Troubleshooting Information; Electrical System - Skyjack SJIII 3220 Operating & Maintenance Manual

TROUBLESHOOTING INFORMATION

The following pages contain a Table of Troubleshooting information for locating and correcting most
service trouble which can develop. Careful inspection and accurate analysis of the systems listed in the
Table of Troubleshooting Information will localize the trouble more quickly than any other method. This
manual cannot cover all possible troubles and deficiencies that may occur. If a specific trouble is not
listed, isolate the major component in which the trouble occurs, isolate whether the problem is electrical or
hydraulic, and then isolate and correct the specific problem.
TROUBLESHOOTING INFORMATION
TROUBLE
ALL CONTROLS
INOPERATIVE
SJIII Series - The CONVENTIONALS
toc 1 2 3
SECTION 4
PROBABLE CAUSE

ELECTRICAL SYSTEM

1. Battery Charger plugged into external
power source.
2. Batteries disconnected.
3. Dirty or loose battery terminals.
4. Battery charge low.
5. Main battery cables open or defective.
6. Fuse (F1) defective.
7. Main Battery Disconnect Switch (S1)
open or defective.
8. Loose or broken wire #3 from Motor
Contactor (C1) to Circuit Breaker
(CB2).
9. Defective Battery Charger Relay
(L1CR).
10. Loose or broken wire #03A from
Battery Charger Relay (L1CR) to
Circuit Breaker (CB2).
11. Defective or tripped Circuit Breaker
(CB2).
12. Loose or broken wire #7 from Charger
Relay (L1CR) to Base Terminal Block
(TB-1).
13. Loose or broken wire #00 from Pump
Motor (DCM1) to Circuit Breaker (CB1).
14. Defective or tripped Circuit Breaker
(CB1).
15. Loose or broken wire #2 from Circuit
Breaker (CB1) to Base Terminal Block
(TB-1).
16. Loose or broken wire #19 from Base
Terminal Block (TB-1) to Contactor
(C1).
17. Loose or broken wire #2 from Contactor
(C1) to Base Terminal Block (TB-1).
18. Contactor (C1) defective.
19. Defective Pump Motor (DCM1).
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Complete Revision 99-05-01
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REMEDY
1. Disconnect charger cord.
2. Connect batteries.
3. Clean and tighten connections.
4. Check each cell with hydrometer.
Reading should be 1.275 (fully
charged). Recharge if low reading.
Replace if reading difference
between cells is 0.050.
5. Check continuity.
defective.
6. Replace fuse.
7. Close switch. Check continuity.
Replace if defective.
8. Check continuity. Replace if defective
9. Check relay. Replace if defective.
10. Check continuity.
defective.
11. Reset circuit breaker. Replace if
defective.
12. Check continuity.
defective.
13. Check continuity. Replace if
defective.
14. Reset circuit breaker. Replace if
defective.
15. Check continuity.
defective.
16. Check continuity.
defective.
17. Check continuity.
defective.
18. Check contactor.
defective.
19. Check motor. Replace if defective.
SECTION 4, Page 1
Replace if
4
Replace if
Replace if
Replace if
Replace if
Replace if
Replace if