if necessary. Ad-
j u s t screw (14) as outlined in
3-11c.
Loose retaining ring (34, 40,
Rams will not lower. (See
Remove rams (33, 39, 44).
4 5 ) lodged beneath rams (33,
Inspect and replace retaining
rings (34, 40, 45) if necessary.
39 or 44).
Excessively worn rams (33,
R e l i e v e load with another jack.
3 9 or 44) have jammed.
Remove, inspect and replace
rams (33, 39, or 44) if neces-
ary.
Figure 2-2. Trouble Shooting Chart (Continued)
2-4

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