Troubleshooting - Viking 53350E Owner's Manual

6.4.4 Fill oil to no less than 13 mm from the top of the tank to the oil surface level.
Replace the oil filler plug and purge air from the hydraulic unit as required. Refer to Section 4.
6.4.5
6.4.6 Replace the top plate, ensuring the four retaining screws line up as shown in the following picture,
and tighten the four screws.

TROUBLESHOOTING

Jack will not lift to full height
Jack will not hold the load
Lift arm will not lower
After hydraulic purging, the jack still
can't reach the maximum by seven pumps
Poor lift performance
8
PROBLEM CAUSE
1. Oil level low
2. Release valve not closing
1. Release valve not closing
2. Hydraulic oil is contaminated
3. Pump leaking
1. Pump cylinder binding
2. Parts worn
3. Internal component damage
4. Return spring broken or unhooked
5. Lift arm linkage either bent or binding
6. Air in the hydraulic system
1. Still have air in the hydraulic system
1. Fluid level low
2. Hydraulic unit malfunction
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REMEDY
1. Check / add oil
2. Close the release valve
1. Close the release valve
2. Contact authorized
service agent
1. Contact authorized
service agent
1. Purge air according to
manual Part 4.5
1. Ensure proper fluid level
2. Discontinue use, contact
authorized service agent