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Before each use:

 

1.

Inspect the cable for kinks and frays.  If kinked
or more than 3 wire strands are broken (small
wires) do not use the lift until the cable has
been replaced.

2.

Make certain winch operates freely and cable
is not tangled on the winch drum.

3.

Check forks, legs, and base for bends.

4.

Make sure caster wheels move freely.

5.

Make sure stabilizer legs slide freely into
mounting sockets and plunger  pins  lock legs
into position.

6.

Check to ensure that leveling screws turn eas-
ily.

Recommended Inspection Every 6 Months: 

1.

Inspect cable for frays and kinks (see point 1
above)

2.

Make certain winch works freely and that there
are no loose or damaged parts.

3.

Brake 

Inspections

4.

Manually raise and support each movable
mast section and carriage a minimum of 6”
above their lowest position.  Use a wooden
block with a rope attached to the bottom end to
quickly pull on rope to remove wooden block
support from mast sections being tested.
Brakes should engage before mast section
reaches bottom stop.  Use winch to crank up
mast sections to release the safety brakes.

Winch Maintenance: 

1.

Refer to the winch assembly drawings in this
Operators Manual.

2.

Be sure that both winch covers are on the
winch.

3.

Check ratchet dog and brake ratchet for wear.
If any wear is visible, replace the part.  If not,
lubricate the holes in both parts with a light oil.

4.

Inspect gear teeth for wear.  If there is no sign
of visible wear, brush teeth with 50-wt. Motor
oil.

5.

For proper brake adjustment see
“Troubleshooting” section on page 20.

Replacing the Cable:

 

1.

Lower the carriage to engage the safety latch.

2.

Remove the large gear cover from the winch

3.

Unwind the cable from the load drum, loosen
the set screw and remove the cable.

4.

Unbolt the cable from the top of the top mast.

5.

Cut the looped end off the old cable assembly,
using cable cutters or a cutting torch.

6.

Fusion weld the plain end of the new cable to
the cut end of the cable.  

Note:  The fused

joint must be straight and smooth or it will
not pass through the pulley assemblies
inside the unit.

7.

Use the winch to pull the old cable from the
winch side while feeding the new cable
through the carriage until the old cable is
completely out of the unit.  Cut the cables
apart approximately 2” from the weld on the
new cable and fuse the end of the new cable
to prevent unraveling.

8.

Bolt the new cable (looped end) to the top of
the top mast.

9.

Thread the plain end of the cable through the
drum into the roper keeper and tighten the set
screw.   

Note:  The cable must be fed from

the bottom of the winch between the winch
and the mast sections, over the drum and
into the slot on the wide plate.

10. Wind the slack cable tightly and evenly across

the load drum.

11. Replace the winch covers.

16 

MAINTENANCE INSTRUCTIONS 

old cable 

new cable 

Trim all loose strands before pulling cable 
through unit.  Make sure that welded area is not 
too bulky to pass between the rope guards and 
pulley wheels. 

Summary of Contents for SUMNER 784760

Page 1: ...nson Rd Houston TX 77088 p 281 999 6900 f 281 999 6966 CANADA 75 Saltsman Drive Unit 5 Cambridge Ontario N3H 4R7 p 519 653 5300 f 519 653 5305 NETHERLANDS Midden Engweg 21NL 3882TS Putten Netherlands...

Page 2: ...ntenance Instructions 16 17 Maintenance Record 18 Troubleshooting 19 20 2 OWNER S RESPONSIBILITIES Throughout this publication the words WARNING CAUTION and IMPORTANT will be used to alert the user to...

Page 3: ...und the winch drum 1 INSPECT THE EQUIPMENT If cable is kinked worn frayed damaged or has anything on it that would obstruct its rotation around the pulley wheels do not use the unit Use only Sumner Ma...

Page 4: ...ENT continued Avoid horseplay around equipment and keep bystanders at a safe distance Do not allow children to operate this unit and always keep them out of work areas Operate from the proper position...

Page 5: ...TEM UNLESS MAST ASSEMBLY IS IN THE LOWEST POSSIBLE POSITION TO ENGAGE THE CARRIAGE SAFETY LATCH Keep load at lowest possible position at all times 1 INSPECT THE EQUIPMENT continued 2 WORK AREA HAZARDS...

Page 6: ...obstructed movement of the unit Never leave elevated load unattended Do not use unit to support ladders for climbing hoisting or people moving Do not use unit outside in thunder light ning or severe w...

Page 7: ...ht lift upwards to a standing position while someone supports the unit from behind The unit is now ready to transport 3 Moving Lift in Work Area With Load Although it is best to move the unit to the j...

Page 8: ...balanced Note load capacity at given centers below Make sure the stabilizer legs are in stalled and locked into position 4 Reversing the Forks Disengage 2 spring loaded pins Rotate fork assembly 180 d...

Page 9: ...lower masts by turning winch crank counter clockwise Lock caster brakes when leaving unit unattended 6 Storing Forks Using two hands pull out on the two spring loaded rings located above the fork arms...

Page 10: ...nt of the lift Insert each leg into its respective mount ing socket making sure that the locking plunger fully engages Using the leveling screws level the lift un til the bulls eye bubble level shows...

Page 11: ...Hold Down from Safety Latch Loop on side of fork Operating Your Lift When operating the lift the Safety Latch can be looped onto itself for out of the way storage Resetting Safety Latch In the event...

Page 12: ...t Pull the tool down and the brake will release It may be necessary to push the locked mast or Carriage up slightly while pulling down on the tool Once the brake is released maintain pressure on the t...

Page 13: ...0 400 500 600 12 15 17 20 23 D istance frombackof fork in M axim um S afe Loa d LOAD CENTER 12in 15in 17in 20in 23in 30cm 38cm 43cm 51cm 58cm MAXIMUM CAPACITY 500lbs 400lbs 350lbs 300lbs 260lbs 227kg...

Page 14: ...forks up 16 11 5 15 m Height forks down 15 11 4 85 m Height Boom 16 6 5 03 m Fork ground clearance 3 75 9 5 cm Fork load height 5 75 14 6 cm Load capacity 12 load center 500 lb 225 kg Lift weight 279...

Page 15: ...15 Assembly Diagram Masts Carriage Assembly Leg Storage Rack Winch Assembly Handle Front Stabilizer Leg Mast Brace 8 inch wheels Fork Assembly Rear Stabilizer Leg Bubble Level Leveling Screw Base...

Page 16: ...teeth for wear If there is no sign of visible wear brush teeth with 50 wt Motor oil 5 For proper brake adjustment see Troubleshooting section on page 20 Replacing the Cable 1 Lower the carriage to en...

Page 17: ...ched to the lift 14 Check the safety brake operation Safety Brake Maintenance The safety brake will automatically engage when the unit is horizontal preventing disassembly of the mast sections When th...

Page 18: ..._____________________________________________ Action Date _____________________________________________________________________ Action Date ____________________________________________________________...

Page 19: ...r wheels are not rotating If wheels and mounting hardware are not damaged clean wheels and lubricate shoulder bolt If the wheels do not rotate freely replace roller wheel assembly Inspect mast section...

Page 20: ...will not disengage See illustration and instructions below The idler gear is displaced Make sure that the idler rotates freely and the teeth on the idler gear are not worn Safety brake will not relea...

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