TM 5-3805-258-24-1
HYDRAULIC SYSTEM
T E S T I N G A N D A D J U S T I NG
8.
9.
10.
11.
12.
13.
Loosen the four jam nuts on sleeves (10), (11),
(12) and (13).
Start the engine and check the pressure on the
gauge. If the pressure on the gauge is not 0 kPa
(0 psi), loosen (turn counterclockwise) sleeve
(12) until the pressure is 0 kPa (0 psi).
Tighten (turn clockwise) sleeve (12) until the
pressure on the gauge is 300 ± 50 kPa (43 ± 7
psi).
Loosen (turn counterclockwise) sleeve (12) one
turn. The pressure on the gauge will go to 0 kPa
(0 psi). Tighten its jam nut to 30 ± 15 N.m (22
± 11 lb. ft.).
Stop the engine. Remove the pressure in the pilot
system and remove the test equipment.
Connect hose (6) to the pilot valve.
Dump Stem Adjustment
14. Disconnect hose (7).
15. Do Steps 6 through 12 again, only adjust sleeve
(13) this time.
16. Connect hose (7).
Lift
17.
18.
19.
Stem Adjustment
Disconnect hose (8).
Do Steps 6 through 12 again, only adjust sleeve
( 10) this time.
Connect hose (8).
Lower Stem Adjustment
20.
21.
22.
23.
Disconnect hose (9).
Do Steps 6 through 12 again, only adjust sleeve
(11) this time.
Connect hose (9).
Close the right hand platform and install three
bolts.
Cover Adjustment
24. Make sure that all four set screws (15) are even
(flush) with the top of actuators (14).
25. Install cover (4) on the lift and tilt pilot valve.
C R O S S S E C T I O N O F L I F T A N D L O W E R S T E MS
3. Plugs. 4. Cover. 10. Sleeve for lift stem. 11. Sleeve for
lower stem. 14. Actuators (two). 15. Set screws (four).
26.
27.
28.
Make sure that lever (5) for tilt control and
the lever for lift control are horizontal. Adjust
set screws (15) to remove free movement (play)
from the levers. Movement of these levers
must not be more than 0.13 mm (.005 in.)
when measured 38 mm (1.5 in.) from the cen-
ter of their shafts.
Install plugs (3) and connect rods (1) and (2) to
their levers.
Remove the air in the pilot system, see PROCE-
DURE TO REMOVE AIR FROM PILOT
SYSTEM.
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