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Inspection Procedure

Lift screw

Thoroughly wash the screw to remove all dirty oil. Inspect the 
outside diameter and top and bottom flanks of the thread for 
any signs of scoring or uneven wear.
Note: The major diameter may have small intermittent grooves 
in its outside diameter which are produced during manufacture.
Inspect the bottom sealing surface for damage where the oil 
seal runs. Polish out any small scratches with 400 grit emery 
paper.
Inspect the bearing areas and keyway for signs of wear.

Lift nut

Wash thoroughly to remove all oil. Inspect the flanks of the 
thread for signs of scoring or uneven wear. If scored, also check 
the lift screw and safety nut.

Inspect the thread minor diameter. When new, it is 2.0 mm thick. 
If it is worn to less than 0.5 mm thick, the nut must be replaced. 
Check that the trigger moves freely and the spring-loaded pin 
slides.

Safety nut

Wash the safety nut and brush to remove all oil. Inspect the 
flanks of the thread for signs of scoring or wear. Check the 
thread minor diameter. When new it is 1.5 mm thick. If it is worn 
to less than 1.0 mm thick, the nut must be replaced.

Carriage

Pull the top of the catch bar, at the back of the carriage, 10 
mm away from its stop and release it –it must return to its stop 
without sticking. Look through the hole in the catch bar pivot 
pin. The pin should not be deformed at all –if it is deformed, it 
must be replaced. Lubricate the pivot pin and spring guide.
Inspect the four plastic slide pads for wear. There should be no 
more than 1 mm wear on the pads. Check the M8 cap screws are 
tight. Remove and inspect the bearings in the carriage rollers. 
The bearings consist of a layer of bronze particles covered by 
a layer of teflon. If the bearing appears to be mostly bronze-
coloured, it requires replacement; if it is mostly grey/green 
coloured, it is still in good condition. Do not polish off the grey/
green colour on the roller pin unless the pin is scored. Polish 
only with 400 grit emery paper and replace the mating bearing 
at the same time.
Lightly grease the roller pin, bearing, roller slides and thrust 
washers when refitting. Make sure the circlips are fully seated in 
their grooves.

Bottom bearing

Pull the reservoir tube off  the bearing housing. Remove the 
O-ring, bearing and oil seal. Wash all parts thoroughly. Inspect 
the bearings for any signs of pitting or wear on the balls and 
raceways. Fit a new seal and O-ring. Repack the bearing with 
grease and refit. Wrap in plastic to keep clean.

Top bearing

Remove the cotter pin and remove the castle nut. Remove the 
pulley (or spacer) and the top plate assembly from the screw. 
Remove the bearing case from the top plate. Remove the ball 
bearing, spacer and inner race of the tapered roller bearing. 
Wash all parts thoroughly.
Inspect the bearing rollers and raceways for signs of pitting or 
wear. Inspect the domed end of the bearing cage and inside the 
top plate for signs of wear. Regrease the bearings and refit to the 
case. Grease the outside of the bearing case and fit it into the 
top plate.

To Re-assemble Column

1. Thoroughly clean the inside of the column where the rollers 
and sliders travel, then smear with grease.
2. Refit the carriage and position it about 500 mm up from the 
bottom.
3. Check the plastic key covers are still in place in the carriage.
4. Fit the lift nut on to the keys, with the trigger arm through the 
hole in the back of the carriage.
5. Fit the load ring between the lift nut and the carriage load bar.
6. Fit the safety nut on to the keys in the carriage, with the brush 
towards the front. Leave about a 6 mm gap between the lift and 
safety nuts.
7. Carefully fit the lift screw to the column and into the lift nut. 
Support the top of the screw on a spacer inside the column.
8. Wind the lift screw through the lift nut and safety nut. Check 
the gap between the nuts is 6 mm.
9. Fit the reservoir tube over the bottom end of the lift screw 
(square end first).
10. Put some masking tape over the thread and keyway on the 
28 mm diameter section. Liberally smear grease over the end 
of the screw and masking tape. Carefully fit the bottom bearing 
housing, seal first, over the end of the screw and past the 
keyway. Make sure the seal is not damaged by the keyway or the 
step in the shaft and that the seal spring stays in place.
11. Push the lift screw down through the bottom of the column. 
Put some loctite on the two cap screws and bolt the bottom 
bearing in place. Fit the reservoir tube on to the bearing 
housing, making sure it will clear the carriage when it is lowered.
12. Fit the chain key, sprocket and nyloc nut to the bottom of 
the screw.
13. Remove the spacer at the top of the lift screw and fit the top 
plate and bearing assembly. Fit and tighten the four M16 nuts.
14. Fit the pulley and key (or spacer) and fit the castle nut. Do 
the castle nut up until the chain sprocket is 6 mm away from the 
bottom of the columns. Fit the cotter pin.
15. Tighten the sprocket nyloc nut to 80 Nm torque, push the 
carriage down towards the bottom of the column and recheck 
the 6 mm gap between the sprocket and the columns.
16. Check the two belt pulleys are aligned, fit and tighten the 
vee belts to give less than 10 mm deflection when pressed 
firmly in mid-span with a thumb. Fit the drive cover.
17. Fit the lubricating brush to the front of the safety nut and 
adjust it so the bristles are just touching the bottom of the screw 
thread. Pour a trickle of extreme pressure gear oil along the 
length of the lift screw.
18. Refit the blind. Tighten the two top screws until the blind 
springs are fully compressed, then undo them one turn.
19. Measure the height of the carriages on both columns and 
adjust them to the same height.
20. The rest of the assembly can be done by following steps 7 
to 26 in the installation instructions, with the additional step 
of measuring the gap between the lift and safety nuts after 
installation is complete. If new nuts have been fitted, stamp the 
new initial nut gap on the front of the carriage.

Note: This hoist is fitted with a special safety interlock which 
renders the hoist inoperable should the lift nuts fail completely. 
The interlock is fitted to both columns and will stall the hoist 
approximately 300 mm off the ground.

Operation of the interlock can be checked using gauge G15-1-
51 according to its instructions.

Содержание TEC 3000X

Страница 1: ...Installation Operation and Maintenance instructions 3000X Screw Hoist...

Страница 2: ...ate the hoist and protect the operator should the electrics be damaged in any way In an emergency or when servicing turn the isolating switch to O and padlock it Do not directly spray or hose the hois...

Страница 3: ...um permissible gap between the base frame and shims is 0 5 mm 5 Drill and fit four hold down bolts The bolts must be 16 mm thread diameter and fitted in accordance with the manufacturer s instructions...

Страница 4: ...nd check the arm is locked 20 Fit the cover over the bottom limit switch and tee piece using two M6 x 10 mm long socket head cap screws Fit the motor cover over the vee belts and secure with the M4 x1...

Страница 5: ...5 Safety Interlock Mechanism Three Phase Electrical Circuit Single Phase Electrical Circuit...

Страница 6: ...ves 2 Check the vee belt tension Individual belt deflection must be less than 10 mm when pressed firmly in mid span with your thumb Every 3 months 1 Measure the gap between the lift and safety nuts in...

Страница 7: ...mn 1 Thoroughly clean the inside of the column where the rollers and sliders travel then smear with grease 2 Refit the carriage and position it about 500 mm up from the bottom 3 Check the plastic key...

Страница 8: ...earing incorrectly assembled a Bearing housing should be removed and bearing replaced 8 Interlock engaged a Lift nut worn out Replace as described under Major Service 3 Hoist runs but lacks power a Ho...

Страница 9: ...nd nuts Drive pulley a Clattering sound coming from drive cover 1 Grub screw retaining motor pulley is loose allowing play a Tighten grub screw using Allen key Base frame a Chain noise 1 Chain not run...

Страница 10: ...ing washer 4 24a V18663 Wire circlip 4 70a WWA1006 3 8 flat washer 4 24b V19268 Lift pad bush 4 71 SWA106 10 Screw 3 8 BSW x 1 1 4 L 6 25 V19274 Footguard spring 8 72 V18346 V18646 Motor mounting 1 25...

Страница 11: ...11...

Страница 12: ...back up safety interlock device will prevent further use of the hoist until the lift nut is replaced Daily Carry out a simple visual check to ensure the nuts have not completely closed up Every 3 mont...

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