Advertisement
5.1.
MONTHLY MAINTENANCE
Lubrication is critical to jacks. Any restriction due to dirt or rust can cause either slow or extremely
rapid jack movement, causing damage to the internal components. To keep the jack well
lubricated, carry out the following steps.
5.1.1. Lubricate the ram, the linkages and the saddle and pump mechanism with light oil.
5.1.2. Grease the wheel bearings and axles.
5.1.3. Keep all jack surfaces and warning labels clean.
5.1.4. Check and maintain the ram oil level.
5.2.
THREE MONTHLY MAINTENANCE
5.2.1. At three monthly intervals, check the ram for any signs of rust or corrosion. Clean the ram as
required and wipe with an oiled cloth.
5.3.
CHECKING THE OIL LEVEL
5.3.1. Fully retract the ram by turning the release valve counter-clockwise.
5.3.2. With the jack in the level position, remove the oil filler plug found under the removable magnetic wheel nut retention tray (fig.3).
5.3.3. The oil should be level with the bottom of the oil filler hole. If it is not, top up with clean hydraulic jack oil.
5.3.4. Replace the oil filler plug and check the jack operation.
5.3.5. Purge air from the hydraulic unit as required.
NOTE: Always store the jack in the fully lowered position. This will protect critical areas from excessive corrosion.
Owing to their size and weight, hydraulic products should ideally be repaired by local service agents. We have service /repair agents in most
parts of the UK. Before returning your product please call our technical helpline on 01284 757505 for advice and troubleshooting guidance. If
the jack is under guarantee please contact your stockist.
6.
TROUBLESHOOTING
PROBLEM
Jack will not lift the load
Jack does not lift high enough
Or feels "spongy"
Jack lifts poorly
Jack lifts but will not hold load
Jack will not lower completely
Jack does not lower at all
© Jack Sealey Limited
POSSIBLE CAUSE
1) Overloaded
2) Oil level low
3) Release valve not correctly closed
4) Air in system
5) Piston rod not functioning
6) Packing worn or defective
1) Oil level too high or too low
2) Worn seals
3) Air in system
4) Release valve not closed
1) Pump packing or valves malfunctioning
2) Oil is dirty
3) Air in the system
1) Release valve partially open
2) Dirt on valve seats
3) Air in system
4) Faulty seals
5) Packing worn or defective
1) Unit requires lubrication
2) Piston rod bent or damaged
3) Jack frame/link system distorted due to
overloading/poor positioning
4) Air in system
5) Release valve partially closed
6) Jack spring damaged or unhooked.
1) Release valve closed
Original Language Version
REMEDY
1) Be sure to use jack with adequate
capacity
2) Top up oil level
3) Check and close release valve
4) Open release valve and pump the
handle a few times. Close valve and re-try
5) Clean and replace oil
6) Replace packing
1) Fill or remove excess oil
2) Return jack to local service agent
3) Open release valve and pump the
handle a few times. Close valve and re-try
4) Check and close release valve
1) Replace packing and/or clean valves
2) Replace oil
3) Open release valve and pump the
handle a few times. Close valve and re-try
1) Check and close release valve
2) Lower jack, close release valve. Place
foot on front wheel and pull up lifting arm
to it's full height by hand. Open the release
valve to lower arm
3) Open release valve and pump the
handle a few times. Close valve and re-try
4) Replace packing or contact local
service agent
5) Replace packing
1) Oil all external moving parts
2) Replace rod or contact local service
agent
3) Replace damaged parts or contact local
service agent
4) Open release valve and pump the
handle a few times. Close valve and re-try
5) Check and fully open release valve
6) Replace spring or contact local service
agent
1) Check and fully open release valve
4040TB.V1
Issue 4 (H,1,4,5,)
FIG.3
15/09/23
Advertisement
