TM 9-4940-568-34
3-136
3-41. HOIST HYDRAULIC PRESSURE ADJUSTMENT
THIS TASK COVERS:
Adjustment
INITIAL SETUP
Tools
Tool Kit, General Mechanic’s
(Item 67, Appendix F)
Materials/Parts
Lockwasher (4) (Item 45, Appendix E)
Digital multimeter (Item 12, Appendix F)
Adjustment
NOTE
This procedure requires
operation of the crane with
power disconnected and
operated using manual control
levers. Refer to CRANE
EMERGENCY PROCEDURE
(TM 9-4940-568-10).
Adjustment should be performed
with crane in strongest position,
boom fully retracted and as high
a boom angle as can be
achieved.
(1) Unstow crane.
(2) Remove four screws (1), lockwashers
(2), washers (3) and cover (4) from valve
mounting
brackets (5). Discard
lockwashers.
(3) Remove protective cap (6) from test port
(7).
(4) Install pressure test meter (8) on test
port (7).
TEST
PORT
BAR SENSOR
(0–1000)
TEST
METER
1
2
3
8
4
6
7
5
