background image

- 19 - 

- 19 - 

11

10

9

8

10

ØA

ØB

ØC1

ØC2

ØD1

ØD2

ØE(*) ØF1

ØF2

G

13

÷

13,01

13,025

÷

13,037

40,13

÷

40,145

35,13

÷

35,145

40

÷

40,025

35

÷

35,025

7

÷

7,01

6,96

÷

6,97

6,945

÷

6,995

0,8

÷

1

CHECKS AND OVERHAUL

Head

Parts indicated in fig. 8.

1.

 Nut - 

2.

 Nut with ball - 

3.

 Rocker arm - 

4.

 Cotters - 

5.

 Rocker 

arm stud - 

6.

 Upper cap - 

7.

 Spring - 

8.

 Air-relief valve - 

9.

 Lower 

cap - 

10.

 Valve guide - 

11.

 Rocker arm cover - 

12.

 Head - 

13.

 

Valve housing - 

14.

 Exhaust valve - 

15.

 Intake valve - 

16.

 Rocker 

arm rod - 

17.

 Camshaft - 

18.

 Tappets.

The head is made of aluminium with valve guides and housings 

in faced cast iron. Remove any carbon deposits from the head 

and check the cylinder bearing surface. Level it off to a depth of 

no more than 0.3 mm if deformed.

The  head  must  not  be  cracked  or  deformed.  If  such  faults  are 

discovered,  replace  the  part  after  consulting  the  spare  parts 

catalogue.

Do  not  demount  the  head  when  hot  to  avoid 

deformations.

Valves - Guides - Housings

Clean the valves with a metal brush and replace them if the tops 

are deformed, cracked or worn (fig. 9).

1 = intake

2 = exhaust

(*) with guide mounted.  

measurements in mm

Check  the  dimensions  of  the  valve  stem  (fig.  10)  and  the  play 

between the guide and valve. Ream the guide to the dimensions

indicated  in  the  table.  Change  the  guide  and  valve  if  the  play 

exceeds 0.1 mm.

The  valve  housings  will  always  need  to  be  ground  when  new 

guides are mounted. Valve guides oversized on the outside by 

0.10 mm are available.

After the engine has been used for a lengthy period of time, valve

knocking in their housings at high temperatures will harden the 

housing tracks and make manual milling difficult to carry out.

When this happens, remove the hardened surface layer with a 

grinder at 45° (Fig. 11).

The  valve  retention  track  will  widen  when  the  valve  housing  is 

machined.  Final  adaptation  of  the  valve  in  the  housing  must 

be carried out by smearing fine grain lapping compound in the 

housing and turning the valve with a light pressure and with an 

alternate movement until the surfaces bed perfectly (fig. 12).

Comply with the valve embedding values as indicated in the table

(

G

, fig. 9).

Warning:  when  the  valve  embedding  values  are  lower 

than those prescribed, the valves could interfere with the 

piston.

Workshop Manual KD500 _ cod. ED0053029390 - 

1° ed

_rev. 

00

Содержание KD 500

Страница 1: ...KD 500 WORKSHOP MANUAL...

Страница 2: ...ual assumes the following 1 The person or people performing service work on KOHLER series engines is properly trained and equipped to safely and professionally perform the subject operation 2 The pers...

Страница 3: ...for the time period listed below provided there has been no abuse neglect or improper maintenance of your engine Your emission control system may include parts such as the fuel injection system and th...

Страница 4: ...TERISTICS POWER TORQUE AND SPECIFIC FUEL CONSUMPTION CURVES 12 OVERALL DIMENSIONS 13 SPECIAL TOOLS 14 MAINTENANCE RECOMMENDED OIL TYPE REFILLING 15 MAINTENANCE 15 FUEL 15 RECOMMENDED OIL 16 ACEA SEQUE...

Страница 5: ...ft assembly 33 Connecting rod drive shaft connection 33 Counter shaft 33 Camshaft 34 Play adjustment 34 Crankshaft float 34 Camshaft float 34 Counter shaft float optional 35 Cover on timing system sid...

Страница 6: ...6 Index Workshop Manual KD500 _ cod ED0053029390 1 ed_rev 00...

Страница 7: ...livery valve Wrong injector setting Excessive plunger blow by Jammed injection pump delivery control Wrong injection pump setting Oil level too high Jammed pressure relief valve Worn oil pump Air insi...

Страница 8: ...ldings or other machines SAFETY REGULATIONS Children and animals must be kept at a sufficient distance from the machine to prevent any danger resulting from its operation Fuel is flammable so the tank...

Страница 9: ...g order to limit environmental and noise pollution When discontinuing use of the engine select all components according to their chemical characteristics and dispose of them separately Some phases may...

Страница 10: ...tly on the engine It contains the following information A Manufacturer s identity B Engine type C Engine serial number D Maximum operating speed E Number of the customer version form K F Approval data...

Страница 11: ...PTO ratio Camshaft PTO ratio Crankshaft main PTO rotation Camshaft main PTO rotation Max torque Fuel consumption max torque Oil consumption Capacity of standard oil sump Recommended battery 12V in st...

Страница 12: ...ith constant speed and constant load MN Torque at N power MB Torque at NB power MA Torque at NA power C Specific fuel consumption at NB power The above power values refer to an engine fitted with air...

Страница 13: ...IRECTION OF ROTATION OPTIONAL P T O ON CAMSHAFT WITH CLOCKWISE DIRECTION OF ROTATION GRAVITY CENTER OF THE ENGINE AUXILIARY P T O FOR HYDRAULIC PUMPS Workshop Manual KD500 _ cod ED0053029390 1 ed_rev...

Страница 14: ...LS Failure Flywheel puller Tool to mount and demount main bearings Plug to mount and demount main bearings Sleeve to insert main bearings Piston mounting tool Crankshaft gear puller Punch to insert By...

Страница 15: ...face well away from the plug to prevent harmful vapours from being inhaled Dispose of fuel in the correct way and do not litter as it is highly polluting FUEL When refuelling it is advisable to use a...

Страница 16: ...er the bearings and all moving parts increases if oil whose characteristics differ from the recommended type is used or if the oil is not regularly changed All this notably reduces engine life Oil vis...

Страница 17: ...be removed when the stop lever has been turned to the stop position To do this the pump must be pressed towards the housing as shown in fig 2 Flywheel extraction Remove the fuel tank the air conveyor...

Страница 18: ...aring on the cover on the timing system side use tool code 00365R0900 with plug code 00366R0220 and sleeve code 00366R0230 side B fig 7 During the assembly operations make sure that the bearing holes...

Страница 19: ...with guide mounted measurements in mm Check the dimensions of the valve stem fig 10 and the play between the guide and valve Ream the guide to the dimensions indicated in the table Change the guide a...

Страница 20: ...Make sure that there are no evident signs of wear on the contacting surfaces Replace the parts if necessary Cylinder In special cast iron with integral liner Use a bore gauge to check the two interna...

Страница 21: ...roximately 11 mm 86 915 86 835 Check the play between cylinder and piston Replace the parts if play exceeds 0 150 mm Play between pin and piston mm Piston ring Max wear mm 1st Compression 2nd Compress...

Страница 22: ...e Undersized bearings can be mounted without any reaming work required WARNING do not remove material from the main journal shims during the grinding operation as this would alter crankshaft float Als...

Страница 23: ...oil pump recess in relation to the surface of the timing system cover fig 25 is between Camshaft Make sure that the cams and bearing pins are not scored or worn Check the dimensions as indicated in fi...

Страница 24: ...0 1 mm fig 29 Coupling play between the tappet and relative housing in the crankcase Fuel pump optional Check the projection of the AC pump rod in relation to the engine casing surface with the cansh...

Страница 25: ...pipe 3 Fuel filter 4 Injection pump 5 Fuel return pipe 6 Injector 7 Injection pipe 8 Fuel pipe Injection pump Illustration in fig 31 1 Delivery union 2 Filler 3 Valve spring 4 Delivery valve 5 Washers...

Страница 26: ...7 sec Injection pump calibration fig 34 When the adjuster sleeve is 10 5 mm from the stop position and the pump spins at 1 500 rpm the amount of fuel for 1 000 deliveries must be between 25 5 29 cc Re...

Страница 27: ...ilter 2 Fuel inlet union 3 Fuel return union 4 Nozzle holder 5 Calibration washer 6 Spring 7 Pressure rod 8 Spacer 9 Nozzle 10 Ring nut Injector inspection and calibration 1 Clean the nozzle holes wit...

Страница 28: ...ormed or excessively rough The nozzle body must not show signs of wear or damage The holes must be free from carbon residues 2 Smoothness test the nozzle needle which will have been previously immerse...

Страница 29: ...he regulator and alternator are correct and in good conditions 2 detach the wire from the remote control switch from the terminal and fit on a d c amperometer A fig 43 3 connect a d c voltmeter to the...

Страница 30: ...than this it means that the rotor is demagnetized and that the alternator must be replaced Warning 1 the alternator does not deliver current when the yellow cables are isolated 2 the alternator burns...

Страница 31: ...1 Fit on the oil drain plugs without tightening them too much max 2 Kgm to prevent damage to the threads 2 Mount the main bearing as indicated at page 18 3 Fit the benzing ring on to the pin of the r...

Страница 32: ...ass valve using tool code 00366R0210 fig 54 mount the by pass check screw with Loctite 648 mount the bypass valve inspection plug on the outside of the cover on the timing system side 5 Fit the retain...

Страница 33: ...48 and after having inserted the needle bearing and the second shimming washer Connecting rod drive shaft connection After having fitted the bearings into the small end connect the connecting rod to t...

Страница 34: ...red Place a calibrated bar on the cover of the timing system on a level with the engine casing retention surface and use a thickness gauge to check the distance between the bearing ring and bar fig 62...

Страница 35: ...e timing system cover fig 65 Place the cover on the casing Insert the cover fixing screws making sure that the five shorter ones 40 mm are mounted in the top part of the cover Tighten to the following...

Страница 36: ...the lower side of the cylinder The operation is simplified by using a normal ring mounting tool code 00365R0770 as indicated in fig 70 Move the piston to TDC top dead center and check that the mark s...

Страница 37: ...lead is accurately adjusted it is advisable to define the shims to insert under the pump by measuring the dimension between the pump bearing surface and the tappet Proceed in the following way 1 turn...

Страница 38: ...e by tightening the nut that holds the relative bracket Match the marks made during the demounting phase see section Removing the injection pump page 17 Warning consult section Braked engine test page...

Страница 39: ...blems slowness or misfiring if the injection pump is changed Correct these faults by turning the pump casing a few degrees in relation to the engine casing following the directions indicated in fig 80...

Страница 40: ...ase all unpainted parts Loosen belt Wrap the engine in a plastic film Store in a dry place if possible not directly on the soil and far from high voltage electric lines Permanent protection over 6 mon...

Страница 41: ...HARTS Adjustments Camshaft float Countershaft float Crankshaft float Connecting rod float Valve clearance hot cold Valve recessing Injector projection Piston projection Couplings Camshaft and plugs Co...

Страница 42: ...0 72 1 23 2 02 3 02 3 88 5 36 9 09 13 80 21 00 26 30 36 60 44 40 56 90 4 x 0 70 5 x 0 80 6 x 1 00 7 x 1 00 8 x 1 25 9 x 1 25 10 x 1 50 13 x 1 75 14 x 2 00 16 x 2 00 18 x 2 50 20 x 2 50 22 x 2 50 24 x...

Страница 43: ...ises by the values indicated in the following table in relation to TDC dimension h fig 2 8 Remove the injection tube and mount the capillary tube code 00365R0940 on the injection pump delivery fitting...

Страница 44: ...SERVICE INFORMATION IN U S AND CANADA CALL 1 800 544 2444 KohlerEngines com FORM NO ED0053029390 ISSUED 04 07 2012 REVISED 00 DATE 04 07 2012 Translated from the original manual in Italian language Da...

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