TM 5-3805-262-20
3-25. HYDRAULIC SYSTEM TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. LIFT CYLINDER ASSEMBLIES OPERATING SLUGGISHLY OR POORLY (ALL OTHER CYLINDERS
OPERATING OKAY ) (Cont).
Step 2.
Start engine and turn loader so that it is facing straight ahead.
Shut off engine and engage transport/service link (page 9-8).
Start engine and operate at idle speed.
Operate LIFT ARM control lever in both RAISE and LOWER positions.
B e f o r e p e r f o r m i n g f o l l o w i n g , b e s u r e t h a t t r a n s p o r t / s e r v i c e l i n k i s
e n g a g e d . F a i l u r e t o d o s o c o u l d c a u s e s e r i o u s i n j u r y o r d e a t h d u e to
chassis pivoting and crushing you when you are working in area between
front and rear chassis.
Tell assistant to check hoses, lines, and fittings between control
valve and lift cylinder assemblies for hydraulic oil leakage,
Shut off engine.
a . I f h y d r a u l i c o i l l e a k a g e i s s e e n , t i g h t e n h o s e f i t t i n g s . I f
tightening does not stop leakage, replace part(s) (page 11-50).
b. If hydraulic oil leakage is not seen, go to step 3 below.
Step 3.
Inspect lift cylinder assemblies (page 11-64).
a . I f l i f t c y l i n d e r a s s e m b l i e s a r e l e a k i n g , r e p l a c e ( p a g e 1 1 - 6 5 ).
b. If lift cylinder assemblies are not leaking, go to step 4 below.
Step 4.
Start engine and operate at idle speed.
Place LIFT ARM control lever in RAISE position until bucket is at
maximum height then place lever in NEUT. position.
Shut off engine.
3-189
