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Page Title:
TSUM - 2-003 A-Frame Rotate (Deploy) (17) Part 3 |
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 TM 5-5420-279-23
TSUM - 2-003 A-Frame Rotate (Deploy) (17) Part 3
Part 3
All Maintainer Tasks
Is
Greater than 2900 psi
Zero
pressure gauge
(20000 kPa)
reading
Check A-Fram e pivots
Carry out Pum p Function
and operating
Less than 2900
check. See hydraulic
cylinders for evidence
psi (20000 kPa)
trouble shooting chapter 2
of m echanical
procedure 2-030
jam m ing or seizure
Support one cylinder and
disconnect cylinder rod end
Replace SV19 Valve Stack
from A-Fram e.
assem bly on A-fram e Rotate
Does
Operate A-Fram e rotate
Manifold . See hydraulic trouble
pum p function
Deploy button. Check that
shooting chapter 2 procedure
correctly
cylinder retracts sm oothly.
Yes
2-031 & Maintenance
Extend cylinder with A-Fram e
No
Procedure 5-120
rotate Park button and
reconnect cylinder
Replace SV19 Valve Stack
Replace pum p
assem bly on A-fram e Rotate
Repeat procedure
assem bly - see m aintenance
Manifold . See hydraulic trouble
with other cylinder
procedure 6-043, or use cross
shooting chapter 2 procedure
vehicle connection
2-031 & Maintenance Procedure
5-120
Replace faulty
Do
cylinder assem bly - see
both cylinders
No
m aintenance procedure
operate
5-077
sm oothly
Yes
Check A-Fram e
m echanically for evidence of
jam m ing or seizure, see -10
operator's m anual chapter 9
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