INSTRUCTION BOOKLET - Horner Shearing Books/Suregrip... · 2018-07-27 · cogs can just be turned with your thumb on the cogs. Too little tension causes ‘feathering’ which compromises

INSTRUCTION BOOKLET

HORNER - SUREGRIP INSTRUCTION MANUAL

CONTENTS

2

IntroductionThese instructions must be read by any person intending to use or maintain the handpiece.

Purpose of UseThis equipment is expressly designed and intended for the purpose of shearing sheep, goats and animals of the Camelidae family.

Contents

Safety Information

Comb & Cutter Set-up

Setting the Lead

Setting the Throw

Setting the Tension

General Maintenance

Attaching Handpiece to Driveshaft

Technical Drawing

Parts List

Troubleshooting

3

4, 5

5

6

7

8, 9, 10

11

12

13

14, 15


SAFETY INFORMATION

3

Safety Information

Improper use or incorrect set up of this sheep shearing handpiece can lead to serious injury.

It is advised that any person using this handpiece attend a sheep shearing training course to ensure correct usage of this handpiece.

Adequate protective clothing should be worn at all times whilst shearing.

You should be aware of sharp objects and moving parts, in particular the drive cogs and cutter.

The shearer should check the wool for any foreign objects before starting shearing.

Always disconnect the handpiece from the driveshaft when it is not in use. The handpiece should also be disconnected before carrying out any maintenance work and before fitting combs and cutters.

The handpiece should be used in a tidy, dry environment.


COMB AND CUTTER SET UP

4

Positioning Your Comb and Cutter Before you start, ensure the comb screws and tension knob are slack. Hold the handpiece so that you are looking at its under side and so you can clearly see both comb screws.

LONGHORN

NGHO

Place your comb in the handpiece so that the sharp side faces the forks and adjust the comb until the heel is level with the back edge of the comb screws.

DO NOT position the heel of the comb to the back of the comb bed.

Tighten the comb screws finger tight, holding the comb in place. Not too tight, you may need to adjust this further.



5

Setting the LeadAdjust the comb so that as the cutter travels over the comb’s central tooth, at least 1.5 mm of the comb tooth’s flat ground surface is clear of the cutter’s tip.

1.5mm

Central tooth

Turn over your handpiece and place your cutter onto the comb. The sharpened sides of both the comb and cutter should face each other. Locate the cutter onto the conical pins on the forks.

Secure the cutter by turning the tension knob clockwise. Apply enough tension to secure the cutter, but ensure that you can still move the forks from side to side using the drive cogs located towards the back of the handpiece.

1.5mm

Central tooth

Side view


Setting the ThrowFor a right-handed shearer you will first position the cutter as far right as the throw will allow.

For a left-handed shearer you will first position the cutter as far left as the throw will allow.

Secondly, adjust the comb so that the outside edge of both the comb and cutter align.

Using your thumb on the drive cogs, move the cutter from side to side and ensure that the inner two teeth of the cutter both pass over the central tooth of the comb completely on each side.

LONGHORN

LONGHORN

Central tooth

Finally, firmly tighten the comb screws.

Ensuring that the cutter passes over the central tooth of the comb on both sides completely will result in a cleaner cut.


6


Setting the TensionTighten the tension knob by turning it clockwise until the drive cogs can just be turned with your thumb on the cogs.

Too little tension causes ‘feathering’ which compromises the quality of the cut.

Too much tension will cause the comb and cutter to overheat, resulting in your combs and cutters becoming blunt faster.

Comb and Cutter UsageNever tighten the tension when the comb or cutter starts to become blunt, this will damage your equipment. When your combs and cutters do start to go blunt, change them.

Once blunt, you should have your combs and cutters sharpened on a specialist grinder.

For professional shearers the recommended cutter to comb ratio is three cutters to one comb. We advise that general farm shearers can lower that ratio to 2:1.


7

ON

GH

OR

N


ON

GH

OR

N

LONGHORN OIL

LON

GH

OR

N

OIL

LONGHORN OIL

LONGHORN OIL

LONGHORN OIL

LONGHORN OIL

LONGHORN OIL

LONGHORN

OIL

TENSION PIN CUP

FULCRUM CUP & POST Drip oil down the barrel to reach the fulcrum cup & post. This should be done with no cutter attached to the handpiece.

OIL BATH The oil bath should be filled up at the start of shearing and checked every 2-3 hours.

CRANK ROLLER

COMB & CUTTER

FORKS

DRIVE COGS

BACK SPINDLEDrip oil down the ferrule to reach the back spindle.

GENERAL MAINTENANCE

8

Lubrication

Use Longhorn shearing oil to keep your handpiece well lubricated.

Before shearing commences you should prepare your handpiece by oiling every oil point indicated on the diagram below. We recommend oiling these points on every cutter change (approximately 20 minutes).


ON

GH

OR

N

LONGHORN OIL

LON

GH

OR

N

OIL

LONGHORN OIL

LONGHORN OIL

LONGHORN OIL

LONGHORN OIL

LONGHORN OIL

LONGHORN

OIL

TENSION PIN CUP

FULCRUM CUP & POST Drip oil down the barrel to reach the fulcrum cup & post. This should be done with no cutter attached to the handpiece.

OIL BATH The oil bath should be filled up at the start of shearing and checked every 2-3 hours.

CRANK ROLLER

COMB & CUTTER

FORKS

DRIVE COGS

BACK SPINDLEDrip oil down the ferrule to reach the back spindle.

GENERAL MAINTENANCE

9


Sliding sleeve

Greasing Points

We recommend that you grease the points indicated below before you commence shearing and to check your handpiece daily.

GENERAL MAINTENANCE

Pack the sliding sleeve with grease. To do this, remove thetension knob by twisting anti-clockwise. Lift the fork body, remove the sliding sleeve and pack the hollow area with grease. DO NOT grease inside the tension knob, this will cause the handpiece to vibrate andlose tension when shearing.

DO NOT grease the outside of the sliding sleeve, instead apply a small amount of shearing oil.

Remembering to disconnect your handpiece from the driveshaft, add a small amount of grease onto the drive cogs.

Grease the fork swivels by rotating the fork 90 degrees and pull away from the handpiece. Apply grease to both ends that go into the fork body.

Re-fit by reversing the procedure above.

10

Grease


Before attaching your handpiece to any driveshaft, double-check that the shearing machine you’re about to attach your handpiece to is switched off.

Locate the correct end of your driveshaft and push the back spindle of your handpiece onto the driveshaft firmly.

Lock the handpiece back on itself as shown in the illustration below when attaching it to the driveshaft.

For Pin Drive Handpieces

Rotate clockwise. Once you feel the handpiece locate into the bayonet, rotate another full turn.

For Worm Drive Handpieces

Rotate clockwise until the handpiece and driveshaft are tight together.

LONGHORN

ATTACHING HANDPIECE TO DRIVE

11


SUREGRIP - TECHNICAL DRAWING

12


SUREGRIP - PARTS LIST

1H

19-2

00Le

ft H

and

Fork

19H

19-2

18Sa

fety

Scr

ew

2H

19-2

01Ri

ght H

and

Fork

20H

19-2

19H

andl

e3

H19

-202

Fork

Ret

aini

ng S

prin

g21

H19

-220

Oil

Hol

e Sc

rew

& W

ashe

r4

H19

-203

Fork

Ret

aine

r Sc

rew

22H

19-2

21O

il H

ole

Was

her

5H

19-2

04Fu

lcru

m C

up23

H19

-222

Cran

k Ro

ller

6H

19-2

05Te

nsio

n Pi

n Cu

p24

H19

-223

Cran

k Sp

indl

e7

H19

-206

Tens

ion

Pin

Reta

inin

g Sp

ring

25H

19-2

24M

ain

Bush

8H

19-2

07Ba

re F

ork

Body

26H

19-2

25In

tern

al O

-Rin

g9

H19

-208

Com

plet

e Fo

rk B

ody

27H

19-2

26Ex

tern

al O

-Rin

g10

H19

-209

Com

b Sc

rew

(Knu

ckle

save

r)28

H19

-227

Back

End

Gua

rd11

H19

-210

Fulc

rum

Pos

t Nut

29H

19-2

28Jo

int S

prin

g12

H19

-211

Fulc

rum

Pos

t30

H19

-229

Join

t Cap

13H

19-2

12Th

read

ed B

ush

31H

19-2

30Ba

ck Jo

int S

hort

Hal

f14

H19

-213

Tens

ion

Circ

lip32

H19

-231

Cog

15H

19-2

14Te

nsio

n Pi

n33

H19

-232

Back

Join

t Lon

g H

alf

16H

19-2

15Sl

idin

g Sl

eeve

34H

19-2

33W

orm

Bac

k Sp

indl

e17

H19

-216

Tens

ion

Knob

35H

19-2

34Pi

n Ba

ck S

pind

le

18H

19-2

17Ru

bber

Bun

g36

H19

-235

Shor

t Spi

ndle

Pin

13


TROUBLESHOOTING

PROBLEM DIAGNOSIS SOLUTIONHandpiece not cutting correctly

Comb and cutter not set correctly in handpiece

Refer to set up page 4, 5 and 6

Comb and cutter incorrectly sharpened

Have your combs and cutters professionally sharpened

Not enough tension on comb and cutter

Re-set tension

No rise in sheep’s wool Leave sheep longer or select a different style of comb

Comb and cutter blunt Have combs and cutters professionally sharpened

Cutter not sitting in position

Forks worn (conical pins)

Replace forks. This is best done in pairs

Comb not staying in position

Comb screws are worn or not tightened properly

Replace comb screws

Forks falling out of fork body

Fork retaining spring broken

Have spring replaced

Handpiece not tensioning/comb and cutter losing tension

Tension pin and sliding sleeve worn

Replace pin and sleeve

Tension pin cup worn Replace cupTension lock ring damaged, worn or stuck

Replace tension lock ring

Handpiece vibrating excessively

Cup and post worn Have cup and post replaced and set by atrained technician

Fulcrum post loose

Drive spindle dry ‘red spot’

Remove back spindle and oil

14

Any repairs should only be made by a trained professional and should be carried out using genuine parts designed for this handpiece.


TROUBLESHOOTING

PROBLEM DIAGNOSIS SOLUTIONHandpiece heating up excessively front, middle or back end

Too much tension on comb and cutter

Replace comb and cutter/re-set tension and oil

No oil in oil bath. Fill up oil bath (see page 9)

Handpiece generally dry

Oil handpiece at the oil points (see page 8 & 9)

Comb and cutter blunt Have your combs and cutters professionally sharpened

Handpiece won’t drive/locked up

Drive pin worn/broken Have drive pin replaced

Worm back spindle worn

Replace back spindle

Wool under cogs Check back guard is present – remove cogs and wool then replace cogs

Handpiece noisy Back spindle dry May need polishing and oiling

Cogs worn Have cogs replacedHandpiece dry Oil handpiece at the oil

points (see page 8 & 9)Send handpiece for full service

Back joint guard perished

Have guard replaced

Joint spring loose and caps missing

Have joint spring and caps replaced

Fork body broken Handpiece accidentally damaged

Send handpiece for repair and full service

15

HORNER SHEARING • LANE SIDE • GRINDLETON ROAD • WEST BRADFORD • CLITHEROE • BB7 4QH • UK

Documents

INSTRUCTION BOOKLET - Horner Shearing Books/Suregrip... · 2018-07-27 · cogs can just be turned with your thumb on the cogs. Too little tension causes ‘feathering’ which compromises