 |
|||
|
|
|||
|
|
|||
| ||||||||||
|
|
 TM 5-2420-224-34
BACKHOE CONTROL VALVE, DIPPER AND BUCKET SECTION VALVES
R E P A I R (CONT)
13.
R E M O V E and DISCARD SEAL (27) and
PACKING (28).
COMPRESS SPRING (29) and REMOVE
14.
retaining RING (30).
S L O W L Y R E L E A S E S P R I N G (29) and
15.
REMOVE retainer (31), SPRING (29), and
retainer (32).
1.
Check secondary relief valve spring length.
Free length is 1.78 in. (45.3 mm); compressed
length is 1.51 in. (38.4 mm) at 137 16 lb
(627.25 kg).
2.
Check spool spring length. Free length is 2.27
in. (57.6 mm); compressed length is 0.87 in.
(22 mm) at 35 2.1 lb (15.9 1 kg).
I f either spring does not meet length
3.
requirements above, replace spring.
Procedure is the same for both
dipper section valve and bucket
section valve.
Apply coat of lubricating oil to
packings and seal prior to
assembly.
1.
I N S T A L L retainer (1), SPRING (2), and
retainer (3) on spool (4).
2.
C O M P R E S S SPRING (2) and INSTALL
retaining RING (5).
20-72
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals