Gravely 40 Manuel utilisateur

OPERATOR'S

MANUAL

NAME: 40" COMMERCIAL MOWER PART NUMBER(S): 11362 - 40" Commercial Drive

11368 - 40" Commercial Deck

40" COMMERCIAL MOWER ATTACHED TO C12 TRACTOR WITH DUAL WHEELS

GENERAL

1. The 40" Commercial Mower is a front mount unit

designed and built to give many years of excellent

service. The mower is recommended for rough

mowing conditions; has all gear drive from engine to

mower, heavy-duty steel deck, rugged skids and

casters, and 2 adjustable blades. The mower

attaches to both 2 and 4 wheel tractors (see

paragraph 3).

2. The Owners Manual includes the parts list, setting

up the mower, safety, operation, and maintenance

instructions. Use the parts list for reference to

individual part numbers. If further information is

necessary contact the local Gravely dealer.

3. Height: 15-1/2" Weight: 182 lbs.

Length: 34-3/4" Width: 42"

Cutting Width: 40"

Deck: Reinforced, welded steel.

Drive: Right angle bevel gear, tapered roller

bearings, cast iron housing, 2 self

adjusting spring tensioned V-belts.

Blades: 2 steel, hi-strength, hi-lift,

20-1/2" length, 3/16" thick

Features: Adjustable casters, adjustable swivel

action.

Purpose: Heavy mowing conditions.

Recommended for the following tractors:

7.6 - C10A - C12

424 - 430 - 432

810 - 812 - 814 - 816S

Required attaching kits:

7.6 - C10A - C12: None

424 - 430 - 432:

15840E1 Front Drive Kit

11601E1 Front Adapter Kit

810-812-814-816S:

19075E1 Front Drive Kit

11601E1 Front Adapter Kit

Recommended optional equipment for special

applications:

7.6 - C10A - C12: None

Riding Tractors:

20181E1 Wheel Brake Kit, 800 Series

11924E1 Front Wheel Weights

Recommend option for riding tractors without

hydraulics:

11271E1 Lift Assist Kit

ITEM

N0. PART N0. DESCRIPTION

1 11369A1 Deck Weldment

2 180126 Bolt, Hex 3/8-16 x 1-1/2

3 9231P1 Idler

4 11379A1 Arm, Idler Pivot Weldment

5 11382A1 Idler, Pivot Arm

6 456004 Nut, Lock 3/8-16 Washer Insert

7 11263P1 Spring

8 9200A1 Housing, Spindle Bearing Weldment

9 9246P1 Bearing, Cones

10 9245P1 Bearing, Race

11 9206P1 Seal, Oil

12 9204P1 Ring, Seal

13 9207P1 Pulley, Rotor

14 131001 Washer, Flat 31/32 x 2-1/4 x .165

15 17313P1 Nut, Lock Esna 7/8-9 Heavy Thin

16 9203P1 Shaft, Rotor

17 9213P1 Key, Square 1/4 x 1

18 9205P1 Shield, Dust

19 9211P1 Collar, Blade Spacer 3/4"

20 9210P1 Collar, Blade Spacer 1/2"

21 9209P1 Collar, Blade Spacer 1/4"

22 9212P1 Blade, Mower

23 102581 Screw, Set 5/16-18 x 3/8 Hex Socket

24 94110270 Fitting, Lube 1/4-28

25 120915 Bolt, 3/8-16 x 1 Rd. Hd. Sq. Nk.

26 456004 Nut, Lock 3/8-16 Washer Insert

27 11384P1 Cover, Belt

28 94286380 Bolt, 3/8-16 x 5/8 Hex Hd.

29 120382 Washer, Lock 3/8 Sp.

30 120394 Washer, Flat 13/32 x 13/16 x .065

31 9240P1 Belt, Drive

32 9223P2 Skid

33 181596 Bolt, 5/16-24 x 7/8 Hex Hd.

34 120214 Washer, Lock 5/16 Sp.

35 120393 Washer, Flat 11/32 x 13/16 x .065

36 11376A1 Support, Deck Weldment

37 18549P1 Decal, Danger

38 11375P1 Bearing, Bronze

39 94110270 Fitting, Lube 1/4-28

40 180122 Bolt, Hex 3/8-16 x 1

41 120897 Bolt, 1/2-13 x 3 Rd. Hd. Sq. Nk

42 120384 Washer, Lock 1/2 Spring

43 120378 Nut, Hex 1/2-13

NS 9251A1 Guard, Weldment

45 137204 Pin, Cotter 1/8 x 1-1/2

46 131017 Washer, Flat

47 11385A1 Caster Fork Weldment

48 113871`1 Bushing

49 11386P1 Wheel, Caster

50 180193 Bolt, Hex 1/2-13 x 3-3/4

51 435507 Nut, Lock 1/2-13 Washer Insert

Complete 40" Rotary Mower Spindles R.H. #10398A1 and L.H.

#10399A1 Include Item Numbers 8 through 21 and Numbers 23 and 24 ILLUSTRATED PARTS LIST Continued on Page 4

fig 1

ASSEMBLY

1. Unpack the drive and deck.

2. Remove the belt covers, fig 1, Items 27.

3. Mount the idlers on the studs as in fig 2. Note the

different sleeve lengths of the idlers. The short

sleeve goes next to the high rotor and the tall

sleeve goes next to the low rotor. Set the idlers

on the studs with the extended sleeves down.

Work from the rear of the mower.

4. Set the belts as in fig 3; low belt first. This belt

positioning is important for ease of assembly.

5. Hook the springs to the idler assembly from

underneath as in figs 2 & 4, solid lines.

6. Set the drive in position on the deck; do not bolt

it down. Slip the belts on the drive pulley and

then on the rotor pulleys. Let the idlers float at

this time; solid lines, fig 4.

7. Bolt the drive to the deck. The 2 carriage bolts

are inserted from under the deck, fig 1, Items 41,

42 & 43. Be sure that the heads seat properly in

the deck. The 3 hex bolts fasten from the top, fig

1, Items 29 & 40. Start all bolts and nuts before

tightening.

fig 4

8. Working from the sides, grip the springs with a spring

puller or clamp-lock pliers or equivalent. Extend the

spring hook up, over, and through the spring hole.

The belts are now in tensioned running position;

dotted lines fig 4.

9. Replace the belt covers.

10. Install the bushings in the caster wheels and

bolt the wheels in the caster forks.

LUBRICATION

1. Grease the spindle bearing weldment housing through

the grease fitting, with general purpose grease fig 1,

Item 8 & 24. Add grease until it comes out the vent

hole; opposite side of the grease fitting. Re-grease

every 8 HOURS of operation or more often when

operating in severe dust or sand.

2. Grease the bronze bearing and caster wheels through

the grease fittings with general purpose grease fig 1,

Items 38 & 49. Add grease until it comes out the

bearings. Re-grease periodically, especially when

operating in severe dust or sand.

ITEM

N0. PART N0. DESCRIPTION

1 181618 Bolt, Hex 5/16-24 x 1-3/4

2 13412P1 Nut, Lock Esna 5/8-18 Light Thin

3 12871P1 Spring

4 12867P1 Plate, Dog

5 12870P1 Washer, Friction

6 12869P1 Plate, Drive

7 12868P1 Plate, Back

8 18277P1 Nut, Lock Esna 5/16-24 Light Thin

9 13143P1 Bearing, Race

13144P1 Bearing, Cone

10 13122P1 Seal, Oil

11 12550P1 Retainer, Oil Seal

12 11815P1 Shaft, Housing

13 94110100 Fitting, Lube 1/8

14 435507 Nut, Lock 1/2-13 Washer Insert Hex

15 180193 Bolt, Hex 1/2-13 x 3-3/4

16 180122 Bolt, Hex 3/8-16 x 1

17 138542 Washer, Lock 3/8 Int Tooth

18 12023P1 Casting, Swivel

19 12566P1 Shaft, Drive

20 13145P1 Bearing, Roller Race

13146P1 Bearing, Roller Cone

21 12862P1 Gear, Bevel

22 120502 Key, Woodruff 3/16 x 7/8 Hard

23 13187P1 Ring, Retaining

24 14101P1 Shim, Gear .020

12490P1 Shim, Gear House .005

25 12491P1 Gasket

26 10499P1 Plug, Pipe 2 In. W/Filler Plug

27 9236P1 Housing, 42 In. Mower

28 103877 Plug, Pipe 1/8 In. Sq. Hd.

29 119120 Pin, Cotter 3/32 x 1-1/4

30 125384 Nut, Slotted 5/8-18 Hex Thick

31 12850P1 Gear, Bevel

32 9229P1 Bolt, Hex Special

33 12852P1 Shim, Gear

13646P1 Shim, Gear .010

34 13142P1 Bearing, Roller Cone

35 13139P1 Bearing, Roller Cone

36 13171P1 Seal, Oil (Dual Lip)

37 11363P1 Shaft, Drive Rotor

38 11366A1 Plate, Mounting Weldment

39 120384 Washer, Lock 1/2 Spring

40 120378 Nut, Hex 1/2-13

41 11364P1 Sheave, Drive

42 11365P1 Nut, Special

NS 10102A1 Attachment Clutch Assembly

ILLUSTRATED PARTS LIST (Cont.)

fig 5

3. Remove filler plug and level plug, fig 6 . Fill the

gear drive housing to the oil level plug with SAE

90 gear lubricant. Replace the plugs. Check the

level periodically especially if signs of leakage

are present.

4. Grease the swivel casting through the grease

fitting on the casting with general purpose

grease. Add grease until it comes out under the

swivel adjustment fig 6. Re-grease every 8

HOURS of operation.

2. 7.6, C10A, C12 TRACTORS:

The mower attaches to the front of the tractors

with 2 nuts and 2 bolts. Do not damage the

threaded studs, fig 7.

3. RIDING TRACTORS:

The mower attaches to the Front Adapter Kit with

2 nuts and 2 bolts. Do not damage the threaded

studs, fig 8.

DRIVE UNIT

INSTALLATION

1. Before attaching or detaching the mower,

STOP the engine, put the PTO control in the

"OUT" position.

SAFETY

1. REFER

to the tractor Owners Manual to

familiarize yourself with all controls before

operation.

2. DO NOT ALLOW PASSENGERS to accompany

operator at any time.

3. DO NOT ALLOW CHILDREN to operate

equipment, nor allow adults to operate it without

proper instruction.

4. INSPECT WORK AREA for rocks, glass, metal,

bones, and any other foreign objects. Stay alert

for holes and other hidden hazards.

5. USE EXTREME CAUTION when operating on

slopes.

6. REDUCE SPEED

on all side slopes and sharp

turns.

7. DO NOT OPERATE equipment except from

proper operator's position.

8. KEEP SAFETY

devices and shields in place at

all times.

9. DISENGAGE POWER

to attachment and stop

engine prior to making any adjustment or clearing

the unit.

10. DO NOT WEAR LOOSE fitting clothing.

11. KEEP HANDS, feet, hair, clothing, etc., away

from moving parts.

12. KEEP BYSTANDERS

and pets removed from the

work area.

13. EXERCISE CAUTION

to avoid slipping or falling,

especially when operating in reverse with two

wheel tractors.

14. DIRECT DISCHARGE

so as not to endanger life

or property; such as people, pets, structures,

cars, etc.

OPERATION

1. Refer to the tractors Owners Manual for safety

and operating instructions to engage and

disengage the PTO (power take-off).

2. Operate the engine at full speed. In thick, lush

growth reduce ground speed (not engine speed)

to allow the mower enough time to cut and

discharge.

REMOVAL FROM TRACTOR

1. Reverse the procedure for attaching; see

INSTALLATION, paragraphs 1 through 3.

ADJUSTM ENTS

1. SWIVEL ACTION: The swivel action is regulated

by the nut and bolt on the swivel casting, fig 5.

Loosening allows more action, tightening reduces

the action. The swivel action should allow the

mower to follow ground contour.

2. CASTERS: The caster wheels should be

adjusted (if necessary) after the mower is

attached to a tractor. Raise or lower the casters,

by use of the spacers, to make the mower level

with the ground, fig 6 , Item 46.

ROUTINE MAINTENANCE

1. Perform the lubrications as described in

LUBRICATION, paragraphs 1 through 4.

2. Check each rotor shaft nut to insure tightness fig

1 , Item 15. See ADJUSTMENTS, paragraph 6.

3. Check all nuts and bolts to insure tightness.

4. Sharpen and balance the blades.

5. Clear the mower of cuttings and debris.

fig 9

3. BLADE REMOVAL: STOP the engine, Put the

PTO in the OUT position. Put the operating levers

in NEUTRAL. BE SURE the blades have stopped.

Remove the mower from the tractor. Turn the

mower upside down. Hold the rotor shaft with a

3/8” socket drive and remove the nut with a

15367E1 Gravely Wrench or equivalent fig 9. Do

not use the top spindle nut to hold the spindle form

spinning

4. BLADE SHARPENING: Sharpen the blades.

Balance after sharpening.

5. CUTTING HEIGHT: Place the collars above and/or

below the blade for adjustment, fig 1, Items 19, 20,

21. Note that the collars are not the same

thickness. Keep the same combination on both

rotors.

6. BLADE INSTALLATION: Place the blade and

collars on the shaft at the desired cutting height.

Put the flat washer and nut on as in

7. BELT REMOVAL: Remove the belt covers.

Unhook one end of each spring; use a spring

puller or clamp-lock pliers. Remove the drive.

Remove the belts. See figs 2, 3, & 4. fig 1, Item

14 and 15. Hold the rotor shaft with a 3/8" socket

drive and torque the nut to 100 ft. lbs. Similar

tightness can be reached with a Gravely

11367E1 Wrench or any 16" length handle

wrench when used by an average man, fig 9.

8. BELT INSTALLATION: See ASSEMBLY

paragraphs 4, 6, 7, 8, and 9 .

9. Safety clutch action is regulated by the

attachment clutch assembly, fig 5, Items 1, 3, 4,

5, 6, 7 and 8. Loosen all 6 nuts, Items 8. Tighten

the 6 bolts all the way into the threaded back

plate, Items 1 & 7. Back off each bolt 1/2 turn.

Lock the bolts in position with the nuts

STORAGE

1. Perform all that applies from ROUTINE

MAINTENANCE and LUBRICATION.

2. Apply a light coat of oil to preserve finish and

appearance.

Ce manuel convient aux modèles suivants

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