SECTION 4, Page 17
SJ-600 Series Engine Powered
112715
June 2001
HYDRAULIC SYSTEM
TROUBLESHOOTING INFORMATION
TROUBLE
PROBABLE CAUSE
REMEDY
1. Check valve. Repair or replace if
defective.
2. Check valve. Repair or replace if
defective.
3. Check valve. Repair or replace if
defective.
4. Check valve. Repair or replace if
defective.
5. Check cylinder. Repair or replace if
defective.
1. Check valve. Repair or replace if
defective.
2. Check valve. Replace if defective.
3. Adjust valve. Replace if defective.
4. Check valve. Repair or replace if
defective.
5. Check valve. Repair or replace if
defective.
6. Check valve. Repair or replace if
defective.
7. Depress and turn manual override
clockwise to close. Replace if
defective.
8. Check valves. Repair or replace if
defective.
1. Check valve. Repair or replace if
defective.
2. Check valves. Repair or replace if
defective.
3. Clean or replace orifice.
1. Check pump. Repair or replace if
defective.
2. Adjust valve. Replace if defective.
3. Check valves. Repair or replace if
defective.
4. Check cylinder. Repair or replace
if defective.
1. Check valve. Repair or replace if
defective.
2. Adjust valve. Replace if defective.
3. Check valve. Repair or replace if
defective.
4. Check motor. Repair or replace if
defective.
BRAKES WILL NOT
RELEASE
1. Stuck or defective brake feed valve
(2H30A-2).
2. Stuck or defective brake dump valve
(2H30A-1).
3. Stuck or defective brake valve (2H25).
4. Stuck or defective auto reset valve
(V6).
5. Defective disc brake cylinder (C5)
1. Stuck or defective lift valve (2H14B).
2. Stuck check valve (CV3).
3. Misadjusted or defective lift relief valve
(R2).
4. Stuck or defective lowering valve
(2H13B).
5. Stuck or defective manual lowering
valve (V1).
6. Open or defective brake feed valve
(2H30A-2).
7. Open manual override on holding
valve (2H13B-1) or (2H13B-2).
8. Stuck holding valve (2H13B-1) or
(2H13B-2)
1. Stuck or defective lowering valve
(2H13B).
2. Stuck holding valve (2H13B1) or
(2H13B2).
3. Plugged lowering orifice (O1).
1. Defective powered extension pump
(P2).
2. Misadjusted or defective relief valve
(R5).
3. Stuck or defective deck extend valve
(4H26) or retract valve (4H27).
4. Defective powered extension cylinder
(C3).
1. Stuck or defective hydraulic
generator valve (2H85).
2. Misadjusted or defective flow control
valve (FC1).
3. Stuck or defective large pump dump
valve (2H17A).
4. Defective hydraulic generator
hydraulic motor (M2).
UP CIRCUIT
INOPERATIVE
DOWN CIRCUIT
INOPERATIVE
HYDRAULIC
GENERATOR
INOPERATIVE
POWERED EXTENSION
DECK INOPERATIVE
Содержание SJ-7027
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