Ocmis Irrigazione MR, Instructions For Use Manual

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Ocmis Irrigazione S.p.A. – INSTRUCTION AND WARNING MANUAL – Translation of Original Instructions
MUMR-R1.02 .EN - 31/07/2015
CHAPTER 7 - Maintenance
Removal of the wheels
The wheels may only be replaced by qualifi ed and authorised technical personnel.
•
Handle all parts with the utmost care.
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Do not place your hands, fi ngers and limbs between parts.
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Wear safety clothing and approved PPE such as goggles, gloves and safety shoes.
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Ensure the tyre is completely defl ated before starting removal.
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Place the machine on a fl at surface and block it with the parking brake.
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Place wedges under the wheels that remain in contact with the ground.
Before proceeding with any subsequent operation, completely defl ate the tyre, also removing the middle body of the valve for more complete and
safer air removal.
With the wheel to be replaced still in contact with the ground, partially loosen its fi xing screws or nuts.
Then lift the machine until the wheel is suffi ciently detached from the ground and secure the trolley by placing it on adequate and stable supports.
Proceed with full removal of the wheel's screws or nuts and extract it from the hub.
7.4.2.6 WHEEL RIMS
Fitting the rims
Upon fi tting check integrity and conformity of the components used:
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Do not use or repair damaged or warped wheels.
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Do not repair rims or discs by welding.
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Replace faulty elements with others of the same type, profi le and size.
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Clean all coupling surfaces and protect them from rust.
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Use a rubber mallet to assemble the parts.
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Spread a solution of soap in water or specifi c grease for tyre fi tting on the rim groove and on the base of the tyre.
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Never use petroleum based lubricants or antifreeze.
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Ensure the rim is of suitable size for the wheel.
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Lubricate the parts of the wheel in contact with the heel and the inner tube.
Removing rims from the wheels
Prior to starting disassembly of a wheel of the vehicle, ensure the tyre is completely removed and ensure the tyre casing and/or rim are not damaged.
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Remove the nuts fastening the two parts of the rim.
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Loosen the heel of the tyre from the side fl ange.
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Remove the rim from the wheel.
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Remove the inner tube.
7.4.2.7 SCREW TIGHTENING TORQUES
During maintenance procedures it is often required to tighten steel screws of varying types and sizes with a torque wrench.
The following tables show the maximum tightening torque to be used according to the resistance of the material and screw size.
TIGHTENING TORQUES FOR STEEL SCREWS WITH ISO THREAD
Maximum tightening torques for metric screws with friction coeffi cient 0.14
Ø
SCREW
HEXAGON
new ► 6.8 8.8 10.9 12.9
old ► 6S 8G 10K 12K
ø screw hexagon Pitch Pitch Pitch Pitch Pitch
coarse fi ne coarse fi ne coarse fi ne coarse fi ne coarse fi ne
mm mm mm Nm Nm Nm Nm Nm Nm Nm Nm
M6 10 1 - 7.8 - 10 - 15 - 18 -
M8 13 1.25 1 19 20 25 27 35 38 42 46
M10 17 1.5 1.25 37 39 50 53 70 74 84 89
M12 19 1.75 1.5 36 67 85 89 119 125 143 150
M14 22 2 1.5 101 111 135 148 190 208 228 250
M16 24 2 1.5 159 170 212 226 298 318 357 382
M18 27 2.5 2 218 233 290 310 402 436 490 523
M20 30 2.5 2 310 327 413 436 580 614 697 736
M22 34 2.5 2 426 448 568 597 798 840 958 1008
M24 36 3 2 535 586 714 781 1004 1098 1204 1317
M27 41 3 2 788 855 1050 1139 1477 1602 1772 1923
M30 46 4 2 1072 1193 1429 1590 2009 2236 2411 2648
M33 50 3.5 2 1456 1602 1941 2136 2729 3004 3275 3605
M36 55 4 3 1873 1989 2497 2652 3511 3730 4213 4476
M39 60 4 3 2431 2573 3242 3430 4559 4824 5471 5789
- The torque settings shown in the table correspond to 80% of the yield point
- For self-locking nuts or ring nuts the torque setting shall be increased by 15% .
- The settings shown are indicative